Top 6 Best Rv Cassette Toilet

Compact and Portable The toilet is designed according to the size of an adult but is still compact enough to take it anywhere you need to go. It measures 16.2 long x 13.8 wide x 16.2 high.. Sturdy and Reliable The toilet's strong, sturdy structure is made with high-density PE plastic making it durable and reliable for consistent reuse. Both sides of the interlocking toilet components are load-bearing designs, ensuring that the two tanks are firmly interlocked together.. Leak-Proof Design Both reservoirs have integrated molding without any seams and will never leak. The sliding valve is double-layer sealed to prevent leakage and smelly odor emissions. It is designed with a flush pump and upgraded dual water outlets that make bowl rinsing and cleaning easier to avoid embarrassing bowl stains.. Easy to Clean The separate portable structure is easy to clean. Rinsing with water will not reflow. The toilet has a large 5.3-gallon capacity sewage storage tank, and the 2.5-gallon capacity fresh water allows you to flush over 40 times.. Convenient and Easy to Carry The included toilet storage and carrying bag makes it easy and convenient to take it anywhere The toilet is suitable for indoor and outdoor leisure activities like road trips traveling in an RV, or using it while camping, boating, fishing, or anywhere you need to do your dirty business..

THE ULTIMATE PORTABLE TOILET No More Emergency Potty Runs While Camping, Boating or Traveling on the Road Compact, Fully Functional Latrine Provides Anytime, Anywhere Bathroom Relief with All the Comforts of a Real Home Toilet. AMAZING 50 FLUSH CAPACITY Built-In Piston Pump Flusher Provides Powerful Cleaning Action, No Plumbing or External Hookups Required Features Extra Large 5.3 Gallon Waste Tank 3.2 Gallon Water Tank for Fewer Emptying Trips. SUPER COMFORTABLE SETUP Unit is Made of Durable, Heavy Duty Material That Naturally Minimizes Odors Resists Rust Corrosion Lightweight Yet Sturdy Seat Supports the Entire Family Including Toddlers, Kids, Teenagers, Adults the Elderly. EASY CLEAN CONVENIENCE Sprayer Keeps Bowl Clean a Full 360, While the Rotating Spout Lets You Safely Hygienically Dispose of Contents When Full Includes Waste Level Indicator Anti-Leak Drain Valve to Lock In Liquid Odors. TRAVEL-FRIENDLY. ECO-FRIENDLY. Complete Kit Also Features a Handy Case for Toting Storing Your Toilet Anywhere Green System Saves You Money on Energy Water Cuts Out Wasteful Disposable Liners, Inserts, Pills Chemicals. OUTDOOR GIFTING REDEFINED Alpcour Portable Toilet, An ingenious gift for RV enthusiasts, campers, boaters, and adventurers from sons to daughters, dads to grandmas. Make Christmas, Father's Day, or Mother's Day extra special for that brother, MIL, or even the family member who seemingly has everything.. CLEAN HYGIENIC ON-THE-GO This compact indoor outdoor commode is the perfect present for mums, dads, grandkids, or girlfriends looking for unique camping conveniences. Whether it's Xmas or just because, offer the gift of comfort and hygiene to parents, grandsons, and granddaughters alike..

HIGH-QUALITY MATERIAL Our portable toilet is made of high-density HDPE and PP material in precise molded process with strong structure and great durability Its maximum load of 441 lbs can meet peoples needs, including toddlers, kids, teenagers, adults trucker and the elderly. INTEGRATED DESIGN The compost toilet is integrated design like a household toilet, giving you the comfort of home You can easily pull the tank from the bottom to pour sewage The rotating pouring spout allows you to empty it quickly without splashing It has a slide valve on the toilet for closing the waste to prevent against leakage and peculiar smell when not in use. LARGE CAPACITY LEVEL INDICATOR The portable travel toilet has a 4.5 gallon 17L freshwater tank There is also an external connection pipe design and 6.3 gallon 24L waste-water holding tank, which ensures the portable toilet for camping can be used for multiple times The level indicator design let you know when it's time to empty the waste water tank, more convenient for you. T-TYPE WATER OUTLETS HANDLE FLUSH PUMP The RV toilet is T-type water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump design allows you to operate more effortlessly to pressurize and flush the toilet. MULTI-PURPOSE USE The portable potty is a necessary for camping or travelling without taking up too much room, it can be used for outdoor and camping activities, car, RVs, boats, mobile home use, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

RECYCLING WORKING The hand washing station provides 4.5 gallon fresh water for washing hands, food or dishes. Then the used water can flow into the fresh water tank of the rv toilet to flush the waste. The combination design can maximize water utilization to be friendly to the environment.. PORTABLE CAMPING SINKThe portable handwashing station can make you feel as convenient as in a real bathroom or kitchen, when you are outdoors. Just need to step on the hands-free foot pump to get continuous water, wash hands with the liquid of soap dispenser, finally hang the towel on the rack.. COMPOSTING TOILET The T-type water outlet of portable toilet can effectively flush the bowl. And the rotating pour spout can help you dump the waste quickly without splashing. The humanized level indicator can remind you to empty the waste tank, when it turns red, which means full-tank waste.. SAFE LEAK-PROOF The camping wash basin and porta potty are both made of high-density HDPE material, which is safe to wash items and anti-leakage to prevent the nasty odors of waste. Strong structure and durable materials for long-term use.. EASY TO INSTALL For its detachable and compact design, the outdoor sink can be set up by yourself in minutes without needing additional tools. The detailed user guide can help you accelerate the process very much. While the camping toilet needs no installation..

LARGE CAPACITY HIGH LOAD CAPACITY The camping toilet has a 5.28 gallon 20 L freshwater holding tank and 6.34 gallon 24 L waste-water holding tank, which ensures the camping toilets portable can be used for multiple times Its maximum load of RV toilet with 331 lbs can meet peoples needs, including toddlers, kids, teenagers, adults, trucker and the elderly. EFFICIENT CLEANING DESIGN The portable toilet for camping is double water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump allows you to operate more effortlessly to pressurize and flush the travel toilet. PAPER AND DETERGENT COLLECTION DESIGN The portable toilet is cleverly designed with the paper collection and detergent compartment on clean water tank, which is convenient for you to place paper towels, no need for additional paper towel holders and avoid the embarrassment of forgetting to bring paper towels after use When you clean tanks, the cleaner stored in the detergent compartment comes in handy. ODORLESS CONVENIENT The rotating pouring spout of cassette toilet allows you to empty it quickly without splashing It has a slide valve on the compost toilets for closing the waste to prevent leakage and peculiar smell when not in use More convenient to disassemble for just pressing the tank button and easy to carry due to its handle design on tanks. MULTI-PURPOSE USE The porta potty is a necessary for camping or traveling without taking up too much room, which it can be used for outdoor and camping activities, car, caravan, RVs, boats, mobile home use, hospital, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

GREAT OUTDOOR PARTNER If you are an outdoor enthusiast crazy about camping, hiking, boating or any other recreational activities, our outdoor portable toilet is a great partner for you to answer natures call whenever and enjoy a worry-free travel. LARGE CAPACITY REPEATED USE The portable travel toilet has a 3.2 gallon 12L freshwater holding tank and 5.3 gallon 20L waste-water holding tank, which ensures the portable toilet for camping can be used for multiple times before it has to be cleaned, saving your time. DOUBLE WATER OUTLETS HANDLE FLUSH PUMP The RV toilet is designed with upgraded dual outlets water spout, which makes more effectively and comprehensively clean the stains on the dead corners without battery power or external plumbing And the handle pump design allows you to operate more effortlessly to pressurize and flush the toilet. MULTI-PURPOSE USE The portable potty is a necessary for camping or travelling without taking up too much room, it can be used for outdoor and camping activities, car, RVs, boats, mobile home use, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc. DETACHABLE STABLE The camper toilets can be detached by the two side latches to pour sewage, it also tightly fixes the lower part solidly to keep you stable when you are using It has a slide valve on the toilet for closing the waste to prevent against leakage and peculiar smell when not in use.

HIGH LOAD CAPACITY Our portable toilet is made of high-density HDPE and PP material in precise molded process with strong structure and great durability Its maximum load of RV toilet with 441 lbs can meet peoples needs, including toddlers, kids, teenagers, adults, trucker and the elderly. LARGE CAPACITY WITH LEVEL INDICATOR The camping toilet has a 2.64 gallon 10 L freshwater holding tank and 5.28 gallon 20 L waste-water holding tank, which ensures the camping toilets portable can be used for multiple times The level indicator design let you know when it's time to empty the waste water tank, more convenient for you. EFFICIENT CLEANING DESIGN WITH SPRAYER GUN The portable toilet for camping is T-type water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump allows you to operate more effortlessly to pressurize and flush the travel toilet Also equipped with a sprayer gun to clean up any parts of the internal bowl of this portable flush toilet. ODORLESS CONVENIENT The portable flush toilet has a slide valve on the compost toilets for closing the waste to prevent leakage and peculiar smell when not in use It is easy to detached by the two side latches and more convenient to carry due to its handle on tanks and comes with a 600D oxford carry bag. MULTI-PURPOSE USE The porta potty is a necessary for camping or traveling without taking up too much room, which it can be used for outdoor and camping activities, car, caravan, RVs, boats, mobile home use, hospital, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

HIGH LOAD CAPACITY The portable toilet is made of high-density HDPE and PP material in precise molded process with strong structure and great durability Its maximum load of RV toilet with 441 lbs can meet peoples needs, including toddlers, kids, teenagers, adults, trucker and the elderly. LARGE CAPACITY WITH LEVEL INDICATOR The camping toilet has a 3.2 gallon 12 L freshwater holding tank and 5.8 gallon 22 L waste-water holding tank, which ensures the camping toilets portable can be used for multiple times up to 110-120 flushes The level indicator design let you know when it's time to empty the waste water tank, more convenient for you. EFFICIENT CLEANING DESIGN WITH SPRAYER GUN The portable toilet for camping is T-type water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump allows you to operate more effortlessly to pressurize and flush the travel toilet Also equipped with a sprayer gun to clean up any parts of the internal bowl of this portable flush toilet. ODORLESS CONVENIENT The rotating pouring spout of cassette toilet allows you to empty it quickly without splashing It has a slide valve on the compost toilets for closing the waste to prevent leakage and peculiar smell when not in use and More convenient to carry due to its handle on tanks and comes with a 600D oxford carry bag. MULTI-PURPOSE USE The porta potty is a necessary for camping or traveling without taking up too much room, which it can be used for outdoor and camping activities, car, caravan, RVs, boats, mobile home use, hospital, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

EFFORTLESS FOOT PEDAL Just slightly step on the pedal to add some water, while stepping on the pedal to the floor to flush and clean the bowl completely. No electricity is needed. After using, the slide valve of cassette toilet can prevent against the leakage and nasty odors.When installing, Please must use glass glue on the bottom edge of the toilet for airtight reinforcement to effectively prevent the leakage problem.. EFFECTIVE T-TYPE WATER OUTLET The T-type design can provide dispersed flushing coverage to clean the bowl more thoroughly and comprehensively. Only 0.05L fresh water needed can clean the whole bowl. The water-saving design can reduce water consumption a lot.. HOME-LIKE STYLE The dry flush toilet seat is full-size residential seat, offering you a comfortable feeling of a real household toilet in use. Easily open the lid before you use and flexibly close it when not in use. The elegant profile can offer you a delightful visual experience.. PREMIUM MATERIAL EASY INSTALLATION The camper toilet is made of premium PP and HDPE with durable and strong construction. It can bear up to 551 lbs to meet peoples needs. According to the detailed instructionDistance from the center of the bolt holes to the back wall about 7.09 inches , you can assemble the camping toilet porcelain by yourself in minutes.. IDEAL FOR RV TRAVEL The gravity trailer rv toilet features home-like comfort and easy maneuver. This composting toilet can help you solve the sanitary problems when you take part in travelling, camping, outside working or for urgent use..

HIGH QUALITY MATERIAL Our portable toilet is made of high density HDPE and PP material in precise molded process with strong structure and great durability Its maximum load of 441 lbs can meet peoples needs, including toddlers, kids, teenagers, adults trucker and the elderly. LARGE CAPACITY The portable travel toilet has a 2.6 gallon 10 L freshwater holding tank and 3.96 gallon 15 L waste water holding tank, which ensures the portable toilet for camping can be used for multiple times. T TYPE WATER OUTLETS HANDLE FLUSH PUMP The RV toilet is T type water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump design allows you to operate more effortlessly to pressurize and portable toilet flushing. DETACHABLE ROTATABLE The composting toilet can be detached by the two side latches to pour sewage and The rotating pouring spout allows you to empty it quickly without splashing It has a slide valve on the compost toilets for closing the waste to prevent against leakage and peculiar smell when not in use. MULTI PURPOSE USE The portable potty is a necessary for camping or traveling without taking up too much room, it can be used for outdoor and camping activities, car, RVs, boats, mobile home use, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

HIGH QUALITY MATERIAL Our portable toilet is made of high density PE and ABS material in precise molded process with strong structure and great durability Its maximum load of 275 lbs can meet peoples needs, including toddlers, kids, teenagers, adults trucker and the elderly. LARGE CAPACITY REPEATED USE The portable travel toilet has a 3.2 gallon 12L freshwater holding tank and 2.6 gallon 10L waste water holding tank, which ensures the portable toilet for camping can be used for multiple times before it has to be cleaned, saving your time. DOUBLE WATER OUTLETS HANDLE FLUSH PUMP The RV toilet is designed with upgraded dual outlets water spout, which makes more effectively and comprehensively clean the stains on the dead corners without battery power or external plumbing And the handle pump design allows you to operate more effortlessly to pressurize and flush the toilet. MULTI PURPOSE USE The portable potty is a necessary for camping or travelling without taking up too much room, it can be used for outdoor and camping activities, car, RVs, boats, mobile home use, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc. DETACHABLE STABLE The camper toilets can be detached by the two side latches to pour sewage, it also tightly fixes the lower part solidly to keep you stable when you are using It has a slide valve on the toilet for closing the waste to prevent against leakage and peculiar smell when not in use.

BOXIO - Toilet 100 CONVENIENT CAMP TOILET - BOXIO TOILET Includes 1x black box 15.75 x 11.81 x 11.0 inch with 1xlid, 1xurine diverter, 1x Collection container 1,32 gallons with 1x lid, 1x BOXIO CANISTER 1,32 gallons, 2x Screw cap 1x waterproof, 1x with membrane.. COMPACT AND PORTABLE - Take your bathroom with you wherever you go Our portable potty for adults and children is easy to pack and transport allowing you to find it's place wherever you need.. SAFE AND PERSONAL - No more worrying about using public restrooms. Our portable toilet for camping provides a safe and personal experience whether you're out in the wilderness or glamping.. CONVENIENT DISPOSAL - Our portable toilets for adults and kids are designed for easy disposal without the need for chemicals or special disposal treatments. No mess, no fuss They also have no-odor, when used with the Plug and the Hemp, providing a comfortable and clean experience for all.. MULTI-PURPOSE USE - Not only does our portable toilet for adults provide a convenient bathroom solution, since it does not look like a toilet you can also use it as a seat when not in use..

CAMPING HAND WASHING STATION - BOXIO Wash outdoor sink station with hose hook up is the go to sink solution for any campers. You can use it to wash your hands, brush your teeth, clean your food, wash your dishes, wherever you want.. COMPACT AND PORTABLE - BOXIO Wash hand washing station is designed to be conveniently portable. Its compact design allows for easy storage and transport on camping trips or any outdoor tripgathering in general.. RECYCLED PLASTIC MATERIAL - Unique design made with recycled materials for an eco-concious option. Enjoy the marvel of nature with this stylish yet sustainable portable sink for camping.. NO INSTALLATION NECESSARY - No need for installation or any electric supply. Simply fill the separate canister with water and use the pump faucet for a mobile sink solution.. LIGHTWEIGHT FOR CONVENIENCE - Conveniently lightweight and easy to move around, this portable hand washing station is perfect for both solo campers and families on the go..

FULL-SIZED CONVENIENCE - This travel toilet is the answer for full bladders everywhere. With a full-sized lid, our porta potty is perfect for the comfort of adults and kids alike. No more holding it in for hours. 8-GALLON HOLD - You'll get a 3-gallon freshwater holding tank plus a 5-gallon waste water holding tank with this camp toilet that's up to 50-70 flushes. EASY TO USE - When your portable bathroom is ready to be refilled, just use the 2 labeled side latches. Each tank comes with a strong cap to ensure no leakage whatsoever.. WATERTIGHT SEAL - With our top-tier toilet tech, odor is a thing of the past. This portable camping toilet has a watertight seal that contains all odor and foul smells until it's ready for disposal.. ULTRA DURABLE - Made of high-density polyurethane, this camping and RV toilet can withstand extensive travel out on the open road. Use it time and time again on your next adventure.

HIGH-QUALITY MATERIAL Our portable toilet is made of high-density HDPE and PP material in precise molded process with strong structure and great durability Its maximum load of 441 lbs can meet peoples needs, including toddlers, kids, teenagers, adults trucker and the elderly. INTEGRATED DESIGN The compost toilets is integrated design like a household toilet, giving you the comfort of home You can easily pull the tank from the bottom to pour sewage The rotating pouring spout allows you to empty it quickly without splashing It has a slide valve on the toilet for closing the waste to prevent against leakage and peculiar smell when not in use. LARGE CAPACITY LEVEL INDICATOR The portable travel toilet has a 4.5 gallon 17L freshwater tank and 6.3 gallon 24L waste-water holding tank, which ensures the portable toilet for camping can be used for multiple times The level indicator design let you know when it's time to empty the waste water tank, more convenient for you. T-TYPE WATER OUTLETS HANDLE FLUSH PUMP The RV toilet is T-type water outlets, which is more dispersed and more effectively and comprehensively cleans the stains on the dead corners And the handle pump design allows you to operate more effortlessly to pressurize and flush the toilet. MULTI-PURPOSE USE The portable potty is a necessary for camping or travelling without taking up too much room, it can be used for outdoor and camping activities, car, RVs, boats, mobile home use, trailer, marine, van, construction site places with inadequate sanitary facilities for field operations Also especially suitable for pregnant women, the elderly, patients, children, etc.

Portable waste tank. Rotating, no-splash pour spout. For use with C220 toilet from Thetford. Features handle and wheels for easy transportation. Fit type Universal Fit.

EASY TO CARRY CONVENIENT--Kohree portable toilet with small dimensions of 14.5 L x 16.5 W x 17 H which is enough to meet the size of an adult seat. Also, it can be assembled or disassembled anytime and anywhere, can be easily put in your car, or use the handle to carry it.. LARGE CAPACITY, UP TO 90 FLUSHES--Kohree camping toilet storage tank capacity, with 5.8 gallons of sewage storage capacity means you'll have to empty it less often and the 3.2-gallon fresh water capacity allows you to flush about 90 times and each water volume per pump is 0.031gal, it can meet all your outdoor activities needs. Also, it is equipped with a waste water tank level indication to let you know when it's time to empty. ODORLESS LEAK-PROOF DESIGN--Splash-free rotating pouring spout allows you to empty it quickly without splashing. High-density polyethylene material features an anti-leakage and odor sealant valve to lock liquid odors, keeping your living environment odorless and clean.. EASY TO CLEAN--Upgraded T-type full coverage water outlets design makes cleaning 360 and avoids the embarrassing problem of leaving stains in dead corners with a single pipe. Pressing flush by compressed air pressure will automatically compress and increase the water pressure to efficiently clean the inside of a toilet. Also equipped with a water gun to clean up any part of the inner wall of the toilet.. MULTI-SCENARIO USE--This portable toilet could be used in a home, caravan, trailer, or boat, and also could be used for camping, hospital, outdoor events, and so onTolerate Temperature -4F-122F. Kindly note Toilet is a personal hygiene product unless there is a quality problem, otherwise we will not accept returns or exchanges. We also warmly suggest our users clean the waste tank frequently for hygiene reasons.

Automotive Replacement Shocks. Package Weight 6.39 Pounds. Package Dimensions 13.88 L X 10.02 H X 12.46 W Inches. Product TypeAuto Accessory.

Dump Cap to suit Thetford toilets. Part number FBA16384-78. Package Dimensions 16.0 L x 3.6 H x 12.0 W centimetres.

CONVENIENT, COMPACT, AND PORTABLE The SereneLife portable toilet is small enough to fit in the trunk of your car but large enough to sit on comfortably. Its 16.5 x 14.6 x 17.1 L x W x H size means you can take it with you wherever you need to go, in a tent or on the road.. LARGE CAPACITY OF UP TO 130 FLUSHES Our extra-large tank of 5.8 gallons holds more sewage than ever before, saving you the hassle of changing it often. Flush it up to 130 times with confidence the waste tank level indicator will let you know when to empty it.. LEAK-PROOF AND ODORLESS DESIGN To prevent unnecessary messes or spills, our design features a rotating emptying spout, allowing you to quickly and discreetly empty it when full. And it has a double-sealed drain valve to keep any nasty smells in.. STURDY AND EASY TO CLEAN This leak-proof cassette toilet for RV travel is crafted from high-density, premium quality polyethylene for a corrosion-resistant travel toilet. It is an easy-to-clean material that is highly durable, making it perfect for your adventures.. DO YOUR BUSINESS ANYWHERE Take our small, portable toilet anywhere you need to go. From camping, caravan, or trailer vacations with your family to boating trips with friends, use this portable bathroom both inside and outside with ease..

Dimensions toilet 17-12 x 16-12 x 15. Weight toilet Approximately 13lbs dry. Material Durable plastic composite. 12L Fresh water tank. 22L waste holding tank.

5Gallon 20L Gray. Adult sized seat and lid are sturdy, thick wall construction, strong enough to stand on Completely self contained, no external water or power connections required. Secure clamps and latches2 Side latches to lock both tanks together5gallon20 L capacitywaste holding tank empty easily, no tools required. Avoid direct sunlight and high temperatures Operation Open the fresh water holding tank, fill the tank with fresh water just below the neck mouth and then tighten the cap up Pull out slide valve before use. Depress bellows pump one or more times to rinse bowl after brush if necessary Close slide valve by pushing fully for next use Attention Elderly or young children, should be under the care of healthy people and adults to use..

Outdoor Toilet Ideal for camping, RV, boating, travelling, road trips and other recreational activities. It also can be used indoor, like home,hospital.Solve your personal hygiene problems anywhere.. Portable Toilet for Adults This rv camping toilet is very compact, fit in the trunk of your car, meanwhile it durable and large enough to allow an adult sitting on comfortably,Two tanks can be separeted through side latch, each tank have handle on the side for easy carry.. Easy to Flush Up to 30 Times the press pump design makes it easy to flush the toilet. 2.1 gallon clean water tank, about 30 times flush. 5.3 gallon waste tank helps times use and don't need to empty frequently.. Leak-proof Odorless Design portable toilet for camping has a double-sealed drain valve to lock any nasty smells.The locking lid helps stop spills. The side latches fasten the tank to the toilet. Sturdy Easy to CleanThis cassette toilet for RV travel is made of HDPE for a corrosion-resistant travel camping toilet. This material is easy to clean very durable, making it perfect for your adventures..

Award-Winning Portable Toilet for RVs, boats, trucks, vans, healthcare, camping and even off-the-grid lifestyle. Modern Appearance in a durable, easy-to-use and clean design, with removable seat and cover. 2. 6-gallon Waste Water Holding Tank with rotating Pour-Out Spout and 2. 6-gallon fresh water holding tank. Bellows Pump adds water to the bowl, sealed valve keeps odors in holding tank.