Mechanical Float Valve for Water Tanks of 2025
Best Choice1
WattsWatts ST750 Series 3/4" Bronze Standard Duty Float Valve, Male NPT Inlet & Outlet, Machined Flange, Serrated Arms, Replaceable Seals, Pivot Arm & Plunger Assembly, Max Working Temperature 180° F
Main highlights- STANDARD DUTY BRONZE FLOAT VALVE: The Watts Standard Duty Bronze Float Valve is a mechanical float valve that is used in applications where heavy duty isn't required, but protection and control of high water flow is still needed, such as in air conditioning, refrigeration, and irrigation systems.
- INNOVATIVE DESIGN: These float valves boast replaceable seals, 3/4" male NPT threaded inlet and outlet connections, a cotter pivot arm assembly that provides a stable pivot point for the float arm, and a plunger assembly with seals that controls the flow of water into the tank, ensuring a tight seal when closed.
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.
- EASY ADJUSTMENT: Equipped with serrated arms, these float valves allow for easy and precise adjustment of the water level, which ensures that you can maintain optimal water levels with minimal effort, enhancing the efficiency of your water management system. Additionally, this 3/4" valve can be conveniently tank wall-mounted.
- DURABLE CONSTRUCTION: Designed to withstand moderately rigorous conditions, the Watts Standard Duty Float Valve features a durable bronze body and high tensile manganese bronze long and short arms. It operates with a maximum working pressure of 125 psi (8.7 bar) and a maximum working temperature of 180° F (82° C).
9.7Exceptional
View offer on:
Show more
- Curious about how we select the top products for you? Explore How It Works
Value for Money2
MorningRoMorningRo 3 Pack Water Float Valve 1/2" to 3/4'' Auto Shut off Water Tank Float Valve 304 Stainless Steel Fully Automatic Level Control for Pool, Livestock Troughs
Main highlights- Wide Range of Applications: each package comes with 3 packs of automatic water level control floating valves, which are designed to maintain the water level in your water tanks, pools, water towers, water storage, livestock tanks and other containers; The automatic water level control valve need a water pressure better than 0.2 KG and a water pressure drop of more than 2 meters for the effect of automatic water stopping; The applicable water pressure range is 0.02-1.2MPA
- Universal Dimensions: 1/2" water tank float valve with side water intake turning head, 3/4" screw hole sleeved on an elbow for use with 3/4" water pipes, become 3/4" side water intake; It can also become 3/4" upper water intake, easily catering to a multitude of applications; The interface should be wrapped with a rubber ring to prevent loosening and leakage; A filter need be applied at the water inlet to prevent sand and stones from clogging the float
- Compact and Practical: automatic water level control valve is small and does not take up too much space, can effectively increase the water output, which is more than the traditional float valve; Practical for using, and simple installation; It has a long service life, has a low failure rate, and saves water resources; Regularly check if there are impurities inside the valve body causing water leakage; It cannot be applied without water pressure or in a state of overflow
- Automatic Water Level Control Float Valve: ensure optimal water levels effortlessly with our water float valve; The float valve does not need electricity; When the water level drops, the floating ball falls, and the water pressure in the water pipe is applied to open the plunger with the sealing silicone surface in the valve body, the valve body starts the water supply, when the water level rises, the floating ball floats, and the connecting rod drives the plunger, prevent water wastage
- 304 Stainless Steel Material: water level control float valve is made of 304 stainless steel, a highly durable, rustproof and corrosion resistant material, ensuring the safety of drinking water; With an exquisite appearance and durable hard housing, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem
9.6Exceptional
View offer on:
Show more
3
GOJUHANLINFloat Valve, 2 Pack 1/2" 3/4'' Auto Fill Shut off Water Tank Float Valve, 304 Stainless Steel Fully Automatic Water Level Control Valve, Float Valve for Water Tank(2 pcs)
Main highlights- WIDE RANGE OF APPLICATIONS: Float valve is suitable for water tank water towers/pools/pools/solar water tanks/water storage/livestock tanks, etc. It does not require electricity, and the pressure is greater than 0.2 kg for clean water to control the water level.Applicable temperature: 0℃-100℃
- UNIVERSAL DIMENSIONS:1/2"Water Tank Valve with Side water intake turning head,3/4 "screw hole sleeved on an elbow for use with 3/4 "water pipes become 3/4 " side water intake.It can also become 3/4 "upper water intake.It is necessary to wrap the interface with a rubber ring to prevent it from loosening and causing water leakage.A filter must be used at the water inlet to prevent sand and stones from blocking the floating ball
- SAFE AND DURABLE MATERIALS:304 stainless steel fully automatic water level control float valve is made of food grade material 304 stainless steel, ensuring the safety of drinking water. With an exquisite appearance and durable hard shell, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem.Not easy to rust
- NOTE: The automatic water level control valve must have a water pressure greater than 0.2KG and a water pressure drop of more than 2 meters to achieve the effect of automatic water stopping. It cannot be used without water pressure or in a state of overflow. The applicable water pressure range is 0.02-1.2MPA.Regularly check if there are impurities inside the valve body causing water leakage
- COMPACT AND CONVENIENT：Automatic water level control valve is small and does not take up space, and it is superior to the traditional process to effectively increase the water output, which is more than the traditional float valve. Practical for using, and simple installation. It has a long service life, has a low failure rate, and saves water resources
- AUTOMATIC WATER LEVEL CONTROL FLOAT VALVE：Our float valve No Need Electricity/No Manpower,When the water level in the water tower drops, the floating ball falls,the water pressure in the water pipe is used to open the plunger with the sealing silicone surface in the valve body,the valve body starts the water supply:when the water level in the water tower rises, the floating ball floats up, and the connecting rod drives the plunger.saving labor costs
9.4Excellent
View offer on:
Show more
4
Little GiantLittle Giant® Trough-O-Matic® | Stock Water Tank Float Valve | Watering Tank with Aluminum Housing and Expansion Brackets | Made in USA
9.3 Durability8.7 lasts a long time8.2 Easy to buildWhy we love it
Automatically refills based on water level.
Easy setup with standard garden hose connection.
Durable aluminum housing protects from damage.
9.1Excellent
View offer on:
Show more
5
Musibo2PCS Float Valve,1/2" to 3/4'' water level control float valve, 304 Stainless Steel Fully Automatic water shut off valve, Automatic Water Level Controller for Water Tank, Pool, Livestock Troughs.
Main highlights- WIDE RANGE OF APPLICATIONS: Float valve is suitable for water tank water towers, pools, solar water tanks, water storage, livestock tanks, etc. It does not require electricity, and the pressure is greater than 0.2 kg for clean water to control the water level. Applicable temperature: 0℃-100℃.
- UNIVERSAL DIMENSIONS: 2pcs 1/2" Water Tank Valve with 2pcs Side water intake turning head, 2pcs 3/4" screw hole sleeved on an elbow for use with 3/4 " water pipes become 3/4 " side water intake. It can also become 3/4 " upper water intake.Whether your 1/2'' or 3/4'' water pipe is used for upper water intake or Side water intake, it can be easily used. At the same time, the 1” inch float valve is suitable for most water pipes, so don't worry about the problem that the connection port cannot be installed.
- SAFE AND DURABLE MATERIALS: 304 stainless steel fully auto fill shut off water tank float valve is made of food grade material 304 stainless steel, ensuring the safety of drinking water. With an exquisite appearance and durable hard shell, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem. We use stainless steel as the valve body and use stainless steel screws, never rust, very safe.
- PRACTICAL AND EASY TO MAINTAIN: Automatic water level control valve is small and does not take up space, and it is superior to the traditional process to effectively increase the water output, which is more than the traditional float valve. Practical for using, and simple installation. It has a long service life, has a low failure rate, The floating valve is equipped with a filter, which must be used for the water inlet to avoid sand and gravel from blocking the floating ball.
- AUTOMATIC WATER LEVEL CONTROL DESIGN: The water level float valve has an ingenious design and multiple improvements, so that the automatic water level ball valve can control the water level you want without using electricity. When the water level in the water tower drops, the floating ball falls, the water pressure in the water pipe is used to open the plunger with the sealing silicone surface in the valve body, the valve body starts the water supply: when the water level in the water tower rise
8.9Very Good
View offer on:
Show more
6
LEVEL-RITEWater Tank Float Valve - Stock Tank Float Valves & Water Trough Float Valve for Livestock Waterer, Pond, Pool, Fountain - Automatic Water Level Control for Cattle, Goat, Horse - 3/4" Hose Connector
Main highlights- HAVE QUESTIONS ABOUT YOUR FLOAT VALVE? Our support team is ready to help with fast and friendly service—making sure your setup is smooth and your water flow stays steady.
- EASY SETUP – Quickly mount your float valve for water tank! The box includes 3/4" valve-to-hose connector, Teflon tape, and O-ring for a leak-free 245-gallon/hour flow! Just hang on the livestock water tank float and tighten the brackets and screws.
- SAVE WATER & CUT BILLS – Never worry again to shut water! Lower usage, maintain a level control flow, all while saving on bills with our automatic livestock waterer and aqua tank float.
- KEEP YOUR LIVESTOCK HYDRATED – Ensure a steady water supply with our automatic water float valve for cattle tanks, waterers, troughs, and ponds. Ideal for farms, homes, and backyards!
- HASSLE-FREE WATER CONTROL – Say goodbye to manual work! Our cattle trough float valve maintains the ideal water level, prevents overflow, reduces waste, and ensures steady water flow for livestock waterers.
- ️YEAR-ROUND RELIABILITY – Made from durable plastic, our tank valve for livestock resists rust and corrosion, ensuring reliable water flow in any farming or aquatic condition.
8.8Very Good
View offer on:
Show more
7
MEUPMEOPMEUPMEOP Float Valve, 1/2" to 3/4" 1" Water Float Valve, 304 Stainless Steel Float Valve, Fully Automatic Water Level Controller Float Valve for Water Tank, Livestock Troughs, Pool, Distiller
Main highlights- 【WORKING WATER PRESSURE and TEMPERATURE】The automatic water level ball valve works with 10psi to 150 psi or 0.2 to 10 bars water pressure,if water pressure is too low or too large,the float valve will not suitable for using, it will not work or be damaged. Working Temperature: 0°C~100°C. or 0-210°F
- 【WIDELY APPLICATION】It's used for people to maintain the water level in a garden waterfall, on a yard fountain,for a rain gutter garden project,using it to make an automatic shut-off for swimming pools,for chicken coops,for automatic chicken water drinker,for cattle watering drought,for rain collection barrels in the outdoors,used as automatic swimming pool filler,to keep water level constant in aquaponics setup etc.
- 【UNIVERSAL SIZE】The 1/2" float valve is 1/2" male thread itself, the Water Tank Float Valve comes with 1/2" to 3/4" adapter and 1/2" to 1" adapter, no mater your pipe size is 1/2" or 3/4" or 1", you can use this valve easily. so don't worry about the problem that the connection port cannot be installed. NOTE: The straight thread needs teflon tape to seal, if it leak water still, that means the telfon tape is not enough on the thread, need to add more teflon tape, normally hand-tighten it with 6-10 layers of PTFE tape to eliminate any leaks. If the free teflon tape is not enough, you can buy some of it from local hardware store.
- 【INCLUDED METAL CLIP】We have made a metail clip for this stainless steel float valve,so you can mount the valve on your water tank, it's very convenient for people to use, and it's very helpful.The clip is stainless steel, never rust.
- 【AUTOMATIC WATER LEVEL CONTROL FLOAT VALVE】The primary function of the water level float valve is to control the water level in a tank, pool, water trough, or any other container. It ensures that the water level is maintained within a specified range. Once it reaches the valve, it would automatically stop refilling water,so it will shut-off when the water reaches the internal float.
- 【304 STAINLESS STEEl FLOAT VALVE】304 stainless steel fully auto fill shut off water tank float valve is made of food grade material 304 stainless steel, ensuring the safety of drinking water. With an exquisite appearance and durable hard shell, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem. We use stainless steel as the valve body and use stainless steel screws, never rust, very safe.
8.7Very Good
View offer on:
Show more
8
MoestoontFloat Valve for Water Tank Designed for Water Level Control, Auto Filling & Shut Off, Durable Nylon Resin Water Troughs Float Valve for Livestock Tank, Swimming Pool, Fish Pond etc Grey 1pc
Main highlights- Sturdy and Reliable:The Valve body is made of strong nylon resin that resists corrosion, UV radiation and other forms of damage. Buy once and use for years. This pool auto fill float valve is ideal for use in livestock troughs, garden tanks, agricultural irrigation, aquariums ,landscaping ,fountains , ponds ,swimming pools and more.
- Positive Pressure Shut-Off Function: The water trough float valve operates reliably within a water pressure range of 5 psi to 150 psi and can effectively shut off when necessary to control the water flow. This ensures the reliability and stability of the valve under various water pressure conditions.
- Easy Installation：① 1" Universal Float Valve has 1" internal threads for connecting. You will need a water hose with an external thread or mounting bracket. ② Use plumber's tape on the threads of hose or mounting bracket and screw on the Float Valve. Tighten by hand only. Do not use plumbing compound. ③ Turn the water source to full volume. ④ The valve will close 1 1/2"-2" up from the bottom of the valve depending on the pressure.
- Compact Design: The compact float Valve uses a design that closes with water pressure, eliminating bulky levers and balls. Measuring 4.8 x 3.7 inches, this automatic water shut off valve fits in tight spaces and can be discreetly tucked away.
- Automatic Water Level Control: The water tank float valve operates automatically, adjusting to the water level in the tank or trough where it's installed. When the water level drops, the float mechanism lowers, opening the valve to allow water to flow until reaching the desired level. This ensures a constant water supply for livestock without manual intervention.
8.6Very Good
View offer on:
Show more
9
shawmin3/4 Inch Stainless Steel Float Valve for Water Tank, Heavy-Duty Design with Adjustable Angle Rod for Water Level Control, Includes 6 Inch Float Ball – Ideal for Water Troughs
Main highlights- 【Splash-Proof & Leak-Proof Design】 The 90-degree elbow with sealing plug minimizes water splashing and waste, making it ideal for ponds, and livestock watering systems.
- 【Premium Stainless Steel Construction】 Made from heavy-duty 304 stainless steel, this 3/4 inch float valve resists rust, corrosion, and high-pressure environments, ensuring long-lasting performance in commercial, agricultural, and industrial applications.
- 【Precise Automatic Water Level Control】 Features an adjustable 6-inch float ball for superior buoyancy and reliable shut-off, preventing overflows in water tanks, livestock troughs, and irrigation systems.
- 【Easy to Install & Versatile】 Fits standard 3/4-inch NPT threaded pipes and works with residential, agricultural, and commercial water systems. No maintenance required!
- 【Durable & Reliable Performance】 Designed for high-flow environments, this float valve ensures consistent water level control in storage tanks, fountains, and hydroponic systems.
8.5Good
View offer on:
Show more
10
JIANBENKJWater Trough Float Valve Livestock Stock Tank Float Valve for Water Tank of Pond Farm Livestock Cattle Goat Horse Pool,2PCS Automatic Control Waterer Level
Main highlights- Universal float tank valve: The automatic stock water tank float valve for livestock is widely used in water tank / water trough / waterer / watering buckets/gravity feed system auto water level control for livestock /poultry/pet/cattle/cow/dog/duck/fish/deer/horse/chicken in the pasture/farm/yard/barn/pool/pond/fountain/ reservoir.
- Standard 3/4” NPT Hose connection: The livestock automatic watering tank cattle float valve fits for standard 3/4” NPT garden hose connection (flow rate of up to 245 gallons per hour and a working water pressure between 20 and 50 psi), easy to assemble and connect to hose.
- Package includes: 2Pcs Stock Watering Tank Float Valves, 2 Sets of Mounting Screws, and 2Pcs PTFE Tapes
- Easy to install: The livestock waterer float valve pond is easy to assemble, Connect the 3/4’’ hose, and hang the entire float valve and bracket on the water tank, and tighten the screws to connect the bracket and housing.
- Durable and sturdy float tank valve: Our automatic cattle waterer float valve auto filler is made of high quality durable&sturdy material: PE thick plastic orange float ball + ABS thickened housing + Iron galvanized metal bracket. Meet the need to withstand external shocks.
- Automatic Water Trough Float Valve: The stock tank float valve livestock water tank float valve has float control water level,water trough auto filler without going out at night to check the water.No more forgetting to turn the water off.No more over filling and flooding our barn yard pool pond fountain basin.
8.4Good
View offer on:
Show more
Similar products on Amazon
