Best Plastic Check Valves

ALEGI Aquarium Air Pump Accessories with Non-Return Check Valves,Air Control Valve for 3/16\ Aquarium Tubing (6 Check valves+6 Control Valve) (Red)

Package Included : 6 Pcs Non-Return Check Valves and 6 Pcs Aquarium Air Control Valve..
【Non-Return Check Valves】Small and compact, which protect you air pump by preventing aquarium water from back siphoning during a power outage..
Made of quality plastic, durable and sturdy, not easy to break, ensure long time of usage.
【Air Control Valve】Simple design for easy use. The Aquaculture Air Valve can be connected to aquarium tubing..

Application: the check valve can be applied for common aquarium air pumps, protect you air pump by preventing aquarium water from back siphoning....
Quality: made of quality plastic, durable and sturdy, not easy to break, ensure long time of usage.
Practical design: the valves are detachable, you can unscrew to open it so as to clean and repair them easily.
Measurement: the air hole diameter is 4 mm/ 0.16 inch, the overall length is approx. 4.2 cm/ 1.7 inches, proper size for most fish tank.
Package contents: 20 pieces air pump check valves, sufficient for daily using and replacement.

This item cannot be shipped via express / air services.
Ideal for many uses including lubricating gears, o-rings, plastic parts, etc.
Prevents metal-on-metal wear and corrosion.
Proper lubrication solves 90% of common Gas Blow Back problems.
The best all-purpose silicone spray on the market!.
For AEG & GBB: Spray into magazine bb chamber periodically to prevent dust build-up == For Valves: Spray into gas-in and gas-out valves to check for leakage and to inflate the dried o-ring seal to prevent mag air leaks == Silicon oils are used by technicians all over the world to test gas leakage, o-rings and valves == For Gas Blowback: It is a MUST that you lubricate your gun and keep it oiled for quality performance == There are many internal assemblies that may not work properly when dried.

Function: the check valves are applicable for fluid systems to prevent countercurrent liquids, or for pneumatic systems to prevent reverse flow of compressed air.
Material and size: the one way check valves are made of PVDF, sturdy, wear-resistant and durable for long-term use.
Each check valve measures 6.3 mm/ 1/4 inches, the total length is 38 mm/ 1.50 inches.
Features: the pipe port of the check valve is designed with a pagoda-shaped card slot, non-slip and non-toxic, with good airtightness and good adsorption performance.
Easy to install: the non-return check valve is easy to install, convenient for you to unscrew and replace.
Application: the non-return check valves are widely applied for automotive parts, machinery industry, household appliances, agriculture, etc..

...ual dripline control, use as tank valves, drain valves, return valves or in any situation where fluid restriction is needed. For use with irrigation, aquarium plumbing, pump return line, saltwater applications, RV camper and trailers, pex tubing, hydroponics, and aquaponics..
Leak-Free Seal: These non-corrosive plastic flow valve fittings are guaranteed to provided a secure, watertight connection that handles an operating pressure of up to 45 PSI. Constructed to be wear-resistant to assure long term reliability of connections. Confidently install these barbed fittings without clamps by using our Valve Sizing Chart (see photo) to get the perfect fit. Match the ID (Inner Diameter) of your hose or tube with the acceptable IDs listed on the chart..

【PVC Ball Check Valve】Schedule 80 PVC ball check valves have a spherical ball inside the valve body which works as a check to allow flow in one direction and close off to prevent back-flow..
【INSTALLATION TIP】PVC union check valves are designed for VERTICAL installations, MUST be used in an upflow position to work properly. Check valves MUST be installed with the valve's flow arrow pointing in the direction of the flow. Do not install valve upside down.（NOTE: NO SPRING).
【PVC Union Check Valve】True union check valve, can be taken apart for cleaning, allows for easy removal without breaking down the piping connection..
【Material】1'' Slip check valve made of PVC material, O-ring with EPDM material, low-temperature-resistant, impact-resistance, ultraviolet-resistance, rust-resistance. Fits for Schedule 80 1 Inch Pipe..
【Application】PVC Swing Check Valve 1’’(DN25) - Non-return or "one way" valve is ideal for flow control, such as commercial plumbing, aquariums, irrigation, swimming pools, water parks and OEM applications..

Replacement for General Pump Check Valves Kit - Kit 1, Valves and O-Rings (K01).
Complete Valve Kit Includes Six O-rings and Six Check Valves Complete.
High Quality Material for Best Performance.

Body Material:Stainless Steel 316,200PSI/PN16,ANSI B1.20.1.
Working Pressure 200 WOG,Port Types:Female x Female threaded.
Temperature range: -60 to 450 degree Fahrenheit,Suitable for full range of liquids and gas.
Check valves are used to help direct flow in one direction. The stainless steel bodies and PTFE seals are highly corrosion resistant allowing these check valves to be used with a wide variety of fluids including, but not limited to water, oil, gas, air, light alkali's, acids, biodiesel, fuels and alcohols..
Swing check valves are for horizontal use only. When fluid pushes on the stopper in the correct direction, it will "swing" open to allow flow. If flow moves in the opposite direction, it will swing shut. The check valve cannot be used in vertical applications as gravity may affect the function of the swinging motion..

You will get 49 Pcs Aquarium Air Pump Accessories- 1 Pcs 4 Way Airline Splitter + 2 Pcs Air Control Valve + 4 Pcs Non-Return Check Valves + 10 Pcs Suction Cups + 30 Pcs Airline Connectors ( including 6x Cross Connectors + 6 x Y Connectors + 6 x T Connectors + 6x L Connectors + 6 x I Connectors.).
【Non-Return Check Valves】Small and compact, which protect you air pump by preventing aquarium water from back siphoning during a power outage. Detachable design makes it easier for you to unscrew, clean and repair..
【Ceramic Air Stones Diffuser】These bubbles stones provide oxygen for fish to breathe, and lower CO2 level.
Durable and sturdy material, washable. Safe and non-toxic to your fish, perfect for aquarium, fish tank, pond, hydroponics..
【Air Tubing Connectors】 5 shape connectors available meets various needs. Made of plastic for long-time use, healthy and non-toxic. Great accessories for your fish tank tube,air pump,check valve,bubble stone connection..
If you are unhappy with these product, we'll get it replaced or issue you a full refund, no questions, no charge, no kidding..