Reviews Water Check Valves

NIBCO F910B-LF Silent Check Valve Lead-Free* Class 125 Flanged Bronze Seat 2-1/2

The NIBCO lead-free cast iron sliding disc silent check valve is spring actuated with renewable cast bronze seat and bronze disc.
The spring return reduces noise for quiet operation.
The wafer style check valve features a flanged wafer body style to fit between standard flanges.
The check valve is recommended for commercial and industrial water applications.
Lead Free refers to the wetted surface of pipe.
fittings and fixtures in potable water systems that have a weighted average lead content ≤ 0.25% per the Safe Drinking Water Act (Sec. 1417) amended.
Spring actuated (1/2 psi cracking pressure).

Material: this check valve is made of ABS plastic, and the internal valve core is made of silicone, ABS plastic has high hardness, good heat resistance and corrosion resistance, strong resistance to acids and alkalis, and is resistant to organic solvents to some extent.
Suitable size: you will get 6 no-return check valves with a size of 3/8 inch, which is 1.61 inches long, enough quantity to meet your use of check valves in different situations to prevent fluid backflow.
Function introduction: 3/8 check valve is applied in fluid system to prevent fluid backflow, or applied in pneumatic system to prevent compressed air backflow.
This check valve can be applied in the temperature range of -20 degrees Celsius to 70 degrees Celsius.
Widely use: one-way valve can be applied in water process, air purification, automobile parts, machinery industry, household appliances, etc., to effectively prevent backflow of the medium.
Note: when installing the check valve, pay special attention to the flow direction of the medium.
The normal flow direction of the medium should be consistent with the arrow direction indicated on the valve body, otherwise the normal flow of the medium will be cut off.

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.

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.

...de plenty of oxygen to each bucket via air hoses, helping to build a healthy root system faster..
User-friendly Design: The recirculating deep water culture system is water-saving, labor-saving, and high-yielding. It features tight seals to ensure no leaks and inline check valves to avoid reverse flow. Besides, there is a water level device on the side of the bucket to allow you to observe the water condition at any time..
Complete Hydroponic System: The DWC bucket system is easy to use with complete accessories, including 4 planting buckets, 6 m air hose, 1 set of connectors, 4 water level devices, 4 check valves, 4 air stones, 1 air pump, clay pebbles, and 1 instruction manual..
Wide Application: You can enjoy fresh vegetables and fruits with our DWC system. It is suitable for the grow tent, greenhouse, garden, balcony, office, home, and other indoor or outdoor places without soil..

【Material】The one way check valves are made of PVDF, and the Diaphragm material is silicon rubber..
【Function】 These 1/2 Inch check valves are applicable for fluid systems to stop countercurrent liquids, or for pneumatic systems to prevent reverse flow of compressed air..
【Size】Diameter: 1/2"barb, can fit 1/2" hose ID.
【Performance】Strong Resistance to acid, alkali, salt corrosion ability, can be used for different types of liquid.Normal performance under 25 ℃ to 60 ℃..
【Wide Application】Widely used in water treatment, air purification, automotive parts, machinery industry, medical equipment, household appliances and other fields..

Kit includes: 2 replaceable check valves, 2 diaphragms, 1 dust filter pad and instructions.
Repair kit for Aqueon QuietFlow Air Pump Model 60.
Replace check valve should water enter into air pump through air tubing.
Replace dust filter pad when maintenance air pump.

Replacement filters for the Pure UF-3 system sediment pre-filter reduces dirt, silt and rust.
the carbon pre-filter reduces chlorine taste.
the UF membrane reduces unwanted chemicals and the VOC Carbon Block Filter reduces lead and chemicals like MTBE's, atrazine, and benzene.
Kit includes two Sediment Filters, two Carbon Block Filters, and one Hollow-Fiber Membrane.
This space-saving, compact design allows this system to fit comfortably under your sink, requires fewer tube connections, includes back-flow prevention valves installed between the elements and cartridges have double O-rings so they won't leak.
The easy, quick-change push release filter system allows for easy filter change with no need to shut off the water source, is installed with check valves in the filter lid between cartridges to prevent back-flow and shut off valves in each filter head that shuts off the water flow when cartridges are removed.
Maximum operating pressure is 80 psi and to maintain top performance replace sediment and carbon block filters every 6 months, UF membrane filter every 12 months.