These Check Valves are 3/8" OD Hose-Barb on both ends, to fit 3/8" ID hose or tubing. They are made from the highest quality materials. Manufactured with a Kynar® exterior, and a Viton® diaphragm. We choose this type of check valve for their excellent resistance to alkalis and acids. Since most Hydrogen Generators use baking soda or a hydroxide as an electrolyte, we find these to be the optimum choice over all others available. Kynar® material also has an excellent resistance to ozone.

These are multi-purpose fittings and may possibly be used for Automotive, Boat (Marine), Hydroponic, Irrigation, Pneumatic, Agriculture, Spa, Pool, and Aquarium applications.

Part Specifications

Natural Kynar® (NK) or (K)

• Temperature Range: -80 °F to 226 °F (107 °C)
• Pressure: 260 psi @ 70 °F*
• NK material can be autoclaved to 285 °F (140 °C)
• Chemically resistant to: most acids, salts, weak bases, halogenated solvents, alcohols, nuclear and UV radiation, oxidants, ozone and deionized water.
• Excellent rating for Ozone applications.
• Animal Derivative Free
• Meets USP Class VI requirements

*Applies to molded one-piece fittings.

Viton® (V)

• Temperature Range: -20 °F to 400 °F (205 °C)
• Diaphragm Max Pressure: 2000 psi
• Viton® material can be autoclaved.
• Chemically resistant to: Hydrocarbons, Many Aggressive Chemicals, Diluted Acids, Weak Alkalis, Mineral Oils, Aliphatic and Aromatic Hydrocarbons, Chlorinated, UV, and Ozone.
• Excellent rating for Ozone applications.
• Poor resistance to Ketones and Acetone.
• Commonly used in applications involving Hot Water, Acid, Alkali, Oils, Hydrocarbon, Salts Solutions.