Parker manufactures and offers five series' of check valves. The CF Series feature pressure ratings of 3000 PSIG (207 Bar). The C Series are available in six sizes with port sizes from 1/8 inch up to one inch. Their CB Series check valves offer pressure ratings of 3000 PSIG (207 Bar) to 6000 PSIG (414 Bar), and inlet sizes of 1/16" to 3/4". The CO Series are designed for demanding leak integrity applications.

US Plastic Corp distributes a variety of check valves with spherical or ball shaped closure members. Materials include PVDF, CPVC, polypropylene and PVC. Brands also include Asahi, Cepex, Hayward, Nibco, and more. Types include Asahi PVDF, Cepex ball and economy wafer, Hayward CPVC/polypropylene/PVC true union ball, Hayward swing, mini, Nibco chemtrol true union ball, PVC true union ball, SMC PVC, and sump pump swing check valves.

Swagelok provides a line of adjustable and fixed cracking pressure check valves, including spring and poppet, lift, all-welded, ultrahigh purity O-ring-free fluropolymer, and disk/ball/air blow styles. Swagelok spring-and-poppet check valves feature nominal cracking pressures ranging from 1/3 to 600 psi, stainless steel and brass materials, and end connections in sizes 1/8 to 1 inches.