US Plastic Corp. manufactures a variety of plastic check valves, including PVC true union ball and PVC check valves for air or liquid applications. PVC true union ball check valves are made with NSF listed material and 150 psi at 70° F. and prevent reversal of flow in piping systems.

Flomatic is a manufacturer of PVC check valves in a variety of sizes from 10up to 32 mm. Models include the 100MP, 901, 297D and the 290P. These PVC check valves are made from high-strength Noryl® GTX 830 Body with NITRILE (Buna-N) seal and polypropylene follower, and have threaded male x female connections.

Georg Fischer Piping Systems manufactures a variety of PVC check valves, including PVC wafer check valves designed for vertical or horizontal mounting in chemical processing and water treatment applications. Other types available include angle seat, check valves with strainers, and ball PVC check valves.

Plast-O-Matic manufactures a variety of PVC check valves. The patented diaphragm design of the CKM series provides normally-closed, zero reverse-flow operation, and is available in pipe sizes 1/2" 3/4" and 1". Other PVC check valves available include the CK series and CKS series with self-sealing design and leak-free sealing.

SMC manufactures a wide variety of PVC ball check valves with 1 psi stainless spring and ball configuration. Other models include the 426 Series Foot valve with 3/8" hose barb and mesh stainless suction strainer screen.

Check All Valve is an Iowa based manufacturer of a wide range of valve products including PVC ball check valves for a variety of industrial applications.

Ryan Herco Flow Solutions distributes a variety of PVC ball check valves in a variety of sizes from manufacturers such as Spears, Plastomatic, Hayward, GeorgFischer, Chemtrol, Asahi and more.

Asahi America is a manufacturer of various check valves including PVC ball check valves. These valves feature minimum flow resistance and low pressure drop, horizontal or vertical installation, all thermoplastic body, high impact PVC and vacuum service rating.

Commercial Industrial Supply offers PVC check valves in ball, wafer, and swing styles. These valves are used to release pressure from a pressurized system and to prevent any backflow from occurring within that system.