1" Union x 1" Union Clear Check Valve – 50 lb Spring, PVC, Transparent Body (2)

This high‑performance 1″ Clear PVC True‑Union Spring Check Valve (utility style) is engineered for efficient one‑way flow control in demanding fluid systems. Featuring a robust 50 lb stainless steel spring and EPDM seating, the valve resists backflow reliably—even under fluctuating system pressures—while preventing water hammer and reverse flow.1 Its transparent polyvinyl chloride body offers full visual access to the internal components, allowing users to easily inspect spring and seal condition without disassembly. Constructed with true‑union ends, both sides of the valve unscrew independently for effortless removal, enabling maintenance or replacement without cutting the pipeline.

• Durable PVC body made from rigid, clear Schedule‑40 PVC offers excellent chemical and corrosion resistance. Ideal for use in irrigation systems, pool/spa installations, and general fluid‑handling environments
• Transparent housing provides full visual access to the spring‑assisted flapper and EPDM seat, allowing users to inspect internal function and seal condition without disassembly
• Equipped with a robust stainless‑steel spring (rated ~50 lb) and a high‑grade EPDM seal, the valve prevents backflow even under changing pressure conditions while minimizing water hammer and noise
• True‑union design features fully independent union ends that unscrew from both sides, enabling easy valve removal or servicing without cutting or disturbing the pipeline
• Rugged and versatile—handles up to 150 psi and temperatures up to ~140 ° F, and can be installed horizontally or in up‑flow vertical orientation for pressure regulation, irrigation control, pool circulation systems, and more