FibroPool Swimming Pool Check Valve 2 in Posi-Close - Positive Seal

In this review the FibroPool 2 in Posi-Close check valve is evaluated for pool and spa owners who need a simple, serviceable backflow solution. The bottom line: this valve is for anyone installing heaters, chemical dispensers or salt generators who wants a lubeless, spring-loaded check that opens at a reliable low pressure; it installs with standard 2 in glue connections and its CPVC body resists temperature and impact during normal pool service.

Key Features

• 2 in slip ports: The valve accepts standard 2 in pipe glued directly into the ports, making retrofit or new installations straightforward.
• Posi-Close spring action: The spring-loaded mechanism opens at about 5 PSI, providing consistent flow control for downstream equipment.
• CPVC construction: The body material gives improved temperature and impact resistance compared with basic plastics, which helps in outdoor pool applications.
• PTFE lubeless seats: Serviceable seats do not require grease or lube, reducing maintenance steps and contamination risk for chemical systems.
• Serviceable design: The valve can be disassembled for inspection or replacement of internal parts without replacing the entire assembly.

Who It's For

The FibroPool Posi-Close check valve is best for pool professionals and knowledgeable DIYers installing or upgrading heater lines, chemical dispensers, or salt chlorinators where a positive seal and predictable opening pressure are important. Its 2 in slip connections make it suitable for many common plumbing runs around residential pools.

Those who should look elsewhere include users needing very high pressure ratings beyond typical pool equipment or those requiring threaded connections without glue fittings; adapters can be used but a different valve type may be more convenient for non-glued systems.

Pros & Cons

Pros

• Spring-loaded 5 PSI opening gives consistent performance and helps protect downstream equipment.
• PTFE lubeless seats reduce maintenance and eliminate the need for grease in chemical systems.
• CPVC body offers enhanced temperature and impact resistance for outdoor pool environments.
• Simple 2 in slip ports make installation quick for standard PVC pipe runs.

Cons

• Some users report mixed experience with long-term durability, so heavier commercial duty use may need a higher-rated valve.
• Requires glued 2 in slip connections, which may not suit systems built with threaded fittings without adapters.

Specifications

Our Verdict

The FibroPool 2 in Posi-Close check valve is a practical, value-minded choice for residential pool owners and installers needing a reliable check with a positive seal and low opening pressure. Its CPVC construction and lubeless PTFE seats reduce routine maintenance and make it a sensible pick for heater and chemical or salt generator lines, though those needing threaded connections or extreme commercial durability should consider alternate fittings.

Frequently Asked Questions

Can I glue standard 2 in PVC pipe into this valve?
Yes, the valve is designed with 2 in slip ports so standard 2 in pipe can be glued directly into the ports.

At what pressure does the valve open?
The spring-loaded mechanism is set to open at approximately 5 PSI to allow reliable flow for heaters and chemical feeders.

Does the valve need grease or regular lubrication?
No, the PTFE seats are lubeless and the valve is serviceable without the need for grease.