CMP Air Relief Plug for Pressure Filters 25376-007-005

CMP Air Relief Plug for Pressure Filters 25376-007-005

Filter gauge reading high right after a cleaning, or air hissing and spitting at the returns? Trapped air in the filter tank is the usual cause, and this CMP air relief plug is the little part that lets you bleed it off. It threads into the filter lid's air relief port — flip the wing top open to vent air until water appears, then close it. The "Air Relief" legend is molded right into the top so it is identifiable at a glance on a crowded equipment pad.

🚩 PRO TIP: Bleed air every time the system is opened — after cleaning the filter, emptying the pump basket, or any plumbing work. Air left in the tank compresses, skews the pressure gauge, and makes the "dirty filter" reading a lie.

PRODUCT FEATURES & SPECIFICATIONS:

• Brand: CMP (Custom Molded Products)
• MPN: 25376-007-005
• UPC: 606682810786
• Type: Air Relief Plug for Pressure Filters
• Design: Wing top molded "Air Relief" for tool-free opening
• Color: Black
• Weight: 0.05 lb

FREQUENTLY ASKED QUESTIONS:

• What does an air relief plug do? It vents air trapped at the top of a pressure filter. Open it with the pump running until a steady stream of water comes out, then close it — the filter is then fully primed with no air pocket.
• How do I know mine needs replacing? If it drips at the threads, the wing top is cracked, or it will not open or seal, replacement is the fix — it is a wear part that lives under pressure outdoors.
• Is this the CMP original? Yes — genuine CMP part 25376-007-005, the standard air relief plug used on pressure filter lids.

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