Top Brand Check Valve, 1/2 in, Single, Inline Piston, Brass, MNPT x FNPT - CHK BRS 810-8F8M-B Capacity-20 oz For installation behind 1/2" thick

For installation behind 1/2" thick drywall or mirror

Bradley 107-342 Access Panel-Wall Replacement Part

Bradley M25-024 Electrical Wireway Ass'Y Replacement Part

and stairways

Top Brand Check Valve, 1/2 in, Single, Inline Piston, Brass, MNPT x FNPT - CHK BRS 810-8F8M-B Capacity-20 oz For installation behind 1/2" thickIdeal for installation in tight spaces, this piston spring check valve can provide backflow protection for a variety of applications. Model has an embedded O ring that seals on the seat. Pressure in the direction of flow moves the piston and seal off the seat and exposes the cross holes in the piston. Valve is designed to provide a positive seal at very low back pressure or slight vacuum.