Simmons 606SB 2 Hole Check Valve, 1" x 1/4" Screwdriver Sets accepts most gas to attachments

accepts most gas to attachments to provide multiple use

Black oxide finish resists corrosion and increases life of bit

Blocks out air and moisture

Average life 5000 Hours

durable galvanized steel outer pipe has internal spacing beads to assure a uniform insulating air space between pipe walls

Simmons 606SB 2 Hole Check Valve, 1" x 1/4" Screwdriver Sets accepts most gas to attachments"Simmons" Check Valves 400 PSI working pressure For Diaphragm Tanks Female Threaded 2 Tappings: (2) 1 4" Outlet Size Ins.=1 Silicon Bronze Lead Free Silicon bronze cast body and poppet contain less than 0. 05% Lead Furnished with Buna N o ring, stainless steel spring, stainless steel washer and stainless steel locknut