From vendor's website:
Valve opens at less than 3 psi; can withstand up to 400 psi back pressure.
- ItemCheck Valve
- TypeIn Line
- Inlet (In.)1/8 (F)NPT
- Outlet (In.)1/8 (F)NPT
- MaterialCast Brass
- Max. Pressure (PSI)250
- Cracking Pressure (PSI).1
- Hex Size (In.)7/8
- Flow Range Free Air (CFM)0 to 12
- Max. Temp. (F)450
- MountingVertical or Horizontal
- Tap Size1/8" for Pressure Switch Unloader Connection
- Length (In.)1-3/4
- Spring MaterialStainless Steel
- DiscPositive Seating Fluoropolymer, for Maximum Air Flow
- PoppetFlouropolymer
- ApplicationIn-Line Check Valve