Masoneilan 78-40 Filter relief valve

Inlet Pressure Rating 210 psi (1.5 MPa, 15 bar) maximum
Pressure Set Range
5-40 psi (35-280 kPa, 0.35-2.8 
bar)5-100 psi (35-700 kPa, 0.35-7 
bar)
Connection 1/4 NPT
Rated Cv 0.25
Filter Element Sintered Porous Polyethylene (5μ)
Ambient Temperature 
Range-40° to +83°C (-40° to +182°F)
Low Temperature 
Range -50°C to +60°C (-58°F to 140°F)
High Temperature 
Range 0°C to 100°C (32°F to 212°F)
Air Consumption 0.004 scfm (100 sccm)
Weight 14 oz. (0.4 kg)
Materials of 
Construction See Table next page