Double Check Valve Assembly Series Watts 774 Size 6 in Connection Flanged Body Material Stainless Steel Temp Range 33 to 110 Degrees F Max Temp 110 Degrees F Max Pressure 175 psi Width 11 in Length 48 1/2 in Height 21 1/2 in Features NRS Shutoff Short Lay Length Standards AWWA C510-92 CSA B64.5 Compliance ASSE 1015 FM Approved (4 in to 10 in OSY Only) UL Classified (OSY Only)