Instruction Manual

Table 1. Type D34 Approximate Weight
Specications
This section lists the specications for Type D34 water pressure reducing valve. Factory specication are stamped
on the nameplate fastened on the valve at the factory.
Valve Sizes
NPS 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4, 5 and 6 /
DN 25, 32, 40, 50, 65, 80, 100, 125 and 150
End Connection Styles
NPT, CL125 and CL250
Maximum Temperature
(1)
200°F / 93°C
Maximum Pressure
(1)
CL125: 165 psig / 11.4 bar
NPT and CL250: 200 psig / 13.8 bar
Spring Ranges
10 to 40 psig / 0.69 to 2.76 bar
30 to 80 psig / 2.07 to 5.52 bar
70 to 140 psig / 4.8 to 9.65 bar
Flow Coe󰀩cient, C
v
NPS 1 / DN 25: 3.3
NPS 1-1/4 / DN 32: 7.5
NPS 1-1/2 / DN 40: 10.4
NPS 2 / DN 50: 14.4
NPS 2-1/2 / DN 65: 21.6
NPS 3 / DN 80: 32
NPS 4 / DN 100: 52
NPS 5 / DN 125: 84
NPS 6 / DN 150: 118
Construction Materials
Body: Cast Steel or Cast Iron
Stem and Seat: Stainless steel
Disc and Diaphragm: Nitrile (NBR)
Spring: Steel
Gasket: Grafoil
Approximate Weight
See Table 1
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
VALVE SIZE NPT CL125 CL250
NPS DN lbs kg lbs kg lbs kg
1 25 22 10.0 - - - - - - - - - - - - - - - -
1-1/4 32 24 10.9 - - - - - - - - - - - - - - - -
1-1/2 40 34 15.4 - - - - - - - - - - - - - - - -
2 50 44 20.0 51 23.1 57 25.9
2-1/2 65 - - - - - - - - 78 35.4 89 40.4
3 80 - - - - - - - - 108 49.0 128 58.1
4 100 - - - - - - - - 198 89.8 225 102
5 125 - - - - - - - - 352 160 394 179
6 150 - - - - - - - - 500 227 550 249
2
Type D34