FAIRCHILD MODEL HPD
Pressure Regulator
Installation, Operation and Maintenance Instructions
You can mount the pressure regulator in any
position without affecting it's operation.
Clean all pipe fittings to remove contaminates
before installation.
Apply a minimum amount of pipe compound or
Teflon thread tape to the male threads of the fitting.
Start with the second thread back and work away
from the end of the fitting to avoid thread tape or
compound from contaminating the pressure
regulator.
The Inlet and Outlet are labeled "IN" and "OUT".
Tighten all connections securely. Avoid undersized
fittings that will limit the flow through the pressure
regulator
.
For more information, see Figure 1.
CAUTION
- Do not rely on the pressure regulator to
limit the supply pressure from the downstream
piping system. Employ properly sized pressure
limiting device to protect the piping system
downstream of the pressure regulator from the
effects of the supply pressure in the event of a
pressure regulator failure.
Table 2. Material of Construction
Installation
123.9 4.88
58.4 2.30
50.8
2.00
5.5 0.22
10.2 0.40
19.1 0.75
HPD1***A**K*N
1 Inlet & 1 Outlet Port
1/4 NPTF or BSPT
31.8
1.25
50.5
1.99
34.8
1.37
55.9
2.20
53.8
2.12
19.1
0.75
HPD1*2
N
******
2 x 10-32 UNF-2B X 0.36 dp
HPD1*2
U
******
2 x M5 x 1 X 0.36 dp
Front
137 5.40
32.8
1.29
3.20.13
Vent
83.8 3.30
92.7 3.65
HPD1***B**T*P
2 Inlet & 2 Outlet Ports
1/4 NPTF or BSPT
Thread
1 3/8 -18
Front
55°
55°
22.2
0.88 Hex
Dimensions:
[mm]
inches
Figure 1.
Model HPD Outline Dimensions
2
Valve Body & Bonnet
316 Stainless Steel
Supply & Exhaust Valves 316 Stainless Steel
Seats
CPTFE
PEEK
Vespel SP-1
Diaphragm
Inconel
Seals
PTFE
Springs
Supply Valve
Range Spring
316 Stainless Steel
Music Wire
External Finish
Passivated
