Fairchild HPD1***A**K*N Installation, Operation And Maintenance Manual

FAIRCHILD MODEL HPD
High Pressure Regulator

Installation, Operation and Maintenance Instructions

Introduction

The Fairchild HPD series pressure regulator is
a precision engineered, diaphragm sensing,
pressure reducing regulator designed to
regulate pressure of speciality gases and
liquids. This single stage,low to medium flow
capacity pressure regulator will fullfil pressure
control requirements in analytical, medical and
laboratory instrumentation. The 316 stainless
steel construction and engineered polymer
seals permit the use of both corrossive and non
corrosive media.

Features

Three polymer seat materials provide

•
media compatility and supply pressure
capability up to 6,000 psig.
Inconel diaphragm for corrosion

•
resistance and long life.
Five outlet pressrue ranges provide

•
optimum sensitivity
20 micron inlet filter

•

0.06 Cv flow coefficient

•
Relieving and non relieving designs

•
Tamperproof adjustment option

•

Table 1. Specifications & Limits

Maximum Supply
Pressure
(Seat Material)

3500 psig

CPTFE

PEEK

Vespel SP-1

Ambient
Temperature Limits

Supply Pressure
Effect

Connection Sizes

Connection Thread

Maximum Cv

Weight

240 Bar
24 MPa

6000 psig
410 Bar
41 MPa

6000 psig
410 Bar
41 MPa

-40º to +200ºF

-40º to +93ºC

< 2% of supply pressure
change

1/4" pipe

NPTF

Supply Valve 0.06
Exhaust Valve 0.02

2.21 lb

1.002kg

1

FAIRCHILD MODEL HPD

Pressure Regulator

Installation, Operation and Maintenance Instructions

34.8

1.37

53.8

2.12

31.8

1.25

HPD1***A**K*N

1 Inlet & 1 Outlet Port

1/4 NPTF or BSPT

55.9

2.20

4.88

123.9

58.4

2.30

50.5

1.99

HPD1*2N******
2 x 10-32 UNF-2B X 0.36 dp
HPD1*2U******
2 x M5 x 1 X 0.36 dp

19.1

10.2

0.75

0.40

5.5

0.22

Figure 1.



50.8

2.00



Front

Model HPD Outline Dimensions

19.1

0.75





32.8

1.29

137

5.40

92.7

3.65

22.2

0.88

83.8



55°





Hex

3.2

Thread
1 3/8 -18

3.30

Front

HPD1***B**T*P

2 Inlet & 2 Outlet Ports

1/4 NPTF or BSPT



55°

Vent

0.13

Dimensions:

[mm]

inches

Table 2. Material of Construction

Valve Body & Bonnet

Supply & Exhaust Valves

Seats

Diaphragm

Seals

Springs

Supply Valve
Range Spring

External Finish

316 Stainless Steel

316 Stainless Steel

CPTFE
PEEK
Vespel SP-1

Inconel

PTFE

316 Stainless Steel
Music Wire

Passivated

Installation

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

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.

- Do not rely on the pressure regulator to

2