6 | GE Oil & Gas
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Figure 9
4. Installation and Assembly Instructions - 173-50 Differential Pressure Regulator
There are two distinct types of 173-50 Series differential pressure regulators – those with a single diaphragm and those with a
double diaphragm.
4.1 Cross-Section Drawing 173-50 Single Diaphragm
In regulators with a single diaphragm (as shown in Figure 9), one of the controlled pressures acts under the diaphragm
through an internal sensing line connection on the spring housing. The plug is kept closed by the spring.
Ref.
Part Name
1 Blindhead
*2 Gasket Set
3 Body
4 Guide
5 Diaphragm Case
6 Diaphragm Plate (Upper)
*7 Diaphragm
*8 O-Ring
9 Spring Case
10 Spring
11 Nut
12 Screw
*13 Gasket
14 Lock Nut
15 Packing Gland
*16 Bearing
17 Spring Button
18 Adjusting Screw
19 Spring Guide
20 Screw
21 Nut
22 Screw
*23 Plug
*24 Ring
*25 Disc
*26 Seat
*27 Screw
28 Gasket Plate
*Recommended spare parts.
