Masoneilan 173 Series Pressure Regulator Instruction Manual | 7
© 2016 General Electric Company. All rights reserved.
4.2 Cross-Section Drawing 173-50 Double Diaphragm
These regulators shown in Figure 10 have two diaphragms separated by a chamber that communicates with the outside.
The controlled pressures act under the lower diaphragm (through an internal sensing line connection) and over the upper
diaphragm (through a sensing line nipple on the spring housing). The plug is kept closed by the spring.
Figure 10
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 Packing Gland
15 Lock Nut
*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
29 Nute
30 Actuator Ring
31 Intermediate
*Recommended spare parts.
