EB 2558 EN
5
Design and principle of operation
Fig. 1 · Functional diagram of Type 2357-31
Type 2357-31
1
Valve body
2
Pressure build-up plug
2.1 Tubular plug
3
Operating diaphragm
4
Closing spring
5
Set point spring(s)
6
Set point adjuster, Allen key (width across flats SW 6)
6.1 Lock nut (width across flats SW 17)
7
Lower body section
10 Non-return unit (accessories)
11 Soldering nipple with ball-type bushing (accessories)
12 Filter (accessories)