IX. 2900 Series Pilot Operated Safety Relief Valves (Cont.)
D. D-U Orifice (with Bellows)
20
21
Figure 4: Main Valve Construction - Bellows (D-U orifices)
E. V & W Orifice (with Bellows)
24
1A
1/2” NPT
DRAIN
8B
20
9
21
22
23
8A
Figure 5: Main Valve Construction - Bellows (V&W orifices)
Part
No.
Nomenclature
20
Bellows Assembly
21
Bellows Gasket
8A
Disc Retainer Screws
8B
Retainer Screw Lock Washer
9
Disc Holder Assembly
20
Bellows Assembly
21
Bellows Gasket
22
Bellows Bolts
23
Bellows Bolts Lock Washers
24 Guide Ring (Guide)
25
Bug Screen (not shown)
18 |
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