Groth 1800A - Manual (Page 11)

Page 11 of 17
APPENDIX A: Model 1800A Pressure/Vacuum Relief Valve
ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION
ALUMINUM CARBON STL 316 SS
1 BODY AL(GR 356-T6) CS(GR WCB) 316 SS(GR CF-8M)
2 HEX NUT SS SS SS
3 LOCK WASHER SS SS SS
4 FLAT WASHER SS SS SS
5 STEM GUIDE ALUM CS 316 SS
6 HEX JAM NUT SS SS SS
7 LIFTING LUG (3"-12" ONLY) GALV CS GALV CS GALV CS
8 WEATHERHOOD POST 316 SS 316 SS 316 SS
9 PRESSURE SCREEN 316 SS 316 SS 316 SS
10 WEATHERHOOD ALUM CS 316 SS
11 PRESSURE STEM 316 SS 316 SS 316 SS
12 PRESSURE PALLET (1) (NOT SHOWN) 316 SS 316 SS 316 SS
13 * PRESSURE DIAPHRAGM, PRIMARY (2)(3) (NOT SHOWN) FEP FEP FEP
14 * PRESSURE, DIAPHRAGM, BACKUP (2) (NOT SHOWN) FEP FEP FEP
15 RETAINER PLATE (NOT SHOWN) 316 SS 316 SS 316 SS
16 FLAT WASHER (NOT SHOWN) SS SS SS
17 HEX EXPANDING LOCK NUT (NOT SHOWN) SS SS SS
18 GUIDE ROD 316 SS 316 SS 316 SS
19 COVER AL(GR 356-T6) CS(GR WCB) 316 SS(GR CF-8M)
20 VACUUM STEM 316 SS 316 SS 316 SS
21 STUD SS SS SS
22 * COVER GASKET PTFE PTFE PTFE
23 VACUUM PALLET (1) (NOT SHOWN) 316 SS 316 SS 316 SS
24 * VACUUM DIAPHRAGM, PRIMARY (2)(3) (NOT SHOWN) FEP FEP FEP
25 * VACUUM DIAPHRAGM, BACKUP (2) (NOT SHOWN) FEP FEP FEP
26 VACUUM RETAINER PLATE (NOT SHOWN) 316 SS 316 SS 316 SS
27 SEAT INSERT (6"-12" ONLY) (NOT SHOWN) 316 SS 316 SS 316 SS
28 * O-RING (6"-12" ONLY) (3) (NOT SHOWN) FKM FKM FKM
29 SET SCREW (6"-12" ONLY) (NOT SHOWN) SS SS SS
30 VACUUM SCREEN ASSY. (OPTIONAL) 316 SS 316 SS 316 SS
31 SEAT INSERT (2"-4" ONLY) (NOT SHOWN) (4) N/A 316 SS N/A
32 PALLET WEIGHT (5) (NOT SHOWN) LEAD LEAD LEAD
* SPARE PARTS
(1) PALLET ALSO AVAILABLE IN ALUMINUM.
(2) Fluoropolymer IS A REGISTERED TRADEMARK OF E.I. DU PONT DE NEMOURS AND CO. USED UNDER LICENSE.
(3) ELASTOMERS ALSO AVAILABLE IN AFLAS, BUNA-N, EPDM & FFKM
(4) SEAT: CS UNITS – WELDED
(5) AVAILABLE IN 316 SS; CONSULT FACTORY FOR ALT. MATERIALS.