Groth 1800A - Manual (Page 16)

Page 16 of 17
APPENDIX F: Model 1870A Vacuum Relief Valve
ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION
ALUMINUM CARBON STL 316 SS
1 OUTLET AL(GR 356-T6) CS(GR WCB) 316 SS(GR CF-8M)
2 LOCK WASHER SS SS SS
3 HEX NUT SS SS SS
4 STUD SS SS SS
5 COVER AL(GR 356-T6) CS(GR WCB) 316 SS(GR CF-8M)
6 VACUUM STEM 316 SS 316 SS 316 SS
7 * COVER GASKET PTFE PTFE PTFE
8 GUIDE ROD 316 SS 316 SS 316 SS
9 PIPE PLUG 316 SS CS 316 SS
10 VACUUM PALLET (1) (NOT SHOWN) 316 SS 316 SS 316 SS
11 * VACUUM DIAPHRAGM, PRIMARY (2)(3) (NOT SHOWN) FEP FEP FEP
12 * VACUUM DIAPHRAGM, BACKUP (2) (NOT SHOWN) FEP FEP FEP
13 VACUUM RETAINER PLATE (NOT SHOWN) 316 SS 316 SS 316 SS
14 FLAT WASHER (NOT SHOWN) SS SS SS
15 HEX EXPANDING LOCK NUT (NOT SHOWN) SS SS SS
16 SEAT INSERT (8"-14" ONLY) (4) (NOT SHOWN) 316 SS 316 SS 316 SS
17 * O-RING (8"-14" ONLY) (3) (NOT SHOWN) FKM FKM FKM
18 SET SCREW (8"-14" ONLY) (NOT SHOWN) SS SS SS
19 VACUUM SCREEN ASSY, (OPTIONAL) 316 SS 316 SS 316 SS
20 SEAT INSERT (2"-6" ONLY) (4) (NOT SHOWN) N/A 316 SS N/A
21 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.