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Groth 1800A User Manual

Page 11

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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.

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