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APPENDIX D: Model 1830A Pressure Relief Valve

ITEM DESCRIPTION STANDARD MATERIALS OF CONSTRUCTION

ALUMINUM CARBON STL 316 SS

1 BASE AL(GR 356-T6) CS(GR WCB) 316 SS(GR CF-8M)

2 WEATHER HOOD ALUM CS 316 SS

3 WEATHER HOOD POST 316 SS 316 SS 316 SS

4 HEX NUT SS SS SS

5 LOCK WASHER SS SS SS

6 FLAT WASHER SS SS SS

7 STEM GUIDE ALUM CS 316 SS

8 HEX JAM NUT SS SS SS

9 EYE NUT (3"-12" ONLY) SS SS SS

10 PRESSURE SCREEN 316 SS 316 SS 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 PRESSURE 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 SEAT INSERT (6"-12" ONLY) (4) (NOT SHOWN) 316 SS 316 SS 316 SS

19 * O-RING (6"-12" ONLY) (3) (NOT SHOWN) FKM FKM FKM

20 SET SCREW (6"-12" ONLY) (NOT SHOWN) SS SS SS

21 SEAT INSERT (2"-4" ONLY) (4) (NOT SHOWN) N/A 316 SS N/A

22 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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Groth 1800A Manuel d'utilisateur Page 14