10 Series 769 FireLock NXT™ Preaction Valve
30.82
MATERIAL SPECIFICATIONS
Body:
Ductile iron conforming to ASTM A-536, grade 65-45-12. Ductile iron conforming to ASTM A-395,
grade 65-45-15, is available upon special request.
Clapper:
Aluminum bronze UNS-C95500
Latch:
Aluminum bronze UNS-C95500
Clapper Seal:
Peroxide cured EPDM, ASTM D2000
Seat O-rings:
Nitrile
Springs:
Stainless steel (300 Series)
Shafts:
Stainless 17-4
Diaphragm:
Peroxide cured EPDM with fabric reinforcement
BILL OF MATERIALS
1 Valve Body 9 Clapper Spring 16 Latch Spring
2 Clapper 10 Clapper Shaft 17 Latch Shaft Bushing and O-Ring (Qty. 2)
3 Clapper Seal 11 Clapper Shaft Bushing and O-Ring (Qty. 2) 18 Diaphragm
4 Seal Ring 12 Cover Plate 19 Diaphragm Cover Plate
5 Seal Washer 13 Cover Plate Gasket 20 Diaphragm Cover Plate Cap Screws (Qty. 8)
6 Seal Retaining Ring 14 Cover Plate Bolts (Qty. 7) 21 Latch Shaft
7 Seal Assembly Bolt 15 Latch 22 Drain Plug
8 Bolt Seal
1
12
11
17
17
22
11
21
20
9
4
3
10
18
19
7
6
5
8
15
16
14
13
2
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