Data Sheet for Product

Powertop Two-Way Valves Normally Open Technical Instructions
Document No. 155-310P25
July 18, 2012
Siemens Industry, Inc. Page 7
Table 7. Valve Assembly Parts and Service Kits. (See
Figure 3.)
Normally Open
Item Description Qty
10 16
Material
1 Actuator housing-upper 1 Item 28 Kit Nylon
2 Thread forming screw 8 Steel
3 Diaphragm 1
Items 26 and 28
Kits
EP rubber
4 Piston plate 1 Aluminum
5
Actuator compression
spring
1
Cadmium plated
steel
6 Actuator housing-lower 1
Item 28 Kit
Nylon
7 Stem lock nut 2
— —
Steel
8 Cap 1
—
— Brass
9 Packing washer 1 Copper
10 Stem packing large o-ring 2 EP rubber
11
Stem packing small o-
ring
2 EP rubber
12 O-ring retainer 2 Brass
13 Packing ring 1
Item 27 Kit
Teflon®
14 Bonnet 1
—
— Brass
15 Stem 1
—
— Stainless Steel
16 Disc holder 1
—
— Phos. Bronze
17 Shut-off disc 1 — — EP rubber
18 Throttle plug 1 — — Brass
19 Valve body and seat 1 — — Stainless Steel
20
Tail piece,
Angle Union Outlet only
1
413-003 657-121
Brass or Bronze
21
Union Nut,
Union Outlet only
1
657-100 609-004
Brass or Bronze
22 O-ring Items 25 or 26 Kits EP Rubber
25 Back-up ring 2 Item 27 Kit Teflon
26 Diaphragm Kit — 658-166 —
27 Stem Repacking Kit — 658-167 —
28
Actuator assembly
2 to 6 psi (12 to 41 kPa)
— 658-067 —
— Valve body assembly — 658-319 658-321 —
— Replacement tops — 658-072 658-074