KEY PART NAME MATERIAL PART NUMBER REMARKS
1 Adjusting Screw Steel WAL4-04760-0 - - - -
2 Locknut Steel WAL5-02877-0 - - - -
3 Standard Nut Steel WAL5-02877-0 - - - -
4 Spring Yoke Cast iron WAL4-06177-0 - - - -
5 Guide Stud Stainless steel WAL4-05419-0 - - - -
6 Upper Spring Button Steel WAL4-01078-0 - - - -
7 Adjustment Spring, 5 to 25 psi / 0.35 to 1.72 bar Steel WAL5-05016-0 Use 2 Diaphragm
Adjustment Spring, 10 to 75 psi / 0.69 to 5.17 bar Steel WAL5-05028-0 Use 2 Diaphragm
Adjustment Spring, 40 to 150 psi / 2.76 to 10.3 bar Alloy steel WAL5-05030-0 Use 3 Diaphragm
8 Standard Steel WAL5-05200-0 - - - -
9 Lower Spring Button Steel WAL4-01041-0 - - - -
10 Diaphragm Nut Steel WAL5-02872-0 Note 1
Diaphragm Nut Steel WAL5-02848-0 Note 2
11 Cowl Cast iron WAL4-01513-0 - - - -
Cowl Steel WAL4-01514-0 - - - -
12 Diaphragm Stainless steel WAL4-01659-0 A, B See item 7
13 Diaphragm Bolt Steel WAL5-04770-0 Note 1
Diaphragm Stud Steel WAL5-05480-0 Note 2
14 Bushing Stainless steel WAL4-01132-0 See item 16
15 Stem Stainless steel WAL4-05305-1 B
16 Body and Bushing Cast iron WAL8-09159-0 - - - -
Body and Bushing Steel WAL8-09160-1 - - - -
17 Screen - Steam Monel
®
WAL4-04700-0 B
18 Pressure Plate Cast iron WAL4-03599-0 B
19 Diaphragm Screw Steel WAL4-04822-0 B
20 Pusher Plate Steel WAL4-03717-0 B
21 Valve Spring Inconel
®
WAL5-04985-0 A, B
22 Seat Ring Stainless steel WAL4-04062-0 B
23 Disk Stainless steel WAL4-07283-1 B
24 Stem Nut Steel WAL5-02891-0 B
25 Gasket Asbestos WAL5-02378-0 A, B Note 1
Gasket Flexitalic WAL5-11718-0 A, B Note 2
26 Blind Flange Cast iron WAL4-02151-0 - - - -
Blind Flange Steel WAL4-11678-0 - - - -
27 Blind Flange Bolt Steel WAL5-04803-0 Note 1
Blind Flange Bolt Steel WAL5-11719-0 Note 2
28 Pipe Plug, 1/4 NPT Steel WAL4-03772-0 Not shown
Wall Bracket
29 Wall Bracket Iron WAL4-01028-0 - - - -
30 Diaphragm Bolt Steel WAL5-04781-0 - - - -
10 Diaphragm Nut Steel WAL5-02872-0 - - - -
A - Recommended Spare Parts
B - Furnished in Repair Kit:
WAL8-09154-0 Note 1
WAL8-10356-0 Note 2
Note 1: Applies to Iron Body Pilots
Note 2: Applies to Steel Body Pilots
Table 6. Type D120 Pilot (Figure 6)
Inconel
®
and Monel
®
are marks owned by Special Metals Corporation.
9
D Series
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