Type 2500
32
Figure 21. Typical Relay Assembly
22B0463-B / DOC
APPLY LUB
Key Description Part Number
86* Diaphragm assembly
Standard temperature, nitrile/nylon 18A2451 X012
High temperature, polyacrylate/nylon 18A2451 X092
Corrosive service, nitrile/nylon 18A2451 X042
87* Inner valve, brass
Standard temperature
0Y0617 14012
Corrosive service 0Y0617 X0022
88* Orifice assembly
(1)
(all except Type 2503), brass 12B0468 X012
88 Connector (Type 2503 only), brass 22B0461 X012
90*
O-Ring (2 req’d)
Standard temperature, nitrile
1D6875 06992
High temperature, fluoroelastomer
1N4304 06382
91*
Top diaphragm
Standard temperature, nitrile/nylon
1L5556 02042
High temperature, polyacrylate/nylon 1K6999 X0012
92 Relay spring, pl steel
1C8961 27012
93 Valve spring, stainless steel
0X0836 37022
94* Spring plate gasket
Standard temperature, neoprene
1H2696 03012
High-temperature, silicon
1K7000 04142
Key Description Part Number
95 Spring plate, pl steel
1H2697 25072
96 Machine screw, pl steel (6 req’d) 1A3294 X0022
97 Machine screw, pl steel (4 req’d) 1A8664 X00A2
98 Washer (standard temperature only),
pl steel (6 req’d) 1P8261 X0012
99* Bottom gasket (high-temperature only), silicon
1K7001 04142
100* Top gasket (high-temperature only), silicon
1K7002 04142
168 Lubricant, Lubriplate Mag-1 (not furnished with controller)
169 Lubricant, Dow Corning Compound 111
(not furnished with controller)
--- Relay alignment tool (see figure 18) 15A3519 X012
Heat Insulator (figure 16)
35 Heat Insulator Assembly, stainless steel 22A0033 X012
36 Shaft Coupling, stainless steel
1A5779 35032
37 Shaft extension, alloy K500
1B6815 40022
38 Set screw, stainless steel (2 req’d) 1E6234 X0022
39 Cap screw, pl steel (4 req’d)
1A3816 24052
40 Cap screw, pl steel (4 req’d)
1V2395 28982
53 Washer, carbon steel, pl (4 req’d)
1B8659 28982
For information, contact Fisher Controls:
Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 0512
Printed in U.S.A.
*Recommended spare parts
1. Key 88, orifice assembly, now includes the core assembly. Key 89, core assembly,
has been deleted from the parts list.
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