Spirax Sarco DCV4, Installation And Maintenance Instructions Manual

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IM-P134-08 CMGT Issue 10 6
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TRANSLATION RUN OVER
2.4 Materials
Part Material
Body Austenitic stainless steel
Disc Austenitic stainless steel
Spring retainer Austenitic stainless steel
Standard spring
Austenitic stainless steel
High temperature spring Nickel alloy
2.5 Seating options
The valves are stamped to identify the internals fitted:
'N'
- High temperature spring - Metal disc seat
'W'
- Without spring - Metal disc seat
'V' - Standard spring - Viton disc seat
'E' - Standard spring - EPDM disc seat
'WV' - Without spring - Viton disc seat
'WE' - Without spring - EPDM disc seat
'T'
- Valves tested to EN 12266-1 Rate D
No identification indicates a standard spring with a metal disc.