Bulletin 51.1:EU Table 1. Construction Materials PART
TEMPERATURE
MATERIAL WCC Steel WC9 Steel CF8M (316 Stainless Steel) See tables 2 and 3
Valve Body and Bonnet Cage, Seat Ring, and Valve Plug
F
C
–20 to 800 –29 to 427 –20 to 1100 –29 to 593 –325 to 1000 –198 to 593 See figures 5 and 6
Soft Metal Seat (with trim 233 in Design EUT-2 and EWT-2 valves only)
CF8M
See figures 5 and 6
Valve Stem
S31600 (316 SST) or S20910 SST
Not a Limiting Factor
SA-193-B7 Studs
WCC Valve
–20 20 to 800
–29 29 to 427
–20 20 to 1050
–29 29 to 565
–50 50 to 800
–46 46 to 427
–20 to 700 –325 to 1100
–29 to 354 –198 to 593
Oxidizing
–325 to 800
–198 to 427
Non-Oxidizing
–325 to 1100
–198 to 593
Oxidizing
–325 to 1000
–198 to 538
Non-Oxidizing
–325 to 1100
–198 to 593
–100 to 450
–73 to 232
PTFE V-Ring
0 to 450
–18 to 232
PTFE Composition
0 to 450
–18 to 232
Oxidizing
0 to 700
–18 to 354
Non-Oxidizing
0 to 1000
–18 to 538
SA-194-2H Nuts SA-193-B16 Studs
Valve to Bonnet Bolting WC9 Valve Valve-to-Bonnet
SA-194-7 Nuts SA-193-B7 Studs
CF8M Valve
SA-194-2H Nuts
Seat Ring Cap Screws
S17400 (17-4PH SST) N07718 (Inconel 718)
Bonnet Seat Ring, Bonnet, Ring and Cage Gaskets
Inconel/Graphite
Design EUD and EWD Piston Ring
Graphite (Fisher Controls Designation FMS 17F39)
Design EUT, EWT, EUT-2, and EWT-2 Seat Ring Hastelloy C/Glass and Moly-Filled PTFE Seal Ring Packing (Tem (Temperatures eratures shown are in in-body body temperatures with plain bonnet.))
Packing Flange, Flange Studs, Studs and Nuts
Gra hite Graphite Ribbon/Filament Steel
S31600 (316 Stainless Steel)
–20 to 800
–29 to 427
–325 to 1100
–198 to 593
Packing Follower, Spring (PTFE V-Ring Packing), S31600 or Lantern Ring Packing Box Ring
Not a Limiting Factor
S17400
–150 to 800
–101 to 427
S31600
–325 to 1100
–198 to 593
Table 2. Trim Materials for Designs EUT-2 and EWT-2 Trim Designation 231A 232 233(1) 1. For soft metal seat only.
6
Valve Plug
Seat Ring
Cage
CF8M (316 SST) with CoCr-A on Seat and guide CF8M (316 SST) with CoCr-A on Seat and guide CF8M (316 SST) with CoCr-A on Seat and guide
CB7CU-1 (17-4 PH SST) H1075
CB7CU-1 H1075
CF8M with C0Cr-A on seat
CF8M ENC (Electroless Nickel Coated)
CF8M
CF8M ENC
Temperature
See figure 5