Data Sheet

A31A Cryogenic Valve
Product Bulletin
21.1:Cryogenic-Rotary
October 2010
6
Table 2. Material Temperature Ratings
COMPONENT AND MATERIAL OF CONSTRUCTION TEMPERATURE RANGE
_C _F
Valve Body
CF8M (316 SST) CL150 and 300 254 to 260 –425 to 500
Disc
CF8M (316 SST) 254 to 260 –425 to 500
Disc Coating
Hard Coating
(1)
254 to 260 –425 to 500
Shaft
S17400 H1150M (standard)
N05500
N07718
196 to 260
198 to 260
254 to 260
–320 to 500
325 to 500
425 to 500
Bearings
PTFE Composition Rexnord (standard)
Bronze
254 to 163
254 to 260
–425 to 325
–425 to 500
Packing
PTFE Packing (standard)
Graphite
254 to 232
254 to 260
–425 to 450
425 to 500
Seal Ring
NOVEX S31600 Seal Ring (CL150) (standard)
NOVEX S21800 Seal Ring (CL300) (standard)
254 to 260
254 to 260
425 to 500
425 to 500
CTFE Cryogenic Seal Ring 254 to 149 425 to 300
1. The material for hard coating on the disc is either hard chrome plating or Electroless Nickel Coating (ENC) depending upon availability.
PACKING
FLANGE
ANTI-BLOWOUT
FLANGE
SHAFT SHOULDER
SHAFT
HEX NUT
STUD
PACKING
FOLLOWER
HEX NUT
TYPICAL PTFE
V-RING
PACKING
A7090
SHAFT
STUD
HEX NUT
PACKING
FOLLOWER
V-RING PACKING
OUTBOARD
BEARING
PACKING RING
ANTI-BLOWOUT
SHAFT SHOULDER
NPS 3 THROUGH 12 NPS 14 THROUGH 24
16B5082
Figure 5. Anti-Blowout Protection