Emerson Fisher POSI-SEAL A31A Instruction Manual page 7

Instruction Manual
D500240X012
Figure 2. Maximum Pressure/Temperature Ratings
OPERATING TEMPERATURE, _C
OPERATING TEMPERATURE, _F
CL150, SOFT SEAL
B2335-2
NOTE
1
BECAUSE OF POTENTIAL EROSIVE EFFECTS AND PREMATURE SEAL FAILURE THAT CAN OCCUR, THROTTLING PTFE SEALS AT DIFFERENTIAL PRESSURES GREATER THAN 300 PSID AT DISK ANGLES
LESS THAN 20 DEGREES OPEN IS NOT RECOMMENDED.
2
TEMPERATURE LIMITATIONS DO NOT ACCOUNT FOR THE ADDITIONAL LIMITATIONS IMPOSED BY THE BACKUP RING USED WITH THIS SEAL TO DETERMINE THE EFFECTIVE TEMPERATURE
LIMITATION OF THE APPROPRIATE SEAL/BACKUP RING COMBINATION, REFER TO TABLE 3.
OPERATING TEMPERATURE, _F
OPERATING TEMPERATURE, _C
S31600 SST
OPERATING TEMPERATURE, _F
CL150, NOVEX SEAL
OPERATING TEMPERATURE, _C
S21800
S31600 SST
OPERATING TEMPERATURE, _F
CL300, NOVEX SEAL
OPERATING TEMPERATURE, _C
CL300, SOFT SEAL
A31A Valve
February 2019
7