Australian Pipeline Valve - Installation, Operation and Maintenance Manual
18
API6D THROUGH CONDUIT EXPANDING GATE VALVE - AP400-405 SERIES
8.2.4 Cold Temperature Maintenance
Allowing freezable fluids to be trapped inside the valve will result in damage to the valve when the fluid
freezes.
8.3 ACTUATION
Important: APV recommends that all actuation is installed and calibrated in a controlled testing environment. Utilise
a hydro-test to simulate the targeted operating conditions while setting TRAVEL LIMITS and TORQUE LIMITS.
8.3.1
The APV Expanding gate valve is a “torque seated” design. For proper actuator torque requirements,
please consult with APV.
Note
APV through conduit gate valves are manufactured with ISO standard mounting
plates for manual or automation installations.
Correct actuator calibration is critical for proper valve performance and longevity.
Incorrect TRAVEL LIMIT and TORQUE LIMIT settings can result in catastrophic valve
failure!
Note
0°C is the temperature water will freeze. However, some frozen water hydraulics
generated by fluids frozen solid.
Pressure Exerted By Frozen Fluids
Temperature (C)
Internal Pressure
0°C
101 kPa
-1°C
14,469
kPa
-4°C
48,230
kPa
-7.5°C
87,227
kPa
-12.5°C
138,186
kPa
-15°C
159,262
kPa
-17.5°C
179,850
kPa
NOTE: Eliminate trapped water in your system to avoid system damage
