Attach the pressure-balancing line to the trap and to either the equipment or to an area with a
steam space.
Options for Area B (standard: with plug)
Flange Type (Model: JH7.5R-V)
Operating the Air Vent Valve
Caution
Be sure to use only the recommended components when repairing the product, and NEVER
attempt to modify the product in any way. Failure to observe these precautions may result in
damage to the product and burns or other injury due to malfunction or the discharge of fluids.
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/
closing should be carried out only by trained maintenance personnel.
1. Locate the air vent valve exhaust port before operating the air vent valve, and take care to
avoid being burned by hot air or steam blowing from the vent. The exhaust port is a 2 mm
(
1
/
16
in) diameter hole on the side of the air vent valve body.
DO NOT under any circumstances allow any unprotected part of your body to come in
front of this hole.
2. Never leave an open air vent valve unattended.
Tools required:
• Open-end wrench (distance across flats 17 mm (
21
/
32
in))
• Long-handled mirror to check for steam leakage after closing the exhaust port (leaking
steam cloud the mirror)
Using the open-end wrench, slowly turn the hexagonal head of the valve stem
counterclockwise.
Watch the exhaust port to determine the condition of the fluid discharged. General
guidelines:
• Cloudy: Water droplets and mist spraying out, indicating that air and condensate are
being discharged
• Clear: Indicating that steam is being discharged; the valve port may now be closed
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