172-65173MA-04 (J3B/JF3B) 4 Oct 2021
9
Lock Release Valve
Use gloves when operating the lock release valve and keep all body parts
well clear of the product. Failure to do so could result in burns, other injury
or damage from the blowing of small amounts of steam and condensate.
CAUTION
Use on equipment where steam-locking or air-binding, which slows the discharge of
condensate and reduce equipment efficiency, tends to occur (cylindrical dryers, air fin
heater, etc.).
Operation
1. Remove the cap nut.
2. Loosen the lock nut slightly and screw the valve push rod in 1.5 turns clockwise.
This causes the tip of the valve push rod to come into contact with the air vent
valve plug. Further turning the valve push rod causes the air vent valve to open.
3. Adjust the degree of opening as necessary
(clockwise: increase opening; counterclockwise: decrease opening).
4. After adjustment, be sure to retighten the lock nut.
5. Reattach the cap nut.
NOTE:
1. While use of the lock release valve
eliminates the problem of steam-locking and
improves heat transfer efficiency, a small
amount of steam is lost.
2. When the product is shipped from the
factory, the lock release valve is in the
position indicated in figure right, and does
not operate. To operate, adjust according to
the procedure outlined in the “Operation”
section above.
Tools Required
Part Name
Flat-head screwdriver
(blade thickness: max.1.2 mm (
3
/
64
in))
Valve Push Rod
Wrench
(Distance across flats: 8 mm (
5
/
16
in))
Lock Nut
(Torque 10 N
m (7 lbf·ft))
Wrench
(Distance across flats: 17 mm (
21
/
32
in))
Cap Nut
(Torque 15 N
m (11 lbf·ft))
Cap Nut
Valve Push Rod
Lock Nut
Air Vent
Valve Plug
