172-65587MA-02 (CV-COSR Pneumatic Control Valve) 3 Jun 2019
17
Removing/Reattaching the Cover Plug and Cover
Part
15
– 25 mm 40, 50 mm
During Disassembly
During Reassembly
Drain Plug*
Remove with an appropriate
tool; be careful of residual
fluid flowing out from inside
the body
Wrap threaded portion with
sealing tape; consult the
table of tightening torques
and tighten to the proper
torque
Cover Plug
Uses a screwed connection;
remove with an appropriate
tool
Consult the table of
tightening torques and
tighten to the proper torque
Cover
Remove cover bolts with an
appropriate tool
Consult the table of
tightening torques and
tighten cover bolts to the
proper torque
Cover Plug
Gasket
Remove the gasket and
clean sealing surfaces
Replace with a new gasket if
warped or damaged
*When a steam/air trap or blow valve is connected to the bottom of the body, piping
connected to the steam/air trap or the blow valve should be removed.
15
– 25 mm
40, 50 mm
Body
Cover Plug Gasket
Cover Plug
Cover
Cover Bolt
Drain Plug
Disassembling/Reassembling the Gland and its Components
In the procedure below, first partially loosen the guide bushing and then remove the
valve plug & stem before removing the other parts. (The procedure is most easily
performed if the bushing is loosened while it is attached to the valve body.)
Part
During
Disassembly
During Reassembly
Guide
Bushing
Stuffing Box
Washer
Stuffing Box
Spring
Valve Bonnet
Stuffing Box
V-rings
BLK
BLK
WHT
BLK
BLK
Sectional View of
Stuffing Box V-rings
Guide
Bushing
Remove with a
socket wrench
Consult the table of
tightening torques and
tighten to the proper torque
Stuffing Box
V-rings
Pull up and out
Make sure to reassemble the
V-rings in the proper
orientation; coat the groove
with heat-resistant silicon
grease; reattach the V-rings
with their grooves facing
downward
Stuffing Box
Washer
Pull up and out
Reinsert
Stuffing Box
Spring