Date of Issue: 19 August 2021
Page 12 of 24
QF 80: Issue 2
Parker Hannifin
– Instrumentation Products Division Europe
President Park, President Way, Sheffield,
South Yorkshire, S4 7UR, United Kingdom
Tel: +44 (0) 114 224 0000 Web: www.parker.com/ipd
Globe / Needle Valve (DN10 (⅜”) – DN50 (2”)
Reference Number:
IOM 002
Date:
20 May 2014
Issue:
B
Torque Table
•
Apply torques across corners with a final tightening to avoid collar being set
incorrectly in socket.
•
Only use PTFE based lubricants.
•
Torque specified is for lubricated Stainless Steel fasteners.
•
On Cryogenic applications, ONLY use specified Stainless Steel fasteners.
•
Torques specified for valves with PTFE body / bonnet gaskets.
Installation Method
*
PLEASE NOTE:
The preferred orientation of the valve is vertical. If the valve has to be
installed at an angle, it should not be less than 30° from the horizontal.
Progressively slacken the bonnet bolts in sequence to preserve conditions of internal
gasket.
Remove the headwork before installation and cover the top of the body to protect the
internals of the valve from particulate contamination. Fully open the valve before removing
the headwork and remember to keep clean i.e. place in original bag and protect the
exposed PTFE face.
Valve Size
Disc Retaining Nut
Gland Nut
Bolted Bonnet
Union Nut
DN6 (
¼
“)
M5
2.5 NM (1.8 lb.ft)
16 NM (12 lb.ft)
M8
16 NM (12lb.ft)
48 NM (35 lb.ft)
DN10 (
3/8
“)
DN15 (½“)
DN20 (¾“)
M6
5 NM (3.7 lb.ft)
M10
32 NM (24 lb.ft)
54 NM (40 lb.ft)
DN25 (1”)
M8
12 NM (8.8 lb.ft)
68 NM (50 lb.ft)
DN40 (1½“)
M10
20 NM (14.7 lb.ft)
32 NM (24 lb.ft)
M12
57 NM (42 lb.ft)
150 NM (111 lb.ft)
DN50 (2”)
M12
37 NM (27 lb.ft)
M16
120 NM (90 lb.ft)
305 NM (225 lb.ft)
