
Bulletin 74.2:Y695A
7
Installation
Install the regulator using a straight run of pipe the
same size or larger as the regulator body. Flow
through the regulator body is indicated by the ow
arrow on the body. If a block valve is required, install a
full ow valve between the regulator and the blanketed
vessel. For proper operation at low setpoint ranges,
the regulators should be installed with the spring case
pointed down.
BODY SIZE,
NPS (DN)
DIMENSIONS, INCHES (mm)
A B D F G
Iron
Stainless
Steel or
Hastelloy
®
C
Ductile
Iron
Stainless
Steel or
Hastelloy
®
C
Ductile
Iron
Stainless
Steel or
Hastelloy
®
C
Ductile
Iron
Stainless
Steel or
Hastelloy
®
C
Ductile
Iron
Stainless
Steel or
Hastelloy
®
C
3/4,1 (20, 25) 4.0 (102) 4.12 (105) 2.12 (54) 2.25 (57) 6.19 (157) 6.19 (157) 10.38 (264) 10.38 (264) 1.69 (43) 1.69 (43)
Figure 3. Dimensions
G F
D
8.38
(213)
DIAMETER
A
B
5.56
(141)
INCHES
(mm)
14
(356)
B2441
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