Appendix D—Valve Assembly Details (HG600/THG600 Series)
Ref .
No .
Description
Cylinder Diameter
6"
(15+ psi suction pressure)
6"
(0 to 15 psi suction pressure)
8"
(15+ psi suction pressure)
8"
(0 to 15 psi suction pressure)
Part No .
Qty . per
Cylinder
Part No .
Qty . per
Cylinder
Part No .
Qty . per
Cylinder
Part No .
Qty . per
Cylinder
1.
Suction valve
assembly
b
3856-5X
(aluminum)
e
4
3856-3X
(aluminum)
4
3710-X
(aluminum)
4
3710-X
(aluminum)
4
3856-5X2
(steel)
4
3856-3X2
(steel)
4
3710-X2 (steel)
4
3710-X2 (steel)
4
2.
Discharge valve
assembly
b
3857-5X
(aluminum)
4
3857-3X
(aluminum)
4
3709-X
(aluminum)
4
3709-X
(aluminum)
4
3857-5X2
(steel)
4
3857-3X2
(steel)
4
3709-X2
(steel)
4
3709-X2
(steel)
4
3.
Valve seat
3856
4
3856
4
3834
2
3834
2
4.
Stud
c
3920
4
3920
4
3828
2
3828
2
5.
Valve plate
(inner)
a
3872
4
3872
4
3837
2
3837
2
6.
Valve plate (outer)
a
3871
4
3871
4
3836
2
3836
2
7.
Valve bumper
3857
4
3857
4
3833
2
3833
2
8.
Spring button
a
—
—
3835
4
3835
4
9.
Spring (inner)
a
3929
4
3951 (suction)
3929 (discharge)
4
3829
4
3818 (suction)
2
—
—
—
—
3829-1
(Inconel opt.)
4
3829
(discharge)
2
Spring (outer)
a
3928
4
3993 (suction)
3928 (discharge)
4
—
—
—
—
10.
Repair kit
3146-X1
4
—
4
3806-X1
2
3806-1X1
2
11.
Blank
d
3768
2
3768
2
3769
2
3769
2
4", 5", 6" Valve
8" Valve
Suction
Discharge
3
4
c
5
6
9
7
7
4
c
5
6
9
3
9
9
6" Only
6" Only
Suction
Discharge
3
4
c
5
6
8
9
7
7
4
c
5
6
9
8
3
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