Filter
Top Products
2
Dimensionally replaces R/S check valve models CK4A-2, -3, -4, -8, and -1. "E" dimension is check valve body outside
edge to outside edge. Flange groove depth: nominal 0.12" each of two; gasket thickness: nominal 0.06" each of two.
*
=
MATERIAL SPECIFICATIONS
Body:
5
/8" thru 1¼": Steel, ASTM A108, zinc chromate
plated
1½" thru 4": Ductile iron, ASTM A536, zinc
chromate plated
Seat Disc: Stainless steel
Seat Cartridge:
5
/8" thru 1¼": Stainless steel, ASTM A582
1½" thru 4": Steel, ASTM A108, zinc chromate
plated
Spring: Stainless steel
Safe Working Pressure: 400 PSIG (27 bar)
Operating Temperature: -60F to 240F (-50 to 115°C)
INSTALLATION
Valve may be located in any position. Arrow on
valve body should match direction of flow. Secure
valve with gaskets between flanges and tighten
bolts evenly. Do not use this valve or any component
to align pipes or tighten gap between flanges.
Do not install on inlet side of solenoid valves or
control valves with electric shut-off or shut-off valves
unless a relief valve is used from therein between
piping. Do not install on
inlet side of outlet pressure
regulators where liquid may become trapped.
Instead, check valves should be located on outlet
side of these valves. Check valves can be close-
coupled to other matching solenoid valves, pressure
regulators, or strainers by using a Male Adapter
Ring and longer bolts supplied when so specified
on order.
INSTALLATION DIMENSIONS
D = Socket Weld Depth
J = Weld Neck
K = ODS Solder
=
5
/8"
A
2.50"
(64 mm)
3.25"
(83 mm)
3.25"
(83 mm)
3.25"
(83 mm)
5.06"
(129 mm)
5.06"
(129 mm)
6.06"
(154 mm)
6.06"
(154 mm)
6.39"
(162 mm)
B
3.19"
(81 mm)
4.50"
(114 mm)
4.50"
(114 mm)
4.50"
(114 mm)
4.56"
(116 mm)
4.56"
(116 mm)
6.00"
(152 mm)
6.00"
(152 mm)
7.13"
(181 mm)
C
3.50"
(89 mm)
4.50"
(114 mm)
4.50"
(114 mm)
4.50"
(114 mm)
6.38"
(162 mm)
6.38"
(162 mm)
7.50"
(191 mm)
7.50"
(191 mm)
8.00"
(203 mm)
D
0.38"
(10 mm)
0.50"
(13 mm)
0.50"
(13 mm)
0.50"
(13 mm)
0.75"
(19 mm)
0.75"
(19 mm)
1.00"
(25 mm)
1.00"
(25 mm)
1.00"
(25 mm)
E
1.03"
(26 mm)
1.22"
(31 mm)
1.22"
(31 mm)
1.22"
(31 mm)
2.56"
(65 mm)
2.56"
(65 mm)
2.92"
(74 mm)
2.92"
(74 mm)
3.50"
(89 mm)
F
1.50"
(38 mm)
2.37"
(60 mm)
2.37"
(60 mm)
2.37"
(60 mm)
3.62"
(92 mm)
3.62"
(92 mm)
4.84"
(123 mm)
4.84"
(123 mm)
6.06"
(154 mm)
G
1.56"
(40 mm)
2.50"
(64 mm)
2.50"
(64 mm)
2.50"
(64 mm)
4.56"
(116 mm)
4.56"
(116 mm)
6.00"
(152 mm)
6.00"
(152 mm)
7.13"
(181 mm)
H
2.19"
(56 mm)
3.12"
(79 mm)
3.12"
(79 mm)
3.12"
(79 mm)
3.06"
(78 mm)
3.06"
(78 mm)
4.00"
(102 mm)
4.12"
(105 mm)
5.00"
(127 mm)
J
3.26"
(83 mm)
4"
(102 mm)
4"
(102 mm)
4"
(102 mm)
6.06"
(154 mm)
6.06"
(154 mm)
7.06"
(179 mm)
7.06"
(179 mm)
9.89"
(251 mm)
K
0.33"
(8 mm)
0.49"
(12 mm)
0.59"
(15 mm)
0.62"
(16 mm)
0.71"
(18 mm)
0.87"
(22 mm)
0.96"
(24 mm)
1.08"
(27 mm)
1.40"
(36 mm)
Valve Cv (Kv) 5.8 (5) 8.2 (7) 11.7 (10) 14.0 (12) 39 (33) 50 (43) 74 (63) 93 (80) 210 (180)
Pipe Size ½", ¾" ¾" 1" 1¼" 1½" 2" 2½" 3" 4"