Ductile Iron Check Valve

• Bronze stemmed poppet
• Female threads

Sizes 1” - 2” are VFD Compatible

Part No.

8RD Thread

Size

Weight lbs

653SB
654SB
655SB
680SB
669SB
670SB
681SB
671SB
674SB
672SB
683SB
673SB
689SB

-
-
-
-
-
-8RD
-
-8RD
-8RD
-8RD
-
-8RD
-8RD

1
1 1/4
1 1/2
2
2 1/2
3
3*
4
5
6
6
8
10

1.2
1.7
2.2
3.9
15.1
12.2
13.1
25.6
36.5
48.7
65
63.7
110.0

All Simmons ductile iron check valves are CERTIFIED LEAD FREE, featuring an ASTM A536 ductile iron body with non-toxic polyester powder coated finish. Each valve is furnished with Buna-N O-Ring, stainless steel spring, stainless steel washer, and stainless steel locknut. All valves ¾” through 1 ½” have a working pressure of 400 PSI, while valves 2” and larger have a working pressure of 600 PSI. Check valves rated for 190°F maximum temperature.

* High Flow Design

Flow charts

certification

warranty