BW Series valves are actuated by a solenoid pilot, using an internal bleed. The BW Series use a floating diaphragm to prive the seal for the main orifice. The pressure within the valve is utilized to open and close the diaphragm. A small pressure drop across the main orifice is require to keep the diaphragm in the open position.
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Item #

Body Material

Type

Pipe Size

Cv

Kv

6BW2 N/A Brass N/A Normally Closed N/A 1/4 in6 mm N/A 1.1 N/A 0.95
10BW2 N/A Brass N/A Normally Closed N/A 3/8 in10 mm N/A 2.1 N/A 1.81
12BW2 N/A Brass N/A Normally Closed N/A 1/2 in12 mm N/A 3.5 N/A 3.01
20BW2 N/A Brass N/A Normally Closed N/A 3/4 in20 mm N/A 7.7 N/A 6.62
25BW3 N/A Brass N/A Normally Closed N/A 1 in25 mm N/A 13.2 N/A 11.18
40BW2 N/A Brass N/A Normally Closed N/A 1 1/2 in40 mm N/A 24.0 N/A 20.64
6QW2 N/A Brass N/A Normally Closed N/A 1/4 in6 mm N/A 1.1 N/A 0.95
10QW2 N/A Brass N/A Normally Closed N/A 3/8 in10 mm N/A 2.1 N/A 1.81
12QW2 N/A Brass N/A Normally Closed N/A 1/2 in12 mm N/A 3.5 N/A 3.01
6BWJ2 N/A Brass N/A Normally Closed N/A 1/4 in6 mm N/A 1.1 N/A 0.95
10BWJ2 N/A Brass N/A Normally Closed N/A 3/8 in10 mm N/A 2.1 N/A 1.81
12BWJ2 N/A Brass N/A Normally Closed N/A 1/2 in12 mm N/A 3.5 N/A 3.01
20BWJ2 N/A Brass N/A Normally Closed N/A 3/4 in20 mm N/A 7.7 N/A 6.62
25BWJ3 N/A Brass N/A Normally Closed N/A 1 in25 mm N/A 13.2 N/A 11.18
6QWJ2 N/A Brass N/A Normally Closed N/A 1/4 in6 mm N/A 1.1 N/A 0.95
10QWJ2 N/A Brass N/A Normally Closed N/A 3/8 in10 mm N/A 2.1 N/A 1.81
12QWJ2 N/A Brass N/A Normally Closed N/A 1/2 in12 mm N/A 3.5 N/A 3.01
12BW2-NO N/A Brass N/A Normally Open N/A 1/2 in12 mm N/A 3.5 N/A 3.01
20BW2-NO N/A Brass N/A Normally Open N/A 3/4 in20 mm N/A 7.7 N/A 6.62
25BW3-NO N/A Brass N/A Normally Open N/A 1 in25 mm N/A 13.2 N/A 11.18
40BW2-NO N/A Brass N/A Normally Open N/A 1 1/2 in40 mm N/A 24.0 N/A 20.64
10BW2-EUBNA6281 N/A Brass N/A Normally Closed N/A 3/8 in10 mm N/A 2.1 N/A 1.81
12BW2-EUBNA6281 N/A Brass N/A Normally Closed N/A 1/2 in12 mm N/A 3.5 N/A 3.01
20BW2-EUBNA6281 N/A Brass N/A Normally Closed N/A 3/4 in20 mm N/A 7.7 N/A 6.62
25BW3-EUBNA6281 N/A Brass N/A Normally Closed N/A 3/4 in20 mm N/A 7.7 N/A 6.62
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