Valve Proving Systems

VPS 504
Valve proving system for double solenoid valves (DMV)

max. operating pressure p₁: 7 PSI
test volume:.....0.14 cft
sensitivity limit:.....<2.0 cft/hr
test cycle:.....approx. 10 to 30 s
ambient temperature:.....+5 to +140°F (-15 to +60°C)

VDK 200 A
Valve proving system for use with gas trains with two safety shut off valves

max. operating pressure p₁: 5 PSI
test volume:.....0.71 cft
sensivity limit:.....<2.0 cft/hr
test cycle:.....approx. 32 s
ambient temperature: +14 to +140°F (-10 to +60°C)
CM 100 Control module (not shown); use when checking on start and shut down is required.

GMH locks out and indicates when the pressure exceeds the set-point.
GML locks out and indicates when the pressure is below the set-point.

 
G...-A2-4...Pressure Switches are to be used on double solenoid valves.

ambient temperature: -40 to+140°F (-40 to +60°C)
enclosure: NEMA 4, indoor use only
switch rating: SPDT 10A @ 120VAC
visual indication: neon light

Gas pressure switch set-point ranges:
0.16 to 1.20" wc, 0.40 to 4.00" wc,
2.00 to 20.00" wc, 12.00 to 60.00" wc,
40.00 to 120.00" wc
GMH and GML are with manual reset.

AA-A2-...dial adjustable set-point;
ambient temperature: -40 to 140°F (-40 to +60°C)

AA-A2 set-point ranges:
0.16 to 1.20" wc, 0.40 to 4.00" wc,
2.00 to 20.00" wc, 12.00 to 60.00" wc

AA-C2-...Dial adjustable set-point;
ambient temperature: +5 to +140°F (-15 to +60°C)

AA-C2 set point-ranges: 
0.08 to 0.60" wc, 0.16 to 1.20" wc,
0.40 to 4.00" wc

AA-A2-...and AA-C2...
enclosure: NEMA 4, indoor use only;
switch rating: SPDT 10A @ 120 VAC

AA-A1-...adjustable set-point via screw (requires manometer or equivalent to adjust)

AA-A1-...setpoint rangs same as AA-A2