Excess Flow Valves Excess Flow Valves - Low Pressure Drop Applications* Designed for mounting in half or full couplings in container applications. The exceptionally low pressure drop makes them ideal for pump suction lines. When used with a riser pipe, caution must be used so the side ports of the valve are not restricted. Approximate Closing Flows Vapor SCFH (Propane)
For Use With This Type Coupling
Inlet Connection MNPT
Outlet Connection NPT
Liquid (GPM Propane)
25 PSIG Inlet
100 PSIG Inlet
A8523
Half
3/4”
3/4” MNPT
15
5,170
8,800
A8525
Half
1-1/4”
1-1/4” MNPT
35
12,540
21,560
A7537L4
Half
A7537L4F
Full
A7537N4
Half
A7537N4F
Full
A7537P4
Half
A7537P4F
Full
A7539R6
Half
A7539R6F
Full
A7539T6
Half
A7539T6F
Full
A7539V6
Half
A7539V6F
Full
Part Number
75
2”
3”
2” MNPT and 1-1/4” FNPT
3” MNPT and 2” FNPT
13,000
25,600
125
25,000
150
30,500
150
32,100
55,500
200
39,400
68,300
A7539V6
42,500
52,000
A7539V6F 250
51,100
88,700
*Very important for pump suction lines where head is at a premium. As an example, the A7539 3” Series excess flow valves produce only a .47 PSI drop at 130 GPM propane. A comparable competitive valve produces 2 PSI drop at the same flow rate.
Chek-Lok Valves
Chek-Lok excess flow valves are designed to provide a convenient means of withdrawing liquid from stationary containers prior to moving the container. Part Number
Inlet Connection
7590U
3/4” MNPT
7591U
1-1/4 MNPT
Outlet Connection 1-5/8” UNF
Liquid LP-Gas Closing Flow 20 GPM 35 GPM
Use With Adapter
7550P
Old Style Adapters
7590U-10 7572C-14A
7590U-10
7590U or 7591U 7590U
7572C-15A
7590U-10
48