Excess Flow Valve
High Pressure Series Specifications

Recognized File E75356 
Recognized 73/23/EEC,93/68/EEC
Patent No's 4,637,427; 4,630,799; 4,574,833 Others may apply.

Switch Data
SPST
Hermetically Sealed
Reed Switch
Max Switching Voltage
DC (V) 200
AC (V) 150
Contact Rating
DC (W) 50
AC (VA) 70
Max. Switching Current
DC (A) 1.0
AC (A) 0.7
Leads

SPST
Leads 18 in. min. from body 22 AWG, TFE insulation.

Above values for resistive loads only. For inductive loads, surge current and rush current -- contact protection is required; consult your local representative.

Specifications
Unit Max. Working Pressure
PSIG (BARG)
Wetted Parts Seals
316ss 6000 (413.4) 316ss, Epoxy Viton®

Fluid Ports: Inlet/Outlet Ports - See Calibration Ranges

Temperature Operating Range: 32° to 220° F (0° to 104° C).

Installation: The 250 series may be mounted in any position. 500 and 750 series can be mounted in any position except with the outlet port down. We suggest the unit be calibrated in the attitude in which it will be installed. An actuation point two to three times the normal flow rate should be chosen to avoid the valve actuating from initial pressurization of the system and normal surges. If flow is kept constant, an actuation point 10% above the normal rate may be used.

MODEL WEIGHT
Lbs (Grams)
DIMENSIONS Inches (mm)
    A B C D E
EFV250 1.47 (0.667) 3.75 (149) 1.50 (38) 1.00 (25) 1.00 (25) 1.00 (25)
EFV500 2.625 (1.190) 4.25 (108) 2.00 (51) 1.25 (32) 1.25 (32) 1.37 (35)
EFV750 3.44 (1.560) 5.25 (133) 2.25 (57) 1.25 (32) 1.625 (41) 1.625 (41)

 

How to Order

HPEFV
Model
250
Size
S
Material
PSO
Positive Shut-Off
ES
Electric Switch
OPTIONS
Any of the following options may be added:
250
500
750
S 316ss

Other material available upon request.

Blank for Controlled Bleed Model Normally Open*
O2 Oxygen Cleaned
HT High Temperature Unit
340° F (171° C)
KZ Kalrez® Seals
EPR EPR Seals
Z Special Custom Option
FP Factory Presetting 
(State trip point, 
medium, and line pressure)
Welded Fittings *

* Consult Factory

Note:
All dimensions and specifications are subject to change for quality improvement. Not responsible for typing errors.

Kalrez® and Viton® are registered trademarks of DuPont Dow Elastomers
Teflon® is a registered trademark of E. I. du Pont de Nemours and Company.

 

 

 

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