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PRESSURE RELIEF VALVES
ASME NB CERTIFIED CAPACITIES
CONFORMS TO ANSI/ASHRAE 15 REFRIGERATION CODE
TYPES 52, 523, 524, & 525
TYPE 52
ANGLE
SETTING RANGE:
150-450 P.S.I.
TYPE 523
STRAIGHT-THROUGH
SETTING RANGE:
150-450 P.S.I.
C
TYPE 524 & 525
STRAIGHT-THROUGH
SETTING RANGE:
150-450 P.S.I.
A
A
B
INLET
INLET
INLET
CAPACITY (POUNDS OF AIR/MINUTE)
TYPE
CATALOG
NUMBER
SIZE CONNECTION
INLET
OUTLET
3/8 MPT
3/8 FL
1/2 MPT
5/8 FL
1/4 MPT
3/8 FL
3/8 MPT
1/2 FL
**526E
**527E
**5230
**5231
*5231-A
*523
*5231-B
1/2 MPT
5/8 FL
*5232
*5232B
1/2 MPT
1/2 FPT
5244-3/4
3/4 MPT
1 FPT
5244-1
1 MPT
524
5246A-1
1 MPT
1-1/4 FPT
5246A-1-1/4 1-1/4 MPT 1-1/4 FPT
5250A-1/2
1/2 MPT
1/2 FPT
525
5250-1/2
1/2 MPT
3/4 FPT
5252-3/4
3/4 MPT
**52
DIMENSIONS IN INCHES
A
B
C
ORIFICE
2.96
1.41
.25
3.81
1.72
.44
3.16
3.28
3.58
4.00
4.00
4.16
5.82
5.82
4.26
4.04
4.05
STANDARD PRESSURE SETTINGS P.S.I.G.
235
300
350
400
425
450
7.6
9.6
11.2
12.7
13.5
14.3
19.2
24.2
28.1
32.0
33.9
35.8
7.6
9.6
11.2
12.7
13.5
14.3
12.7
16.0
18.6
21.1
22.4
23.7
.44
19.2
24.2
28.1
32.0
33.9
35.8
.50
50.6
63.8
74.0
84.2
89.3
94.4
.719
107.2 135.2 156.8 178.4
N/A
N/A
.38
29.0
51.1
54.0
.25
36.5
42.4
48.2
NOTES:
1. BRASS CONSTRUCTION, SET AND SEALED AT THE FACTORY. ALL N.P.T.F. CONNECTIONS ARE AMERICAN
STANDARD DRYSEAL TAPERED PIPE THREADS.
2. VALVES ARE STAMPED WITH CATALOG NUMBER, SIZE, PRESSURE SETTING, CAPACITY, AND ASME-UV
NATIONAL BOARD SYMBOL.
3. ORDERS MUST SPECIFY CATALOG NUMBER, PRESSURE SETTING AND TYPE OF REFRIGERANT OR FLUID WITH
WHICH THE VALVE IS TO BE USED.
4. SUITABLE FOR REFRIGERANTS AND OTHER INDUSTRIAL FLUIDS NON-CORROSIVE TO BRASS, STEEL, AND TEFLON
AT TEMPERATURES BETWEEN -40 F,(-40 C) AND +125 F, (+107 C).
5. TO CONVERT POUNDS OF AIR PER MINUTE TO STANDARD CUBIC FEET PER MINUTE MULTIPLY #AIR/MIN X 13.3.
6. * - OBSOLETE VALVES; ** - OBSOLETE VALVES, NO REPLACEMENT
7. 5231-A REPLACEMENT VALVE IS 5231AX; 5232 REPLACEMENT VALVE IS 5231BX: SEE SP121
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
HENRY TECHNOLOGIES. ANY
REPRODUCTION IN PART OR AS A WHOLE
WITHOUT THE WRITTEN PERMISSION OF
HENRY TECHNOLOGIES IS PROHIBITED.
PRESSURE RELIEF VALVES
DWG. NO.
REV.
SP 116
NOT TO SCALE
WEIGHT: 0.549 LBS
DD
SHEET 1 OF 1