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70-6925
107
VP531C Pneumatic Terminal Unit Valve
Normally-open, single-seated valve provides proportional control
of steam or hot or cold water in terminal units. Replacement
devices are available for Johnson, Powers, Robertshaw, Barber-
Colman, and older Honeywell devices.
•
Available in several capacities and spring ranges for various
application requirements.
•
Easily replaceable actuator assembly for convenience of service.
•
Compact size for use inside most unit enclosures.
Dimensions in inches (millimeters)
VP531C Typical Piping Diagram
Close-off Ratings for the VP531C
Valve Type:
Unitary
Body Pattern:
Two-way
Body Pressure:
150 psi (1034 kPa)
Air Connections:
Push on for 1/4 in. O.D. plastic tubing
Valve Action:
Proportional Normally Open
Controlled Medium:
Water; Steam
Operating Humidity Range (% RH):
5 to 95% RH
Temperature Range:
40 F to 240 F (140 F max difference, alternating
hot and cold water service)
(4 C to 116 C (78 K max difference, alternating hot and cold water
service))
Maximum Safe Actuator Diaphragm Temperature:
230 F (110 C)
Maximum Diaphragm Pressure:
30 psi (205 kPa)
Accessories:
14003648-001
Vandalism Resistant Assembly, Cover assembly with 1/
8 in NPT air Connection and push-in retainer to replace standard
Cover
14004932-001
Pneumatic Valve Adapter (M6410/M7410 linkage and a
green main spring to allow to retrofit an electric actuator)
A
D
C
C
2-1/4 (DIA)
(54)
AIR CONNECTION FOR
1/4 IN. (6 mm) O.D. TUBING
1-1/2
(38)
B
A
1
(25)
3-1/2
(89)
NPT THREADED BODY
SOLDER BODY
1-1/2
(38)
MINIMUM
CLEARANCE
FOR
SERVICING
VALVE
REUSABLE COPPER
RING SEAL FOR
BONNET NUT
C7987B
BODY SIZE
A
B
C
D
1/2 IN. NPT
1/2 IN. PIPE
4-1/8 IN.
2-9/32 IN.
–
(1.6 OR 2.3 CV)
(104 MM)
(58 MM)
3/4 IN. NPT
3/4 IN. PIPE
4-3/16 IN.
2-7/16 IN.
–
(2.6 OR 3.3 CV)
(106 MM)
(61 MM)
1/2 IN. SOLDER
5/8 IN. (16 MM) O.D.
4-1/8 IN.
1-5/8 IN.
1/2 IN.
(1.6 CV)
COPPER TUBING
(104 MM)
(41 MM)
(13 MM)
3/4 IN. SOLDER
7/8 IN. (22 MM) O.D. 4-3/16 IN.
1-1/2 IN.
3/4 IN.
(2.6 OR 3.3 CV)
COPPER TUBING
(106 MM)
(38 MM)
(19 MM)
M5441
N.O.
STEAM OR
WATER
SUPPLY
CONTROL AIR
VP531A,C CLOSE-OFF AT
MAXIMUM SYSTEM PRESSURE
3-10
2-5
CONTROL
AIR PRESSURE psi (kPa)
20
(138)
15
(103)
18
(124)
13
(90)
11
(76)
9
(62)
7
(48)
16
(110)
14
(97)
12
(83)
ACTUATOR
SPRING RANGE
psi (kPa)
0
(0)
20
(138)
40
(276)
60
(414)
80
(552)
100
(689)
DIFFERENTIAL PRESSURE CLOSE OFF RATINGS
psi (kPa)
120
(827)
140
(965)
C7715A
28
(193)
23
(159)
26
(179)
21
(145)
19
(131)
17
(117)
24
(165)
22
(152)
30
(207)
25
(172)
VP531A
VP531C
Содержание VP525C
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