Vp526 Three-Way High Pressure Water Valve - Honeywell Pneumatic Controls Engineering Manual

VP526 Three-Way High Pressure Water Valve

Dimensions in inches (millimeters)
CLEARANCE REQUIRED
TO SERVICE VALVE
1-1/2 (38)
1
MIN.
2-1/4 (57) DIA.
1-5/8
(41)
A
D
E
F
G
H
MINIMUM FOR
REMOVAL OF VALVE
COPPER
IN. (MM)
TUBING
VALVE
(O.D.) A B C
SIZE
3/8 1/2 3-1/16 7/8 13/16 1-1/2
(78) (22) (20) (38)
1/2
5/8 3-3/8 1-3/16 7/8 1-3/4
(85) (30) (22) (44)
ALLOW 1-1/2 IN. (38 MM) MINIMUM CLEARANCE FOR REMOVING
1
ACTUATOR. ALLOW 2-1/2 IN. (63 MM) TO FACILITATE STRAIGHT ON
TUBING. IF CLEARANCE IS LESS THAN 2-1/2 IN. (63 MM), USE
AN ELBOW.
AIR CONNECTION
FOR 1/4 IN. (6 MM)
O.D. PLASTIC TUBING
B
C
D E F G H
3/8 1-1/2 3 5-3/4
(10) (38) (76) (146)
7/16 1-11/16 3-7/16 6-1/4
(11) (43) (87) (159)
M18807A
Three-way pneumatic mixing valve provides proportional control
of hot and/or cold water in unit air conditioners and fan coil
systems. Replacement devices are available for Johnson, Powers,
Robertshaw, Barber-Colman, and older Honeywell devices.
• Small size permits installation where space is limited.
• Direct-acting, rolling diaphragm actuator with integral high
temperature plastic air connector for 1/4 in. (6-mm) O.D. plastic
tubing.
• Spring loaded, self-adjusting Buna-N "V"-ring packing replaceable.
• Brass seats (integral lower, removable upper) and contoured plug
provide metal-to-metal seating.
• Stainless steel stem.
• Linear and constant total flow throughout full plug travel.
VP526 Typical Piping Diagram
CONTROL AIR
VP526A
SUPPLY
A
COIL
AB
B
Close-off Ratings for the VP526
PORTS B A B A B A
5 2 10 3 11 8
6 1 11 2 12 7
7 0 12 1 13 6
8
— 13 0 14 5
9 — 14 — 15 4
10 — 15 — 16 3
11 — 16 — 17 2
12 — 17 — 18 1
13 — 18 —
— 0
14 — — — — —
CLOSE OFF PRESSURE RATING, PSI (kPa)
(DIFFERENTIAL PRESSURE BETWEEN
SUPPLY AND RETURN LINES)
Valve Type: Unitary
Body Pattern: Three-way Mixing
Body Pressure: 250 psi (1724 kPa)
Air Connections: Push on for 1/4 in. O.D. plastic tubing
Valve Action: Proportional Normally Open Ports B to AB
Controlled Medium: Water
Type of End Connection: 45 deg. SAE flare
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: 35 F to 250 F (2 C to 121 C)
Maximum Safe Actuator Diaphragm Temperature: 230 F (110 C)
Maximum Diaphragm Pressure: 29 psi (200 kPa)
70-6925
Valves
N. O. PORTS
B TO AB
RETURN
C2726
ALL C s
V
0 10 20 30 40 50 60 70
(69) (138) (207) (276) (345) (414) (483)
C493-1
103