Honeywell VP512 Catalog Page
Pneumatic Valves
VP512 Unit Vent Pneumatic Control Valve
A normally open, single seated, straight-through or angle globe valve used for proportional control of steam or hot water in unit ventilator applications. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.
• Equal percentage, high lift throttling guide provides accurate control over wide load variations.
• Molded replaceable composition disc for tight shut-off.
• Replaceable brass seat.
• Self-adjusting, spring-loaded Teflon® packing.
• Back-seating allows repacking without shutting down or draining system.
• Rotatable actuator for aligning air connection with control air piping.
• Integral union connection to simplify installation and service.
Valve Type: Globe Valve Body Pressure: 150 psi
Air Connections: Dual barbed for 5/32 in. or 1/4 in. plastic tubing Valve Action: Proportional Normally Open
Controlled Medium: Steam; Water
Type of End Connection: Outlet - External NPT Union; Inlet - Internal NPT
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: For Water: 115 F to 240 F; For Steam: 212 F to 275 F
Maximum Temperature Differential: For Water: 140 F Maximum Actuator Temperature: 160 F
Maximum Diaphragm Pressure: 25 psi (172 kPa)
Accessories:
312817AA-Actuator Assembly, 3 to 8 psi, 21 to 55 kPa, and 1/2 in. stroke.
312817AB-Actuator Assembly, 6 to 11 psi, 41 to 76 kPa and 1/2 in. stroke.
Replacement Parts:
14002863-001-Valve rebuild kit for 3/4 to 1 1/4 in valves with Cv of 6.3 or 10
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End Connection |
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Close-off |
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Size |
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Capacity |
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Ratings at |
Spring Range |
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Branch Line |
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Product Number |
(inch) |
(mm) |
(Cv) |
(Kv) |
Pressure |
(psi) |
(kPa) |
Body Pattern |
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VP512A1726/U |
1 in. |
25 mm |
10 Cv |
8.57 Kv |
78 psi at 13 psi |
3 psi to 8 psi |
21 kPa to 55 kPa |
Two-way, Straight-through |
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VP512A1742/U |
1 in. |
25 mm |
10 Cv |
8.57 Kv |
78 psi at 13 psi |
3 psi to 8 psi |
21 kPa to 55 kPa |
Two-way, Right Angle |
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VP512A1767/U |
1 1/4 in. |
32 mm |
16 Cv |
13.7 Kv |
40 psi at 13 psi |
3 psi to 8 psi |
21 kPa to 55 kPa |
Two-way, Straight-through |
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VP512A1783/U |
1 1/4 in. |
32 mm |
16 Cv |
13.7 Kv |
40 psi at 13 psi |
3 psi to 8 psi |
21 kPa to 55 kPa |
Two-way, Right Angle |
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Close-off Ratings at various Branchline Pressures
| <![if ! IE]> <![endif]>(21PSI8TO3WITHBLPTO 55 kPa) SPRING RANGE |
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(55) |
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<![if ! IE]> <![endif]>(41PSI11TO6WITHBLPTO 76 kPa) SPRING RANGE |
<![if ! IE]> <![endif]>Pneumatic Controls |
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11 (76) |
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(62) |
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63 to 2.5 |
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(83) |
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10 |
(69) |
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13 |
(90) |
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11 (76) |
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(97) |
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12 |
(83) |
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C |
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C |
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15 |
(103) |
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10. |
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16 |
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(90) |
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16 |
(110) |
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14 |
(97) |
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17 |
(117) |
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15 (103) |
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120 |
130 |
140 |
150 |
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(0) |
(69) |
(138) |
(207) |
(276) |
(345) |
(414) |
(483) |
(552) |
(621) |
(689) |
(758) |
(827) |
(896) |
(965) |
(1034) |
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PRESSURE DROP ACROSS VALVE IN PSI (kPa) |
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CLOSE-OFF RATINGS AT VARIOUS BRANCH LINE PRESSURES |
M18956B |
70-6910 |
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711 |
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