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Honeywell VP512 Unit Vent Pneumatic Control Valve

Unit Vent Pneumatic Control Valve
VP512

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.

Select a link under the "item" tab below to order.

Cat #(inch)(psi)Body Pattern(Cv)Valve ActionType of End ConnectionClose-off Ratings at Branch Line Pressure
VP512A17261 in.3 psi to 8 psiTwo-way, Straightthrough10 CvProportional Normally OpenInlet - Internal NPT Outlet - External NPT Union78 psi at 13 psi
VP512A17421 in.3 psi to 8 psiTwo-way, Right Angle10 CvProportional Normally OpenInlet - Internal NPT Outlet - External NPT Union78 psi at 13 psi
VP512A17671 1/4 in.3 psi to 8 psiTwo-way, Straightthrough16 CvProportional Normally OpenInlet - Internal NPT Outlet - External NPT Union40 psi at 13 psi
VP512A17831 1/4 in.3 psi to 8 psiTwo-way, Right Angle16 CvProportional Normally OpenInlet - Internal NPT Outlet - External NPT Union40 psi at 13 psi
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)


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