The Johnson Controls V47AB-4 is a temperature-actuated, direct-acting modulating valve for regulating water flow. Its 1/2″ NPT threaded connection, 160 to 230 °F range, and brass body provide precise temperature control.
Technical Specifications
- Part Number: V47AB-4
- Series: V47 Temperature-Actuated Modulating Valve
- Valve Type: Opens on Temperature Increase
- Control Action: Direct-Acting, Commercial
- Connection: 1/2″ NPT Threaded
- Body Material: Cast Brass
- Temperature Range: 160 to 230 °F
- Maximum Bulb Temperature: 250 °F
- Bulb Size: 11/16″ x 3 1/4″
- Capillary Length: 6 ft.
- Bypass Orifice Diameter: 0.062″
Key Features and Functionality
- No-Slide Passages: Prevents fouling in water passages through no-slide components.
- Isolated Spring: Avoids spring corrosion by isolating the spring from the cooling water.
- Manual Flush: Enables manual flushing via accessible internal passages.
- Anti-Hammer Design: Reduces hydraulic shock through chatter-minimizing valve geometry.
- Pressure-Stable Adjustment: Maintains setpoint despite line pressure changes via design.
Compatible Components and Related Parts
- Seat Repear Kit: STT15A-602R
- Replacement Sensing Element: SET29A-625R
- Bulb Well Number: WEL18A-602R
Industry Applications
- Heat Exchangers: Stabilizes coolant temperature by modulating water flow.
- Air Compressors: Prevents overheating by controlling the cooling-water supply.
- Hydraulic Systems: Holds oil temperature using water-side regulation.
- Swimming Pools: Controls pool temperature by adjusting the water circulation.
- Printing Equipment: Maintains paint viscosity via coolant temperature control.
Compliance and Approvals
- Johnson Controls manufacturing standards
- Suitable for non-corrosive water systems
Installation and Operational Notes
- Prevents contamination by flushing liquid lines before installation.
- Ensures correct operation by aligning with the flow direction arrow.
- Protects the capillary by keeping it clear of metal contact.
- Maintains valve stability by mounting vertically bellows down.
- Avoids air blockage by positioning the bulb below the liquid level.
Series Information
V47 Series Temperature Actuated Valve
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