Self-Operating Valves

Johnson Controls 3-way Water Regulating Valves for Cooling Tower Systems

Designed specifically for condensing units cooled either by atmosphere or forced draft cooling towers. The 3-way valve senses the compressor head pressure and allows cooling water to flow to the condenser, bypass the condenser, or flow to both the condenser and bypass line.

V48AB-1 1/2'' R-12 85 to 110
V48AB-2 R-22 145 to 190
V48AC-1 3/4'' R-12 85 to 110
V48AC-2 R-22 145 to 190
V48AD-1 1'' R-12 85 to 110
V48AD-2 R-22 145 to 190
V48AE-1 1-1/4'' R-12 85 to 110
V48AE-2 R-22 145 to 190
V48AF-1 1-1/2'' R-12 85 to 110
V48AF-2 R-22 145 to 190

Johnson Controls Temperature Actuated Modulating Water Valves

Series V47 temperature valves are widely used on heat exchangers to maintain optimum operating temperatures of air compressor’s, hydraulic oil, etc. They are used on condenser applications where expensive fluids are economically recovered or where the use of cooling water is restricted.

Order # Size Range °F Well # Order # Size Range °F Well #
V47AA-1 3/8'' 115 to 180 WEL18A-602R V47AE-1 1-1/4'' 75 to 135
V47AA-2 160 to 230 WEL17A-602R V47AE-2 115 to 180 WEL17A-601R
V47AA-3 75 to 135 WEL18A-601R V47AE-3 160 to 230
V47AB-3 1/2'' 115 to 180 WEL18A-602R V47AR-1 1-1/2'' 75 to 135
V47AB-4 160 to 230 V47AR-2 115 to 180 WEL17A-601R
V47AB-5 75 to 135 WEL17A-600R V47AR-3 160 to 230
V47AC-3 3/4'' 115 to 180 WEL18A-602R V47AS-1 2'' 115 to 180 WEL17A-600R
V47AC-4 160 to 230 V47AS-2 160 to 230
V47AC-6 75 to 135 WEL17A-600R V47AS-3 75 to 135
V47AD-1 1'' 75 to 135 V47AT-1 2-1/2'' 115 to 180 WEL17A-600R
V47AD-2 115 to 180 WEL17A-601R V47AT-2 160 to 230
V47AD-3 160 to 230 V47AT-3 75 to 135

Johnson Controls Water Valve Renewal Kits

For Series V46 through V49 Commercial Water Valves

Renewal kits for pressure and temperature actuated water regulating valves. Each kit contains a seal, disc, diaphragms and all additional internal parts required to recondition the valves.

Size Commercial Kit Model Kit Diaphragm Kits only for all Type
For Series V46A,N and V47A,N – N.O. For Series V48, V49 – N.O. For Series V48, V49 – N.O.
3/8'' STT14A-600R STT14A-601R
1/2'' STT15A-602R STT15A-605R STT15A-603R
3/4'' STT16A-601R STT16A-604R
1'' STT17A-610R STT17A-616R STT17A-611R DPM17A-600R
1-1/4'' STT17A-617R STT17A-612R
1-1/2'' STT17A-604R
2'' STT18A-600R STT18A-602R DPM17A-601R
2-1/2'' STT18A-601R

Trerice Self-Operated Temperature Regulating Valves

Trerice “Self-Ops” are the preferred choice of OEM’s and mechanical contractors. These regulators require no external power source and are ideal for regulating the temperature in tanks, process streams and various types of equipment. The actuator is noted for its rugged die-cast aluminum housing, fully enclosed bellows assembly and over-range protection.

Valve bodies for the 91000/914000/91600 series are offered in single-seated, double-seated and 3-way design and are available in bronze, cast-iron, cast-steel and stainless steel construction. Choose from direct-acting (heating), reverse acting (cooling) or mixing. Valve sizes range from 1/2” to 6”, with various connection types available.

Thermal systems are available in a wide assortment of temperature ranges, indicating and non-indicating, and a variety of bulb and capillary configurations, as well as fail-safe actuators. Thermowells are available in brass, steel and 316 stainless steel.

Trerice Model 91000 (without indicating dial) features a lower profile and should be specified where space constraints may be an issue.

Trerice Model 91400 (with indicating dial) will allow the operator to verify the process temperature and to aid in temperature adjustment.

Trerice Model 91600 Fail-Safe actuator is designed to cause the valve to fail in a safe control position should accidental damage to the thermal system occur, resulting in loss of pressure charge.


  • Self-Operating Design
  • Indicating, non-indicating and safe models available
  • Heavy Duty Die Cast Aluminum Housing
  • 1/2" thru 6" Valve Sizes
  • Internal Over-range Protection

(Click on pictures to enlarge)

Your NECC Sales Support Professional can help you select the Self-operated Temperature Regulating valve that’s right for your application!

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