Control systems Self-acting controls
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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2025
TI-P078-04 CTLS Issue 10
KB51 and KC51 Bronze Self-Acting Control Valves
Description The KB and KC range of two-port valves are used in conjunction with Spirax Sarco SA control systems to provide a self-acting temperature control unit. Available types
KB51 Normally open + phosphor bronze pressure balancing bellows KC51 Normally open + stainless steel pressure balancing bellows
Note: Pressure balancing bellows enables the valve to operate against higher differential pressures.
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Standards These products fully comply with the requirements of the European Pressure Equipment Directive 2014/68/EU and carry the mark when so required. Certification As standard these products are available with a manufacturers’ Typical Test Report. Note: All certification / inspection requirements must be stated at the time of order placement. Sizes and pipe connections KB51: 1", 1 ¼ ", 1 ½ " and 2" KC51: 1 ½ " and 2" Screwed BSP (BS 21 parallel) or NPT connections.
TI-P078-04 CTLS Issue 10
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KB51 and KC51 Bronze Self-Acting Control Valves
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