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Municipal water solutions: (800) 616–3837
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Municipal water solutions: (800) 616–3837
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Contact a Customer Care Representative

We’ll get back to you within 24 hours or the following business day.

Prefer to call?
Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

For sales & general inquiries
Municipal water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010

For product support
Municipal water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010

BLRA Pneumatic Actuator (Type 766)

The BLRA Pneumatic Type 766 actuator with integral, top-mounted positioner is a pneumatically operated, spring-opposed diaphragm actuator designed specifically to fit the Research Control Valve body-bonnet assembly. The unit is available in two sizes: one for the 1/4" valve and another larger version for the 1/2" through 1" valves. The unit, when equipped with the model BLRA positioner, functions as an air-to-open actuator retracting the stem and opening the valve on an increasing instrument signal. The unit is designed to extend the stem, closing the valve, on a decreasing or loss of instrument signal. A force-balance system is incorporated utilizing the full force of the supply air to position the stem precisely and with a high degree of repeatability. This type actuator should be used when the application calls for high positioning accuracy or when greater force is required over the standard actuator such as in the case of high shutoff pressures or excess packing friction.

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  • Size Range
    6.4...12.7 mm
    1/4...1/2 in.
  • Temperature Range
    –28.9…65.6° C
    –20…150° F
  • Pressure Range
    0.2...1 bar
    3...15 psi
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Specifications

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  • Size Range
    6.4...12.7 mm
    1/4...1/2 in.
  • Temperature Range
    –28.9…65.6° C
    –20…150° F
  • Pressure Range
    0.2...1 bar
    3...15 psi

Product Documentation

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Product Data Sheets RCV Type 766 0.25 & .5 in. Air-to-Open Valve Actuator Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Manuals & Guides Multi-language Research Control® Valve Pictorial Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Selection & Ordering Guides Research Control® Valve Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Manuals & Guides RCVcalc Valve Sizing Software Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Forms RCV Valve Order Specification Sheet Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Application Data Sheets Chemical Compatibility Chart Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Sell Sheets RCVcalc Valve Sizing Software Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English
Forms Research Control®s Valves Specification Form Research Control Valve (RCV) {{moreContent}} {{seeAllLabel}} | English

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Software & Firmware 

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Research Control Valve (RCV) RCVcalc - Research Control Valve Sizing Software Software | Updated August 19, 2020 | 76.13 MB See Release Notes
Research Control Valve (RCV) RCVcalc - Research Control Valve Sizing Software Software | Updated August 19, 2020 | 76.13 MB See Release Notes

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We're here to help
Contact a Customer Care Representative

We’ll get back to you within 24 hours or the following business day.

Prefer to call?
Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

For sales & general inquiries
Municipal water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010

For product support
Municipal water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010