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Extended Fin Type 973
Research Control Valve (RCV)

Extended Fin Type 973

The extended fin globe control valve is designed for modulating flow control in industrial or research applications at 1200° F or less and at pressures less than 5000 psi. The added bonnet length and fins serve to reduce the heat at the packing area.

Features

  • Interchangeable trim sets
  • Extended cooling fin bonnet
  • Trim characteristics: Linear, equal percent, quick open or double taper
  • TFE chevron packing
  • ANSI Class III shutoff
  • High temperature rating

Software

Specifications

Size
1/4...1 in.
Temperature Range
-450…1200 °F
Flow Range
0…6.0 cv
Pressure Range
Up to 5,000 PSI

Additional Specifications

Application Examples

Processing Plants
High Temperature

Industries
Aviation & Aerospace
Chemical, Refining & Petrochemical
Oil & Gas
Process or Industrial
Test Equipment & Services

Product Resources

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Parts, Accessories & Other Options

Actuator, Electric (EVA-1)

Actuator, Electric (EVA-1) More Info Less Info

The Model EVA-1 is a small, electronically controlled valve actuator developed specifically to fit 1/4" to 1" Research Control Valves. Its accurate positioning and compact size make it especially suited to flow control in research and small process applications.

RCV Model EVA-1 Electronic Valve Actuator Manual (RCV-UM-00566-EN) RCV Model EVA-1 Electronic Valve Actuator Product Data Sheet (RCV-DS-00264-EN) USB to RS-232 Converter User Manual (INC-UM-00142-EN) Valve Application Data Sheet Form (941612) Valve Order Specification Sheet
Actuator, Pneumatic (Type 754)

Actuator, Pneumatic (Type 754) More Info Less Info

The Type 754 actuator 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 to fit the 1/4" valve and a larger version to fit the 1/2" through 1" valves. It provides smooth linear retraction of the valve stem upon an increasing instrument signal. A decrease in instrument signal causes the stem to extend and close the valve. Downward closing force is generated by the spring, bearing on the diaphragm plate. An increasing pressure in the diaphragm cavity opposes the force of the spring and retracts the stem, opening the valve. The unit is designed to extend the stem, closing the valve, should the instrument signal fail.

RCV Type 754, 1/4 & 1/2 in. Standard Air-to-Open Actuator Assembly Product Data Sheet (RCV-DS-00266-EN) USB to RS-232 Converter User Manual (INC-UM-00142-EN) Valve Application Data Sheet Form (941612) Valve Order Specification Sheet
Actuator, Pneumatic (Type 755)

Actuator, Pneumatic (Type 755) More Info Less Info

The Type 755 actuator 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 to fit the 1/4" valve and a larger version to fit the 1/2" through 1" valves. It provides smooth linear extension of the valve stem upon an increasing instrument signal. A decrease in instrument signal causes the stem to retract and open the valve. Downward closing force is generated by instrument air on top of the diaphragm. An increasing pressure in the diaphragm cavity opposes the force of the spring and extends the stem, closing the valve. The unit is designed to retract the stem, opening the valve, should the instrument signal fail.

RCV Type 755, 1/4 & 1/2 in. Standard Air-to-Close Actuator Assembly Product Data Sheet (RCV-DS-00267-EN) USB to RS-232 Converter User Manual (INC-UM-00142-EN) Valve Application Data Sheet Form (941612) Valve Order Specification Sheet
Actuator, Pneumatic (Type 759)

Actuator, Pneumatic (Type 759) More Info Less Info

The Type 759 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 TLDA positioner, functions as an air-to-close actuator extending the stem and closing the valve on an increasing instrument signal. The unit is designed to retract the stem, opening 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.

RCV Type 759, 1/4 & 1/2 in. Air-to-Close Positioner Actuator Product Data Sheet (RCV-DS-00268-EN) USB to RS-232 Converter User Manual (INC-UM-00142-EN) Valve Application Data Sheet Form (941612) Valve Order Specification Sheet
Actuator, Pneumatic (Type 766)

Actuator, Pneumatic (Type 766) More Info Less Info

The 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.

RCV Type 766, 1/4 & 1/2 in. Air-to-Open Positioner Actuator Product Data Sheet (RCV-DS-00269-EN) USB to RS-232 Converter User Manual (INC-UM-00142-EN) Valve Application Data Sheet Form (941612) Valve Order Specification Sheet
SRD960 RCV Universal Positioner

SRD960 RCV Universal Positioner More Info Less Info

The SRD960 RCV Universal Positioner offers the most advanced technology available on the market today. This includes among others an infrared interface for wireless operation and configuration, a multi-lingual full-text graphic LCD and an availability with the choice of all in the process automation applied communication protocols. It offers enhanced applications and methods to analyze recorded stroke data.

SRD991 RCV Intelligent Valve Positioner

SRD991 RCV Intelligent Valve Positioner More Info Less Info

The top-mounted SRD991 digital positioner is integral with the Type 766 actuator, spring opposed diaphragm actuator designed specifically to fit the Research Control Valve body-bonnet assembly. The unique positioner is compatible for both the 1/4 in. and 1/2 in. actuator

SRI990 RCV Analog Positioner

SRI990 RCV Analog Positioner More Info Less Info

The SRI990 RCV Analog Positioner with analog input 4…20 mA is designed to operate pneumatic valve actuators. It offers an easy adjustment by means of switches and potentiometers. The modular structure of this positioner series enables conversion from an analog to an “intelligent” positioner by exchanging the electronics.

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