The Bray 6P Series pneumatic positioner is designed for NAMUR quarter-turn valve actuators. It receives a 3-15 psi pneumatic control signal to provide continuous valve position control from 0° to 90°. Compatible with double-acting or single-acting actuators, it supports zero, span, and split-range adjustment for pneumatic position control of butterfly valves, ball valves, and industrial dampers.
Series 6P Pneumatic Positioner Product Image
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Bray 6P Series Pneumatic Positioner | NAMUR Quarter-Turn Valve Control
Pneumatic valve positioner supporting split-range adjustment and 0° to 90° angular travel control.
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Specifications
- Pneumatic Control Signal
- 3-15 psi
- Supply Pressure Range
- 20-100 psig (1.4-7.0 bar)
- Operating Temperature Range
- -4°F to 150°F (-20°C to 70°C)
- Protection Rating
- IP66
- Mounting Standard
- VDI/VDE 3845 (NAMUR)
- Air Port Size
- 1/4" NPT
- Rotation Range
- 0° to 90°
- Supply Medium
- Clean, Dry Gas
- Duty Cycle
- Continuous
- Enclosure Material
- Die-Cast Aluminum
- Electrical Interface
- NPT and IP65 DIN
- Actuator Type
- Double-Acting and Single-Acting, Direct and Reverse Acting
- Split-Range Function
- Supported
- Span and Zero Adjustment
- Adjustable
Application scenarios
Pneumatic Butterfly Valve Modulating Control
Designed for butterfly valves mounted on NAMUR-compliant actuators, receiving a 3-15 psi pneumatic control signal to automatically position the valve from 0° to 90° for continuous modulation control.
Pneumatic Ball Valve Quarter-Turn Positioning
Designed for quarter-turn pneumatic actuators on standard ball valves, compatible with double-acting or single-acting spring-return actuators, and modulates the valve position from 0° to 90° according to the pneumatic input signal.
Segmented Ball Valve Process Control
Used for positioning pneumatic actuators on segmented ball valves and modulating valve position in response to pneumatic control signals; supports span and zero adjustment as well as split-range operation.
Precise Industrial Damper Control
Used for industrial damper control requiring opening adjustment according to pneumatic control signals. A sensitive bipolar relay provides fast response and precise adjustment, with automatic positioning from 0° to 90°.
Pneumatic Valve Position Control in Harsh Industrial Environments
Used for continuous pneumatic positioning control of NAMUR-mounted quarter-turn valve actuators in industrial environments exposed to dust or moisture. Features IP66 protection and a die-cast aluminum housing.
Selection points
NAMUR Standard Direct-Mount Compatibility
Uses the VDI/VDE 3845 NAMUR mounting standard for direct installation on quarter-turn valve actuators compliant with the NAMUR standard.
Double-Acting and Single-Acting Actuator Compatibility
The standard positioner is suitable for double-acting actuators and can be converted for use with single-acting or spring-return actuators, supporting direct and reverse applications.
0° to 90° Positioning with Pneumatic Input
Uses a 3-15 psi pneumatic control signal to position quarter-turn valves within a 0° to 90° range for modulating valve position control.
Split-Range and Zero/Span Adjustment
Supports split-range operation and adjustable zero and span settings.
IP66 Die-Cast Aluminum Protective Enclosure
Features a die-cast aluminum enclosure with anodized and powder-coated finishes, rated IP66.
Installation & maintenance notes
Verify NAMUR Mounting Interface Compatibility
The Series 6P can be directly mounted to quarter-turn valve actuators compliant with VDI/VDE 3845 (NAMUR). Before installation, verify that the actuator uses the corresponding NAMUR mounting interface.
Use Clean, Dry Air Supply with Filtration
The supply medium should be clean, dry air. The manufacturer recommends using a coalescing air filter to remove dust, moisture, and oil particles and prevent positioner contamination.
Verify Supply Pressure and Control Signal Range
During installation and commissioning, verify that the supply pressure is 20-100 psig (1.4-7.0 bar) and that the pneumatic control signal is 3-15 psi.
FAQ
How does the Series 6P pneumatic positioner work?
The Series 6P positioner receives a 3-15 psi pneumatic control signal and automatically positions quarter-turn valves between 0° and 90° for precise valve-position modulation and control.
What are the technical advantages of the 6P positioner?
It offers high responsiveness, sensitivity, and a highly visible dome position indicator; an optional 4-20 mA position feedback transmitter; double-acting operation as standard, convertible to single-acting/spring-return operation; and strong compatibility with NAMUR-standard actuators.
What types of valve actuators is this positioner suitable for?
It can be directly mounted to NAMUR-standard quarter-turn valve actuators and is suitable for controlling butterfly valves and ball valves, including standard and segmented designs.
What are the key installation and maintenance considerations?
The die-cast aluminum enclosure has enhanced corrosion resistance through anodizing and powder coating. A coalescing air filter is recommended to remove dust, moisture, and oil particles, ensuring long-term stable operation of the positioning system.
How should selection and configuration be confirmed?
Specific configurations must be confirmed according to the actual model and application conditions to ensure that supply pressure, positioning range, feedback options, and other parameters match site requirements.
Documents
Product Brochure - Series 92/93 Pneumatic Actuators and AccessoriesProduct information · EnglishProduct Brochure - Actuation and ControlProduct information · EnglishProduct Brochure - Valve Automation Center (VAC)Product information · EnglishProduct Brochure - Series 6P PositionersProduct information · EnglishIOM Manual - Series 6P PositionersManual · EnglishSales Data Sheet - Series 6P P/P PositionersProduct information · EnglishRecommended Specification - Series 6P PositionersProduct information · English