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Home /Products/Valve Accessories/Spiraxsarco Pneumatic Control Valve and Masoneilan SVI2 Control Valve Positioner and Reliable 4700E Electro-pneumatic Controller and FOXBORO Positioner SRD991

Spiraxsarco Pneumatic Control Valve and Masoneilan SVI2 Control Valve Positioner and Reliable 4700E Electro-pneumatic Controller and FOXBORO Positioner SRD991

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MOQ
US $1500.00 - 2100.00/ Unit
Price
Spiraxsarco Pneumatic Control Valve and Masoneilan SVI2 Control Valve Positioner and Reliable 4700E Electro-pneumatic Controller and FOXBORO Positioner SRD991
Features Gallery Product Description Ratings & Review Request A Quote
Features
Specifications
Pneumatics: Air Or Sweet Natural Gas
Power Supply: 4-20mA
Connections (Supply And Actuator): 1/2" NPT
Accuracy: ± 0.5 Percent Full Span
Valve Type: Control Valve
Highlight:

Spiraxsarco pneumatic control valve

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Masoneilan SVI2 valve positioner

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FOXBORO SRD991 positioner
Basic Infomation
Place of Origin: Amercia
Brand Name: Masoneilan
Model Number: 4700E
Payment & Shipping Terms
Packaging Details: Carton + Wooden Box + Protection
Delivery Time: 5-7 work days
Payment Terms: T/T
Supply Ability: 1000 units per year
Product Description
Product Overview

The Masoneilan 4700E is a robust electro-pneumatic positioner that uses a precision multi-lobe cam feedback system to deliver accurate valve positioning, fast response, and customizable control characteristics. Designed for use with both rotary and reciprocating actuators, it converts a 4-20 mA input signal into proportional pneumatic output, making it a trusted choice for demanding industrial control valve applications.

Features
  • Multi-lobe cam provides field-selectable linear, split-range linear, or equal percentage characteristics.
  • Corrosion-resistant internal components for reliable performance in harsh environments.
  • Fully enclosed adjustments protected from weather and contaminants.
  • Force-balanced design ensures precise and stable positioning.
  • Zero adjustment via spring button and turnbuckle for easy calibration.
  • Compact and rugged construction suitable for outdoor and severe service.
  • Compatible with Masoneilan control valves for optimized system performance.
Technical Specifications
Attribute Value
Type Electro-pneumatic (4-20 mA input)
Action Direct (increasing signal increases output)
Input Signal 4-20 mA
Input Resistance 170 ohms nominal
Deadband <0.5% of span
Hysteresis <0.5% of span
Repeatability Within 0.5% of span
Sensitivity Better than 0.3% of span
Conformity +1% of span
Air Supply Up to 100 psig (dictated by actuator)
Air Consumption Low steady-state consumption
Air Connections 1/4" NPT
Electrical Connections 1/2" NPT or M20
Operating Temperature Wide range with temperature effect data available
Housing Die-cast aluminum with corrosion-resistant internals
Mounting Suitable for rotary (direct cam on shaft) or reciprocating actuators (lever and turnbuckle)
Applications

Ideal for precise positioning of control valves in oil & gas, refining, chemical processing, power generation, and other industries where corrosion resistance, fast response, and customizable flow characteristics are required.

FAQ

Q: What cam characteristics are available? A: Field-changeable linear, split-range linear, and equal percentage.

Q: Is it suitable for harsh environments? A: Yes, with corrosion-resistant materials and fully enclosed adjustments.

Q: Can it be used on rotary valves? A: Yes, the cam mounts directly on the actuator shaft.

Q: How is calibration performed? A: Zero adjustment is easy via the spring button and turnbuckle.

Q: Does it support reciprocating actuators? A: Yes, using a simple lever and turnbuckle assembly.

Contact Us

Phone: +86-17799852698(WeChat/WhatsApp supported)

Email: tracychen@gbsxj.com/ tracy@gongboshi.com

Website: https://www.shgongboshi.com/contactus.html

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

A
Annie Dowson
United Kingdom Jan 8.2026
Helpful (105)
The Emerson AMS Trex we received is top quality – solid build, responsive touchscreen, and works perfectly with our HART and Fieldbus devices. It’s definitely made our commissioning and troubleshooting a lot more efficient. Also, big thanks to the seller – very professional, fast shipping, and they knew exactly what we needed. Super reliable supplier. Would absolutely buy from them again.
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Tel : +8615000725058
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edward.zhao@gongboshi.com
+8615000725058
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