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IMI STI PT Series SR/CCK Valve Positioner Double Single Acting for Butterfly Plug Ball Valves

1
MOQ
3800-3500$ per set
Price
IMI STI PT Series SR/CCK Valve Positioner Double Single Acting for Butterfly Plug Ball Valves
Features Gallery Product Description Ratings & Review Request A Quote
Features
Specifications
Input Signal: 3-15 Psi And 4-20 MA
Operating Temperature: -20°C To 70°C
Supply Pressure: 2.5-7 Bar
Air Consumption: 1.02 Nm³/h At 400 KPa
CV Max Low Flow: 0.34 (Inlet & Outlet 1/4")
Feeding Connection: 1/4" ND
Electrical Connection: 1/2" NPTF
Hysteresis: 0.5% Of Full Stroke
Linearity: 1% Of Full Stroke
Sensitivity: 0.25% Of Signal Range
Highlight:

IMI STI PT Series valve positioner

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double acting valve positioner for butterfly valves

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single acting valve positioner for ball valves
Basic Infomation
Place of Origin: Italy
Brand Name: IMI STI
Model Number: SR/CCK
Document: SR CCK.pdf
Payment & Shipping Terms
Packaging Details: Carton/Wooden Case Packaging
Delivery Time: 6-8 weeks
Payment Terms: T/T
Supply Ability: 800 sets per year
Product Description

The IMI STI PT Series SR/CCK Valve Positioner

The IMI STI PT Series SR/CCK Valve Positioner is a robust, high-reliability pneumatic positioner engineered for precise proportional control in industrial valve applications. Part of IMI STI's trusted PT Series, the SR/CCK delivers exceptional performance in demanding environments, ensuring accurate valve positioning for enhanced process control and operational efficiency.

Product Overview

The SR/CCK is specifically designed for proportional quarter-turn operation, making it ideal for actuating butterfly, plug, ball valves, and similar rotary devices. It can also be adapted for linear actuators using a dedicated bracket. Positioned in the control circuit between the air filter regulator and the actuator, this heavy-duty positioner operates on the balanced-forces principle, with air distribution managed by a reliable spool valve. Available in double-acting configuration (convertible to single-acting), it supports a wide range of actuator strokes through interchangeable linear cams (up to 270°). Built for harsh industrial conditions, the SR/CCK offers outstanding durability, high repeatability, and suitability for hazardous areas in sectors like oil and gas, refining, chemical processing, power generation, and metal production.

Features
  • Heavy-duty metallic construction for maximum reliability in aggressive environments
  • Proportional control for rotary (quarter-turn) and adaptable linear actuators
  • Double-acting design with single-acting capability
  • Interchangeable linear cams (up to 270°) for flexible stroke adjustment; custom profiles available
  • Balanced-forces spool valve system for precise air distribution and fast response
  • Split-range signal support for multi-actuator sequencing
  • Optional full stainless steel spool valve for enhanced corrosion resistance
  • High hysteresis and linearity performance
  • Outdoor installation-ready with robust protection
Technical Specifications
Input Signal:
3-15 psi (0.2-1 bar) pneumatic; split-range options available
Supply Pressure:
2-10 bar
Accuracy (with linear cam):
±1% of full range
Hysteresis:
Typically low (around 0.5-1% depending on configuration)
Linearity:
±1% of full stroke
Sensitivity:
High response to signal changes
Air Consumption:
Efficient design for reduced operational costs
Operating Temperature:
Standard -20°C to +70°C (extended ranges on request)
Cam Operating Angle:
Up to 270°
Connections:
Pneumatic ports ND 1/4"; electrical (for I/P variants) ND 1/2" NPTF
Enclosure:
Metallic case, heavy-duty for hazardous and outdoor use
Additional Options:
Intrinsically safe/explosion-proof versions, pressure gauges
Applications
  • Oil and gas production and refining
  • Chemical and petrochemical plants
  • Power generation facilities
  • Metal processing and mining operations
  • Any automated system requiring reliable quarter-turn or linear valve actuation in harsh, hazardous, or high-demand environments
FAQ
What types of valves is the SR/CCK best suited for?
It is optimized for quarter-turn valves like butterfly, ball, and plug valves, with adaptation possible for linear types via brackets.
Can it be used in hazardous areas?
Yes, its heavy-duty design supports installation in potentially explosive atmospheres, with optional certifications available.
Is it compatible with single-acting actuators?
Absolutely—the double-acting unit can be configured for single-acting operation.
How flexible is the cam system?
Multiple linear cams allow adjustment for different actuator strokes up to 270°, with custom profiles on request.
What maintenance is required?
Minimal due to its robust spool-based design; routine checks on air supply and calibration ensure long-term performance.
Contact Us

For inquiries, quotations, or technical support, reach out via:
WeChat / WhatsApp / Phone: +8613472860702

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Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

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F
FLOWSERVE MARK ONE Linear Globe Angle Control Valve Spring Cylinder Valve Pneumatic Actuator
Switzerland Dec 1.2025
Helpful (5)
great price and fast delivery
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fisher pneumatic positioner

hydraulic valve accessories

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