Quality Policy

Clarke Valve is dedicated to providing the highest quality industrial valves to our customers, defect-free, and on time.
We are committed to satisfying all customer and applicable requirements and to the continual improvement of our business, products, processes, and quality management system. All valves produced by Clarke are designed, inspected, and tested in strict conformance to the applicable industrial valve standards and codes to ensure maximum product safety and reliability.


For a fraction of the cost, size, and weight of globe control valves, Clarke Valve™ products deliver precision flow control, minimal cavitation and turbulence, and greater rangeability. Download our latest brochure to learn more.

Clarke Valve Digital Brochure 2019

These product bulletins show the features that make the Shutter Valve the first major innovation in flow control in the last 50 years. The parts schedule and application areas are also included.

Download: SI Units / English Units

The API 641 standard applies to all stem seal materials and requires a stringent maximum allowable leakage of 100 parts per million by volume (PPMv). This API test standard calls for 610 cycles of the valve​ under extreme temperature fluctuations to evaluate emissions performance over an accelerated life cycle.

Download: API 641 Certification

The ISO 9000 family of quality management systems standards is designed to help organizations ensure that they meet the needs of customers and other stakeholders while meeting statutory and regulatory requirements related to a product or service.

Download: ISO 9001:2015 Certification

Rangeability of a control valve may be defined as the ratio of its maximum controllable flow rate to its minimum controllable flow rate.

The Shutter Valve far exceeds the rangeability of other valve types, while maintaining a compact design and very low torque requirements.

1″ Shutter Valve versus Ball and Butterfly Valves DOWNLOAD

1″ Shutter Valve versus Globe Valves DOWNLOAD

2″ Shutter Valve versus Butterfly Valve DOWNLOAD

2″ Shutter Valve versus Rotary Ball Valves DOWNLOAD

2″ Shutter Valve versus Globe Valves DOWNLOAD

4″ Shutter Valve versus Butterfly Valves DOWNLOAD

4″ Shutter Valve versus Rotary Ball Valves DOWNLOAD

4″ Shutter Valve versus Globe Valves DOWNLOAD

Let Our Experts Help YouFind Your Shutter Valve™

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solution for your company's control valve needs.
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