Duo-Chek® high performance check valves have long been the standard for low-pressure drop flow reversal protection, available in cast iron, cast steel, stainless steel and a variety of exotic materials. Typical applications include petroleum refining, oil and gas production, chemical and petrochemical, power generation, steel/primary metals, marine, water and wastewater, and pulp and paper.


6 Alexander Road
Cregagh, Belfast BT6 9HJ,
Northern Ireland
PHONE: +44 028 9070 4222
FAX: +44 028 9040 1582

4526 Research Forest Drive,
Suite 400, The Woodlands,
Texas 77381 U.S.A.
PHONE: +1 936 271 6500
FAX: +1 936 271 6510

Crane CP&E Chihuahua
Juan Ruiz de Alarcón 313,
Complejo Industrial Chihuahua,
31136 Chihuahua, Mexico
PHONE: +52 614 442 9860

Crane Process Flow Technologies (India) Pvt. Ltd
E7-E8 Old MIDC Satara.
415004, India
PHONE: +91 2162 244417
FAX: +91 21 62245126

Sydney, Australia Operations
146-154 Dunheved Circuit
St. Marys, NSW 2760 Australia
PHONE: +61 2 9623 0234
FAX: +61 2 9673 3870

For all other regions:


We offer technical expertise and advice because we understand that specialized products require customized expert support. We also offer training programs on-demand.


Safety is our priority. When working with corrosive or abrasive media in the chemical, petrochemical, refining, oil & gas, power and biopharma industries, our products meet high safety standards and are therefore used and accepted in these industries, worldwide.


Quality is always at the core of our business. Our products are subjected to thorough measurements and quality checks throughout the production process. Each finished product is carefully inspected and tested in a final check. With our quality checks and programs in place, we can assure a consistent quality.


Duo-Chek® valves have long been the standard for low-pressure drop flow reversal protection. These valves are made from cast iron, cast steel, stainless steel, and a broad variety of exotic materials. Duo-Chek offers retainerless designs to API 594 end-to-end dimensions in steel bodied wafer and lug style with a wide variety of trim materials including both metal and resilient seats. Valves come in sizes up to 88″ and pressure ratings up to class 4500.