Product Details for Straub OPEN-FLEX 1 Pipe Coupling

Description

The STRAUB-OPEN-FLEX 1 is a high-performance, openable pipe coupling designed for joining or repairing pipes without the need for welding, flanging, or threading. Its wrap-around design makes it exceptionally suitable for installations in tight spaces or on existing pipe systems. This non-pull-out-resistant coupling effectively compensates for axial movement and angular deflection, ensuring a durable and flexible connection.

Specifications

• Manufacturer: Straub
• Model: OPEN-FLEX 1
• Outside Diameter (OD): 76.1 mm / 3 inch
• Pressure Rating (PN): 16 bar to 25 bar (232 psi to 363 psi)
• Gasket Material: EPDM
• Casing Material Grade: W2 (Stainless Steel Casing)
• Design: Not pull-out-resistant
• Tightening Torque: 10 Nm

Label Info

• Article Number (Art-Nr): 35251
• Serial Number (Ser-Nr): 158252291118

Application

This coupling is ideal for a wide range of applications, including water and wastewater treatment, shipbuilding, industrial process piping, and building services. The EPDM seal is suitable for water, compressed air, and numerous chemical products.

Country of Origin

Made in Switzerland.

CO2 Impact

By choosing this pre-owned component, you contribute to a circular economy and avoid the emission of approximately 3.6 kg of CO2, which would be generated in the production of a new part. This saving is equivalent to the emissions of a car driving 18 kilometers.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

A non-pull-out-resistant (or non-axially restrained) coupling does not lock the pipes together to prevent them from pulling apart. The pipes must be independently anchored and supported. This design allows the coupling to absorb vibration, expansion, and contraction in the pipeline.

The EPDM gasket is generally suitable for temperatures ranging from -30 deg C to +100 deg C (-22 deg F to +212 deg F). Always consult the manufacturer's data sheet for specific application limits.

Yes, one of the key advantages of this coupling is its ability to join pipes of various materials, such as steel, stainless steel, cast iron, copper, and some plastics, as long as the outside diameters are within the specified tolerance.

Last Update: Friday, March 13, 2026

PLC2DAY is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.