STRAUB OPEN-FLEX 1 48.3mm 1.9″ 35001

Straub OPEN-FLEX 1 Pipe Coupling for 48.3mm Pipes

Description

The Straub OPEN-FLEX 1 is a high-performance, non-axially restrained pipe coupling designed for connecting pipes with an outer diameter of 48.3 mm. Its unique hinged construction allows for simple and fast installation, even in confined spaces or for repairing existing pipelines. Manufactured in Switzerland, this coupling ensures a reliable and durable connection for various media and applications. This model is specifically noted as being ‘not pull-out-resistant’, making it ideal for applications where flexibility is required.

Specifications

• Manufacturer: Straub
• Model: OPEN-FLEX 1
• Article Number: 35001
• Outer Pipe Diameter: 48.3 mm (1.9 inch)
• Pressure Rating: PN 16 / 232 psi to PN 25 / 363 psi (application dependent)
• Sealing Gasket Material: EPDM
• Casing Material Code: W2 (Stainless Steel Casing, Zinc-Plated Bolts)
• Tightening Torque: 7.6 Nm

Label Info

• Ser-Nr: 153520290818
• Version: W2

Application

This coupling is ideal for use in water supply, wastewater treatment plants, industrial processing, shipbuilding, and general pipeline construction. The EPDM gasket offers excellent resistance to water, many chemicals, and high temperatures.

Country of Origin

Made in Switzerland.

CO2 Impact

By reusing this component, you are contributing to a circular economy and preventing the emission of approximately 1.4 kg of CO2, which would have been generated during the production of a new part.

Availability

In stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?

What does ‘not pull-out-resistant’ mean for this coupling?

Answer: This means the coupling seals the pipe connection but does not provide axial restraint. The pipes must be independently anchored and secured to prevent them from pulling apart under pressure or movement.

Question?

What is the W2 material specification for this Straub coupling?

Answer: W2 designation from Straub indicates a casing made of AISI 304 stainless steel and bolts/nuts made from zinc-plated, passivated steel. This provides good corrosion resistance for general-purpose applications.

Question?

Is the EPDM gasket in this coupling suitable for potable water applications?

Answer: Yes, EPDM gaskets are widely used and certified for potable water applications (e.g., WRAS, DVGW approvals). They offer excellent resistance to aging, weathering, and hot water, making them a safe choice for drinking water systems.

Last Update: Friday, March 13, 2026

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