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Straub Pipe Joint - Flex


Non-Axial Restraint Pipe Couplings
The STRAUB-FLEX coupling will join virtually and plain end pipe. Whether pressure or suction lines, thick or thin wall pipe, the STRAUB-FLEX coupling is installed quickly, safely and economically. STRAUB-FLEX couplings can accomodate pipe system expansion and contraction movement as well as angular deflection. STRAUB-FLEX couplings require the pipes to be axially restrained and are an economical alternative to rubber and metal expansion joints.

Specification Chart - Straub Flex

Material Specification

STRAUB-FLEX type couplings do not have a grip ring and are therefore suitable for applications requiring axial movement due to thermal growth or other factors. STRAUB-FLEX couplings are a suitable replacement for expansion joints. STRAUB-OPEN-FLEX couplings are a split case version of the standard STRAUB-FLEX coupling.

Pressure Responsive Seal
Seal is reinforced by increasing line pressure, ensuring long life performance.
Seals on rough pipe surfaces
No lubrication of gasket is required
Pressure or vacuum service
Absorbs noise and vibration
Low torque/compression ensures long service life

Compact Design
Saves Space
Allows pipes to be closely grouped
Allows low profile installation
Corrosion resistant construction

Ease of Handling and Assembly
Light weight
Simple and quick to install
Stab fit, no need to disassemble
Low torque required
No pipe end preparation
Never needs retightening
No welding