WEH® Quick Connector TW04

For Pressure and Vacuum Testing of Male Threads
Part No.: TW04

The WEH® TW04 Screw Connector is the ideal solution for pressure and vacuum testing, as well as for filling and venting applications, on components with male threads. It enables quick, tool-free connections up to 50 bar (725 psi)—simply hand-tighten until the integrated O-ring makes contact, and a pressure-tight seal is instantly formed. No wrenches, sealants, or tape are required, offering significant time and cost savings.

The pressure-assisted piston design ensures that the connection becomes even more secure as internal pressure increases, providing a reliable clamping force on the test piece. The standard swivel joint enhances flexibility during testing by allowing the connector to be positioned conveniently, minimizing hose twisting and operator fatigue.

With durable NBR or polyurethane seals and corrosion-resistant stainless steel construction, the TW04 offers long-lasting performance and easy maintenance through simple seal replacement—reducing downtime and maximizing efficiency.

Technical Specifications

Key Features

• Tool-free operation – just hand-tighten to seal

• Swivel joint for convenient positioning and media line protection

• High-grade materials for industrial-grade durability

• Pressure-assisted clamping improves sealing as pressure increases

• Easy maintenance with quick seal replacement

• Suitable for vacuum and pressure testing, venting, and filling

Compatible Thread Types

• G (BSPP) Thread:
  DIN 259 / ISO 7/1 / DIN EN ISO 228-1 G1/8" to G1"

• NPT Thread:
  ANSI/ASME B1.20.1-1983 NPT 1/8" to NPT 1"

Typical Applications

The TW04 Screw Connector is used for testing and filling:

• Fittings and fixtures

• Pipes and tubes

• Boilers and tanks

• Radiators

• Hydraulic blocks and manifolds

• Turbine housings

• Automotive subcomponents