Joint Testers

Mechanical Research & Design, Inc. designs and manufactures our premium brand of Joint Testers for a wide variety of pipe connection, joint seal, and weld integrity checks. Joint testers by definition check a weld or pipe joint connection for leaks by employing a seal forward and aft of the region to be tested, creating an isolated test annulus that can be hydrotested. Joint testers are an efficient way to progressively test pipe joints without the requirement for filling piping systems fully with test fluid, mitigating concerns of standing water and corrosion in new pipe assemblies. Our SEALFAST® Pipe Joint Testers can be fabricated from 1/2″ to in excess of 20 feet diameter, for standard round pipe, to irregular shaped pipe, and can be customized to travel through custom pipe fittings (elbows, tees, etc.) or even fit through small manholes in transit to the utilization location. Joint testers can be designed for vacuum pressure testing through several thousand psi application pressures for use with fluids or gas as the testing medium. We work hand-in-hand with service contractors the world over to provide the most user-friendly, multi-functional products on the market!

Leaders In Sealing Technology – SEALFAST® Elastomers
Mechanical Research & Design, Inc. fabricates, vulcanizes, and molds our SEALFAST® Mechanical and Inflatable Seals in-house to offer our customers the quickest and most reliable products. We provide two primary types of Joint Testers: Inflatable Joint Testers and Mechanical Joint Testers; their operational differences are detailed below. Inflatable Joint Testers are perfect for high frequency, rapid joint testing in low to high pressure tests. Mechanical Joint Testers are typically more economical and are ideal for low frequency or extreme high pressure tests which require pressure decay sensitivity. Both are used fairly interchangeably in transport piping systems, for flange weld testing, in refinery pipeline and vessel nozzle testing, and progressive pipeline installation where leak test validation is required.