Products

We specialize in hydrostatic testing and pneumatic testing, and offer a complete line of valve testing systems and services that will satisfy all your testing needs.

hydrostatic testing
Model 1400

Flanged Valve Testers

Our 1400 series performs both pneumatic and hydrostatic testing. They are both rotating and non-rotating flanged valve testers, and exert no external loads on the valve bodies during the testing process.

hydrostatic testing
Model 1200

Economic Valve Testers

The 1200 series is our most economical valve testing solution capable of both pneumatic and hydrostatic testing. This non-rotating flanged valve testing system exerts no external loads on the valve bodies.

hydrostatic testing
Model 1500

Hydraulic Flange Seals

Our 1500 series patented Hydraulic Flange Seals systemically increase safety and productivity because they complement our Model 1400 Flanged Valve Test Systems.

pneumatic testing
Model 600

Multi-Purpose Valve Testers

Our 600 series clamps and tests valves, fittings, pipe, and related pressure-bearing parts between centers. Capable of doing both pneumatic and hydrostatic testing, this model is best suited for testing gate, globe, plug, ball, and check valves.

safety relief valve testing
Model 900

Safety Relief Valve Testers

The 900 series, with our unique "J" tube design, performs both pneumatic and hydrostatic testing. This series provides the most reliable method available anywhere to test Safety Relief Valves in accordance with the applicable specifications.


Calder Tester machines perform both hydrostatic and pneumatic testing. Our systems can do shell tests, seat tests, re-seat tests, and leak detection tests, and they can do it on all types of valves. Calder Testers' precisely engineered and manufactured systems will provide you with the best equipment anywhere on today ’s market.

Contact us today to find out how we can help you.