Piston Style

These gauges measure pressure drops using precision machined metal piston encapsulated in a PTFE seal. This creates similar seal to a hypodermic needle. Despite the accuracy to which these seals are machined, there is still a small amount of leakage that occurs around the piston. This is why a piston gauge should not be used for liquid level applications or leak detection systems. Instead, they are recommended for filtration systems and flow rate applications.

Advantages of Piston Gauges:

• Lower costs
• Higher temperature capabilities
• Higher-pressure ratings
• Higher differential pressure ranges