Piston to valve clearance isn't a concern in a non-interference engine, ... For the sake of this article, you can assume that most two-valve engines are an interference type.

Diaphragm flushometers include the Royal, UPPERCUT, Regal XL and Sloan brand valves; the Crown and GEM•2 valves are piston operated. Sloan offers flushometers for every type of environment from normal ...

Piston Spool Valves A spool valve features seals along its surface. By actuating the valve, the spool shifts, causing the seals to travel down the bore and opening the ports to allow for airflow.

When servicing refrigeration or air conditioning systems that incorporate reciprocating or piston-type compressors, worn compressor rings and/or leaky compressor suction or discharge valves can cause ...

The problem: A piston-type reciprocating compressor has had valve damage, or the valves just are not sealing for some reason. This low-temperature refrigeration system has a thermostatic expansion ...

Xi3, the company behind the $1,000 Piston Steam box, has shed some light on its relationship with Valve after the latter apparently attempted to distance itself from the product today.