The model S-500 is a gas or air pressure reducer-regulator for a variety of aplications.

Inlet pressure up to 25 bar (362.5 Psi) and outlet pressure from 0.1 bar to 15 bar (1.45 to 217.5 Psi), with maximum flow for natural gas of 18,000 Nm³/h (635,000 Ncfh).

With high outlet pressure shut off device.