Filter regulator in the market since our products are qualitative and of utmost standards. Conforms to ISO 6953 - 1 Suitable for panel and modular mountings Non raising ' Press to Lock' adjusting knob for locking at any set pressure Diaphragm operated, relieving type Pressure compensated by Balanced poppet. Flow compensated in models R14 and R15 ( with venturi ) for faster response Good flow and regulating characteristics.