The key specifications of the HLN, Main Flow Valve, 1 1/2 are — Max. Working Pressure: 20Kg/cm²; Op. Temp.: -20 to 205°C; Type: Normally Closed; body and Piston: Aluminium. These specifications are based on the standard GEM Equipments design; always verify against your machine's requirement before use. GEM Equipments Pvt. Ltd. is an ISO 9001:2015 certified, India-based manufacturer (since 1984) of compressed air dryers, cooling towers, industrial chillers, and compressed air treatment accessories, headquartered in Coimbatore, Tamil Nadu.