The key specifications of the Silencer, 1/2" SPD 010-015 are — Material: ASME SB221/A204; Standard: ASME SEC - VIII DIV 1; Dimensions: Ø25x62mm(l). 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.