Ductile iron grooved coupling includes 3 parts: housing, gasket, and track head bolts & nuts. The housing engages the grooves of standpipe ends, and the gasket encompassed by the housing forms a sealed chamber, with bolts and nuts tightened. So, a leak-tight structure of a self-restrained pipe joint is created.
TPMC is a reliable supplier of comprehensive fire system solution around the world.
