产品原理
▪ Lip of rubber gasket inclined toward inside presses pipes after tightening bolts even when there is no pressure inside pipes.
▪ When inner pressure is generated, pressure at sealing hole also increases through lip’s fluid pathway, and this compresses pipes tighter.
▪ Grip type holds pipes tightly with double grip (serrated grip and plain grip at both each side)
▪ Slip(flexible) type allows contraction and expansion of pipes.