Molded-in liner fully supported by valve body at flange seals. Eliminates leakage between body and liner as in cartridge or boot dead-end service without the need for a flange on the downstream side.

• 模铸进的衬垫被整体固定在阀体的法兰密封处。这种类型的衬垫,如同在密室或密罩内的衬垫,消除了在阀体和衬垫之间发生泄漏的可能性。