| 摘要 |
The safety valve (10), suitable to be fitted onto a hydraulic control unit of a boiler, comprises a valve body (11) made of plastic material, having an inlet opening (12) and an outlet duct (13) for a water flow; the valve (10) further comprises a plug member (15) for shutting off the flow, and a spring means (16) designed to bias the plug member (15) to a closed position against a watertight seat (17) coaxially arranged to the inlet opening (12) for the flow. A metal tubular connection member (18) is provided at the inlet opening (12) of the valve body (11), for connection to the hydraulic control unit, the connection member (18) being provided, on a first end, with watertight coupling means for coupling to the inlet opening (12) of the valve body (11), and, on its second end, with connecting means for connection to the hydraulic control unit.
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