
Fire-System Signal Butterfly Valve
Geared butterfly valve with position-signalling arrangements.
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Hebei Diefei Valve Co., Ltd.

Wafer construction with a multilayer metal sealing arrangement.
The metal-seated wafer entry describes a triple-offset construction and a multilayer metal sealing arrangement. Diefei discusses stainless sealing elements and hard-faced disc surfaces for industrial fluid service. Buyers should confirm material-dependent temperature limits and the required flow-direction acceptance test; broad statements about unrestricted installation or wear-free operation are not assumed for every configuration.
Hebei Diefei Valve Co., Ltd. · Xingtai, Hebei
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Source reviewed: 2026-11-08. This directory summary organises the supplier’s published product information.
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Geared butterfly valve with position-signalling arrangements.
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