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Design standardGB/T12235-89
Structure lengthGB12221
Connecting flangeJB79
Pressure temperatureGB9131
Test inspectionGB/T13927JB/T9092
Product overview
Insulation stop valve is mainly used in petroleum, chemical, metallurgical, pharmaceutical and other systems to transport high viscosity media that will solidify at room temperature. The insulation jacket of B / 41w jacketed insulation stop valve is welded between the two flanges of the valve, and two connecting ports of insulation jacket are set on the side and bottom of the valve. Insulation stop valve is especially suitable for pipelines in chemical and chemical fertilizer industries. Steam in the jacket can prevent medium crystallization.
Product features
Simple structure and unique appearance design. The sealing surface is hardened to resist wear. The valve neck bushing material has low friction coefficient, which greatly reduces torque and shaft surface wear, and eliminates surface scratch.
The valve cavity device is composed of two parts, rapid disassembly and in-situ internal repair. The inclined shaft structure and the optimal shape of the flow channel can reduce the change of flow direction and reduce the number of depressurization.
Integral surface hardening of valve seat: provides reliable closure and long service life of valve seat.
Threaded cover: prevent jamming and easy assembly and disassembly.
Valve shaft padding device: carbon infiltration is used.
The soft graphite of the ring with fiber cracks is used as filler for best leak proof and durability.
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