平板闸阀电子样本目录1. 平板闸阀、型号编制说明 Flat-Plate Gate Valve、Model schedule illustration
2. 产品性能规范、结构特点 Products performance specification、design features
3. 产品主要参数 、工作原理 Main parameter of the products、Working principle
4. 主要零件材料 Major parts material form
5. 平板闸阀主要外形尺寸 Flat-Plate Gate Valve Main size of outside
6. 注水阀 Water injecting valve 高压平板闸阀 High pressure fllat-plate gate valve
7. 补偿式双闸板平板闸阀 Fcompensation double parallel gate valve
8. 燃气平板闸阀 Gas flat-plate gate valve
9. 电动楔式闸阀 Electric wedge-style valve
10.排渣闸阀 Row of dregs valves
11.真空、水封闸阀 Water-seal vacuum valve
12.升降式止回阀 Fluctuation type check valve
13.旋启式止回阀 Carson Kai check valve
平板闸阀产品结构特点Products design features
Cast and weld two structures with the body
The seal ring uses the floating seat ring structure with o-sear ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed;and the open-close moment with this structure is 1/2 that of the common valves only,able to lightly open and close valves.
The seat ring uses the sealing face inlaid with PTFE,so has dual seals of PTFE to metal and metal to metal, the PTFE sealingface also acts as removing the dirt on the wedge disc.
For the valve with the metal to metal seal,there is grease injector outside of it,grease gets into the sealing face through the injector and the seat ring to have the valve up to null leak.
The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration.
When fully opened,the valve's channel is smooth and linear ,with an extremely small flow resisting coefficient and no pressure loss,and the pipeline can be cleaned with hair-ball through it.
This valve uses the packing structure with the ability of self-seal,needs no constant adjustment,features very light open and close and a reliable seal An assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a true null leak,settling the problem for the packing place of universal valves to be easiest leak outward.
Automatic removal of the high pressure in the internal cavity when the valve is about to close(see the working principle diagram)for the details) so as to ensure safety.
Fully sealed structure leaves a good protective property,suitalbe for the requirement of 24-hour duty.
An indication rod or viewing window is set Ascend and descend stemwith the valve to whow the open-close condition,Revolve stem with the valve Use a sealed gear-driving open-close indicating mechansim.
The external surface of the directly built-in valve is corrosion resisting treated with epoxy coal bitumen and can be the same duration as the pipeline.