Release time:2013-10-09 Source:http://
Water Seal Gate Valve Model: DSZ61H/Y
Water seal valve principle:
1. It adopts the flange connection in the flange, and the two ends of the branch pipe are flanged or butt welded.
2. The stuffing box is designed to be a water-sealing structure and is connected to a 0.6-1.6Mpa water padding. The friction is small and the sealing is good. It can isolate the system from the atmosphere and ensure good airtightness.
3, open and close parts using double gate plate bi-directional elastic seal, easy opening and closing, reliable sealing, good performance.
4. The valve stem is quenched and tempered on the surface and has good corrosion resistance, scratch resistance and wear resistance.
5, simple structure, compact and reasonable, easy maintenance, long service life, beautiful appearance.
6, the valve work must be in full open or fully closed position, can not be used for regulating valve.
DS series water seal gate valve is suitable for pressure ≤ 10.0Mpa, working temperature ≤ 425 degrees (carbon steel), ≤ 550 degrees (alloy steel), working medium for water, steam or air pipeline, as an open and close device, especially suitable for Thermal power plant turbine vacuum, condensing system.
Structural features:
1, valve cover the filling chamber with a water seal structure (see Figure 1), when the interface into the pressure of 0.6-1.0MPA of water, the system can be isolated from the atmosphere, with good air tightness.
2. Water Sealed Gate Valve DS/Z series gate adopts parallel double gate plate structure or wedge type single gate plate structure, with reliable sealing, light opening and closing, and convenient overhaul.
3, water-sealed globe valve DS / J series valve has a compact structure, the sealing surface is not easy to wear, good sealing performance, short opening and closing time and so on.
4. The product adopts inverted seal structure, which can be repaired and replaced with seal packing without stopping the machine.
5, the valve connection has two kinds of flange and welding, the drive mode is manual, electric.
Press and use:
1, this series of valves only for full or full use, not allowed to adjust the flow.
2, this series of valves can be installed in the horizontal or vertical pipeline.
3, the valve should be cleaned before installation.
4. Be sure to align the water seal ring with the water seal fitting channel during installation. It is convenient to install the packing, and it is allowed to use graphite asbestos packing instead of reinforcing PTFE packing and packing pad. Choose iron valve quality and reliable.
5, When installing the electric valve, check and adjust the limit screw and the electric device's stroke control and torque controller.
6, when manually opening and closing the valve, clockwise to close, counterclockwise to open.
7, the valve applies hand wheel or electric device operation, no other leverage is allowed.
8, when used, should always be part of the oil in the rotating part, trapezoidal spiral spinning valve stem coated with grease.
9, this series of valves in accordance with the JB/T9092-2007 standard test before passing the factory passed the test, the installation unit does not need to disintegrate, can be installed directly using
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