Thermostatic membrane cassette steam traps (steam pressure balance) is the most commonly used advanced energy-saving traps. The response of the membrane cassette steam trap is very sensitive. When working, there is high temperature condensate in front of the valve, no steam leakage and significant energy saving effect. Its advantages are: automatic discharge of air, small size, not afraid of freezing, can be installed anywhere; easy maintenance, repair and replacement parts can be checked in the pipeline; maximum back pressure rate ≤ 80%, membrane box is strong, long service life. For steam main line, steam tracing pipe network, instrumentation with heat and small heating equipment, steam drainage, the use of a wide range. The main operating element of the diaphragm steam trap is a metal bellows filled with a liquid that has a lower vaporization temperature than the water's saturation temperature. When the device is just started, the pipeline appears low temperature condensate, the liquid in the capsule is in a condensed state. Valve in the open position. When the condensate temperature gradually increased, the membrane filled with liquid began to evaporate, the pressure within the capsule rise, the diaphragm moves the valve heart to close the direction of condensation in the condensate to reach saturation temperature, the trap completely closed, the membrane box with the steam temperature Variety of control valve switch, play a role in blocking gas drainage. Open the valve temperature is lower than the saturation temperature of 15 ℃ and 30 ℃ for the choice of two capsules.
PVC RESIN SG5
In terms of building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers, PVC was the world`s largest production of general-purpose plastics, and its applications are very widely. Widely used in all aspects.
PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light.
the Degree of polymerization of SG5 is 1000. usually we also call PVC Resin S1000. Its K-value is K67.
PVC RESIN SG5,Polyvinyl Chloride,Polyvinyl Chloride SG5,PVC Resin K67
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