Flange plunger valve Description: The design and manufacture of flange plunger valve is to solve the shortcomings of ordinary globe valve, the general cut-off valve sealing blank filler, can not rule out the phenomenon of leakage, the next seal from the valve and the valve Body channel plane or angle seal (metal seal), sealing surface due to wear and tear between the metal leaks, and maintenance difficulties; structural features of the plunger valve is a stainless steel plunger, two elastic seals and a metal upper and lower and a metal Frame composition, the sealing effect by the close cooperation of the plunger and seal to achieve, the plunger inserted in the two seals, the sealing area is much larger than ordinary globe valve; switch plunger valve, the plunger slowly moving in the seal, contact When the piston is closed, the plunger is inserted into the lower seal ring to cut off the flow passage. When the piston is opened, the plunger is still hidden in the upper seal ring and remains isolated from the outside without leakage. Sealing ring is a science and technology products, is a key part of the plunger valve, which consists of PTFE, graphite, high elastic plastic and so on, after millions of reciprocating tests, still can provide good sealing performance. At the same time the valve opening torque is small, sealing area, suitable for wide media, adapt to high temperature, reliable sealing, long service life, easy maintenance and so on. Widely used in petroleum, chemical, power, pharmaceutical, food, textile, printing and dyeing, boilers, machinery and other industries. Flange plunger valve structure and instructions for use: The seal ring is the heart of the flange plunger valve. Mainly contains PTFE and a high-quality flexible plastic and graphite. Not only the surface of the ring with graphite, graphite stretch and the entire ring of the ministries. The sealing ring therefore retains particularly excellent self-lubricating properties over its entire service life. The applicable temperature of the sealing ring is from -10 ℃ to 350 ℃. Accurate application can refer to the data within the pressure / temperature diagram. Seal of the media: Strong inorganic acids, food, heat transfer oil, water, steam, gas, oil solvent and many other media. Seals with high strength, high wear-resistant, resilient, accurate size and has good recovery characteristics, so there is excellent shape and performance to maintain long-term life. Leakage treatment of flanged plunger valve: If leakage occurs after a long time, the valve should be closed, and then diagonally slightly tighten the nut on the valve cover until the leakage disappears. Attention! Never screw nuts all at once. Updated flange plunger valve maintenance methods: When the nut on the valve cover has been screwed in the end can not eliminate the leakage phenomenon, it is necessary to repair, repair, you need to change the seal. Instead of separating the leaky plunger valve body from the pipe, "replacing" here means replacing the old one with a new one. This program requires no special equipment or technicians. Every skilled worker has to replace the sealing ring without any problem. To make the installation easier, we provide a simple tool - lantern (bulkhead, seal) extractor. The steps are as follows: 1. Cut off the upstream fluid Open the valve (all open); 2, remove the nut, turn the hand wheel in the closing direction, the bonnet out; 3, to be covered when the bonnet stud hole When the stud bolt, the valve cover around the stem to a small angle, so that the valve cover flange on the bottom face of the stud head; 4, the opposite direction of rotation of the hand wheel, so that the bonnet arrived in the stud, continue to anti Turn the handwheel until the plunger is unplugged on the seal ring; 5, remove the upper seal ring, frame, use the screwdriver to lift the lower seal ring with a lantern extractor; 6, replace the old seal ring with the new seal ring, - Septum - the upper ring on the valve body into the sequence; 7, wipe the inner surface of the seal ring and the outer surface of the plunger, the plunger with the valve cover, stem and so on together, screw on the nut cover, Pressure on the ring; 8, turn the handwheel toward the closing direction The plunger is pressed into the sealing ring; 9, according to "re-tighten the maintenance program," a handle
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