Z41H, Z41W American Standard valve

Shanghai crown ring Valve Manufacturing Co., American Standard valve, Z41H American Standard valve, Z41W American Standard valve pressure parts using precision casting process casting, surface quality handwheel malleable iron casting, modeling with the handle, due to increase friction, easy to open . And shows obvious "open" and "closed" signs. Fluid resistance, distressed sealing surface by the media and the erosion of the small brush. General valve has long been used on the market widespread leakage or rusting, the companies and the introduction of the European high-tech rubber valve manufacturing technology produced by the resilient seated gate valve, the valve seal to overcome the general poor, rust and other defects, elastic seat closure valve gate generated by the elastic deformation of the elastic trace compensation to achieve a good seal, the valve has a switch, lightweight, reliable sealing, excellent elastic memory and life and other significant advantages. It can be widely used for use as a regulator and shut-off devices on water, sewage, construction, petroleum, chemical, food, pharmaceutical, textile, electric power, shipbuilding, metallurgy, energy systems and other body line. I produced the American Standard valve: 1. open and close more effort. 2. The medium flows unrestricted, non-spoiler, without reducing pressure. 3. A simple shape, structure, length short, good manufacturing processes, a wide range. I. Product Overview: 1, features and benefits: ● valve pressure parts using precision casting process casting, surface quality handwheel malleable iron casting, modeling with the handle, due to increase friction, 2, easy to open. And shows obvious "open" and "closed" signs. ● stem nut with high nickel ductile iron, "T" shaped stem with thread and transmit torque. ● bonnet with a cup of oil, solid lubricants can be regularly updated to keep open and close easily. ● packing gland and gland split design to ensure concentricity of the valve stem. Stuffing reasonable design, ensure that the valve does not leak, 3, in line with environmental requirements. ● valve cover is provided on the ring, in line with the American Petroleum Institute API standards. ● valve flange connecting bolts using a stud, easy maintenance and removal. ● overall stem head forging, and the valve "T" shaped groove connection, to ensure the strength through. ● DN250 following castings precision casting, casting batch furnace has a number to identify, easy to track. Second, easy torque transmission structure: hand wheel nut torque transmitted through the valve stem to the stem, the valve stem A182F6 (1Cr13) forging and quenching, hardness HB220 ~ 250. To reduce the power loss in the process of transfer, stem nut A439GR.D2 selection of high nickel ductile iron or copper alloys (high nickel ductile iron has a self-lubricating), hardness smaller than the stem around HB50. Large-diameter, high-pressure valve in the stem nut, thrust bearing down together at the same time has the oil cup structure, regularly adding solid fat, maintain lubrication, so that the valve is in having a lighter torque. Third, the rational design of anti-leakage stuffing: flexible graphite valve packing selection and combination of braided graphite, both good sealing performance has a certain strength. Gland packing and packing gland is split design, spherical combination can automatically maintain concentricity, so the stem and down movement no scratches. There are few steps to prevent the gland packing into the stuffing box. Threaded stem tail is always on top of the filler, with the filler to prevent movement. Such stuffing ensure that the valve does not leak, in line with environmental requirements. Fourth, the club head and ram reliable connection: valve stem using A182F6 (1Cr13) overall forged a strong tensile strength, is not due to a failure to ensure that the stem head fracture leaving the gate stuck in the body You can not start. Stem head is provided with a valve cover seal secondary seal on the sealing surface, when the media has a particularity of time required to fully open the valve without any leakage. Stem head and ram connected by "T" shaped groove structure, both relative degree of freedom, so that the gate valve guide rib smoothly slide along the seat. Fifth, can replace some wear seat margin: valve seat and valve body connection is a threaded connection, easy maintenance and replacement. Static sealing seat surface precision-ground and with a special tool is screwed into the body, reliable seal. Gate valve seal sealing surface than a certain wide margin, and ensure that the valve is not used in the sealing surface of the bottom line before the gate valve seat sealing surface at the same height as the bottom line, the valve after a certain period of time and will not even wear reducing the need to ensure the sealing surface width. Source: American Standard valve http://www.ghval.com/product/zf/87.html Source: Shanghai Valve http://www.ghval.com/productlist/zf-1.html