Supplying Q11W specialized in manufacturing series of small-diameter valve

Small-diameter valve advantages: 1, small flow resistance. Body internal media channel is straight, medium flows in a straight line, small flow resistance. 2, more effort when opening and closing. In contrast with the shut-off valve, because both the open or closed, the shutter movement direction are perpendicular to the flow direction of the medium. 3, height, long opening and closing times. The shutter opening and closing stroke larger drop is carried by the screw. 4, easy to produce water hammer phenomenon. The reason is that long off time. 5, the medium can flow in any direction to the sides, easy to install. Both sides of the valve channel is symmetrical. 6, the structure length (the distance between two connection lines between the end face of the housing) is small. 7, the sealing surface wear, affecting life. When opening and closing, the gate and the seat sliding friction between the two sealing surfaces, under pressure to media prone to abrasion and wear, affect the sealing performance and shorten life. 8, more expensive. More contact with the sealing surface, processing more complex, especially the sealing surface of the gate seat difficult to process, and more parts. 9, simple shape, structure, length short, good manufacturing processes, a wide range. 10, compact, valve rigid, channel flow, flow resistance small number, the sealing surface of stainless steel and tungsten carbide, long life, the use of PTFE packing. Reliable sealing. Lightweight and flexible operation. Installation points: 1), the installation position, altitude, direction of imports and exports must meet the design requirements, the connection should be firmly tight. 2) mounted on various types of pipe insulation manual valve handle shall not be down. 3), must be visually inspected prior to installation of the valve, the valve plate should be consistent with the provisions of GB 12220 of the existing national standards, "Universal Valve logo." For working pressure greater than 1.0 MPa and the role played off valve in the main pipe, the installation should be the strength and rigorous performance tests, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage in compliance. Tightness test, the test pressure of 1.1 times the nominal pressure; test pressure in the test duration should be consistent with GB 50243 standards, with the valve sealing surface leakage in compliance. Implementation of standards 1, product standards, "Universal Valve Flanged iron gate" GB / T 12232-2005 "General requirements for steel valves" GB / T 12224-2005 "Pipeline steel plate valve" JB / T 5298-91 " inspection and test valve "JB / T 9092-1999" drinking water distribution equipment and protective materials, safety evaluation criteria of "GB / T 17219-1998 2, engineering standards," Building Water and Heating Engineering Construction Quality Acceptance "GB 50242-2002" Ventilation and Air Conditioning Engineering Construction Quality Acceptance "GB50243-2002 JB / T 1712-2010 gate parts filler and filler cushion - 2226KB GB 15558.3-2010 Buried polyethylene (PE) piping systems 3 Part: valve - 3439KB JB / T 2769-2010 high pressure valve parts threaded flange (booklet complete and clear scan version) 948KB JB / T 1741-2010 Valve Parts top center (booklet complete and clear scan version) 724KB JB / T 1726- 2010 valve parts valve cover and split ring (booklet complete and clear scan version) 1022KB JB / T 1703-2010 Valve Parts bushing (booklet complete and clear scan version) 771KB JB / T 3595-2002 Power Station Valve General requirements. doc 1423KB JB / T 5208-2010 Valve Parts spacer ring 58KB JB / T 1700-2010 Valve Parts nuts, bolts and plugs (booklet complete and clear scan version) 1707KB GB / T 12239-2010 Industrial gate metal diaphragm (booklet complete and clear scan version) 2440KB JB / T 6903-2010 Ultrasonic testing of steel forgings valve (not clear) - 1612KB GBT 22652-2010 valve sealing surface surfacing procedure qualification (not clear) - 3920KB GB / T 8464-2010 iron system and copper thread connecting valve (scan version is not clear) - 8134KB JTJ 308-2003 Marine valve design specifications 2458KB JB / T 6902-2010 Valve liquid penetrant inspection 318KB GB / T 13927-2010 Industrial Valve pressure test .pdf (booklet complete and clear scan version) 3499KB GB / gate length of the structure welded connections .pdf 314KB GB 13927-1992 General valve pressure test .pdf T 15188.1-1994 gate of 264KB DB33 / T 730-2009 Gas Pipeline brass valve quality requirements 535KB JB / T 2778-2010 high pressure pipe valve parts and fasteners temperature mark (booklet complete and clear scan version) 99KB JB / T 5211-2010 Valve Parts Valve seat 175KB JB / T 7760-2010 Valve packing test specification 241KB JB / T 7248-2010 Valve cryogenic steel castings 513KB JB / T 2772-2010 Valve Parts High Pressure Blind 186KB JB / T 1718-2010 gate parts washers and lock washers 308KB GB / T 6567.4-2010 Technical Drawing tube Graphical symbols road system gate valves and control elements 764KB JB / T 10768-2007 air conditioning system with an electric gate 7479KB GB / T 6567.5-2010 Graphical Graphical symbols Technical drawings piping system piping, fittings and valves and other symbols of isometric drawings painting 294KB JB / T 6440-2010 Valve pressed steel casting radiographic testing 3878KB JB / T 93-2010 gate Parts wrench handle and hand wheel (complete booklet clear scan version) 3263KB GB / T 12227-2009 common gate Ductile technical conditions 148KB EJ / T 531-2001 identified nuclear power plant safety level gate drive device 2007KB GB / T 308-2004 Gate Model methodology 247KB GB / T 19278-2003 thermoplastic pipe fittings valve common definitions and terminology - 715KB GB / T 12226-2005 common gate gray iron castings 110KB GB / T 21465-2010 valve term - 4873KB GB / T 21465-2010 valve term - 4873KB JB / T 5300-2010 industrial use valve material selection guidelines (booklet complete clear scan Version) 7545KB JB / T 450-2010 Forging angle type pressure valve technical conditions (booklet complete and clear scan version) 1129KB YB / T 5136-1993 Valve chrome vanadium spring steel wire 170KB YB / T 5102-1993 Valve oil quenching - tempering carbon spring steel wire 101KB SN / T 1455-2004 outlet valve inspection procedures 91KB SHS01030-92 (English) valve maintenance and overhaul procedures 150KB SH / T 3064-2003 Petrochemical Steel common gate selection, inspection and acceptance 288KB SH / T 3064 -2003 petrochemical steel universal gate selection, inspection and acceptance booklet complete and clear version 484KB SH / T 3064-2003 Petrochemical Steel common gate selection, inspection and acceptance 493KB SH 3518-2000 valve inspection and management of scanned version 753KB SH 3518 -2000 valve inspection and management of text version 60KB SH 3064-94 (Older pdf) Petrochemical Steel common gate selection, inspection and acceptance 162KB QJ 1611-2009 cryogenic valve design criteria 439KB JB / T 10529-2005 ceramic sealing valve technical conditions 526KB JB / T 7746-2006 compact steel gate 604KB JB / T 6446-2004 vacuum valve 571KB JB / T 5263-2005 Power Station Valve castings technical conditions 303KB CJ / T 180-2003 household manual gas valve 619KB CB / Z 800-2004 Marine Valve Selection Guide 540KB GB / T 19672-2005 pipeline gate valve technical conditions 1010KB GB / T 12230-2005 Tongcheon gate stainless steel castings 330KB GB / T 12227-2005 common gate iron castings 78KB GB / T 12226-2005 common gate gray iron castings 41KB