Butterfly Valve Without Pin Ductile Iron DN340

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 set

Supply Capability:: 50000 set/month

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Centerline structure,pinless double half shaft design.
Disc has two-way bearing, no installation direction requirements.
Non-backed replaceable seat with good performance and a longer working life.
Square and short neck for lable use and cost saving.
Easy installation, no need flange gasket.

Size	DN50mm-DN600mm
Design standard	API609/EN593
End flange	DINPN10/PN16, BS4504PN10/PN16, ANSI class125#/class150#
Face to face	API609/EN558-1
Top flange	ISO5211
Body	Ductile iron/Cast iron
Disc	Ductile iron/CF8/CF8M/C95400/C95500
Stem	SS420
Seat	EPDM/NBR/Viton/PTFE
Actuator	Bare shaft/Lever/Gearbox and handwheel
Coating	Epoxy/Nylon/PTFE
Pin	With out pin
Suitable medium	Water/Seawater/Sewage/Air/Foodstuff/Oil

Q: What is the difference between gate valves Z41W-16R and Z41W-16P?: According to JB/T308P stands for Cr-Ni stainless steelR stands for Cr-Ni-Mo stainless steelCr-Ni stainless acid resistant steel has CF8, CF3, F304, F304L, which applies to the medium of work, such as nitric acid oxidation acid.Cr-Ni-Mo stainless acid resistant steel has CF8M, CF3M, F316 and F316L, which is suitable for working medium, such as acetic acid and reducing acid.

Q: How big valves and fittings need flange installation, such as gate valves, DN50, DN80 and the like?.: Flanges for piping above DN50,DN50 (below) can be made of wire or flange (flange for pressure piping)

Q: Why does the fire hydrant box in the air defense area need to be added with gate valves?: Code for design of basement for civil air defence GB50038The installation and installation of the protective valve on the water supply line of the 6.2.13 air defense basement shall comply with the following requirements:OneWhen the water supply pipe from the entrance into, should be set up in the inner protective sealing door;

Q: Stainless steel gate valve DN150 200300 weight, who knows?: It depends on different materials and pressure levels. 304 material, high pressure weight will be much heavier.

Q: What does the gate valve 150# mean? Is it stress PN? What's that, PN16 or?It's better to have some specific links, thanks!: It's the stress PN, the 2.0MPA150# is the ANSI standard -- American National Standards InstitutePN is nominal pressure

Q: What does the gate valve SZ45X-1.0 stand for?: Z- stands for gate valves, 4 for flange connections, 5 for wedge wedge single gate, X for rubber seals, and 1.0- for PN1.0MP

Q: Which is the most expensive, check valve and gate valve?: In the case of DN50 Z15T-16 DN50: screw valve 46.200 thread copper bar gate valve Z15T-16 DN50 52 Z45F-16 DN50 97 flange valve flange valve rod Z44T-10 DN50 169 Z45T-116 DN50 flange valve dark bar 173 thread swing check valves DN50 52.090 thread straight type check valve DN50 57.280 flange screw check H44T DN50 129 flange valve lift check valve H41T-16 DN50 124

Q: Acid resistant alkali valve gate valve: D is small in shape and beautiful in appearance.E operation is simple and labor-saving.

Q: Fire protection gate valve from the wall how many distance there is no regulation?: Don't know don't answer. "According to the provisions of article 6.2.13 GB50038-2005" code for design of basement for civil air defense engineering, into or through the door unit between the door closed wall should be set up in the inner side or two nominal pressure pipeline is not less than 1.0MPa, the spool is stainless steel or copper gate or globe valve water pipe from the air enclosure structure. The installation position from the wall should be not more than 200mm.

Q: What are the differences between the gate valve and the cut-off valve?: The operating principle is different. The stop valve is an upward stem type, and the handwheel rotates and rises with the stem. Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open, the cut-off valve is not the same. The gate valve has no inlet and outlet direction requirements, and the cut-off valve has the required inlet and outletAt the same time, usually with the cut-off valve instead of gate valve, but the valve can also be used instead of cut-off valve. Valve sealing performance better, but the size is generally not large, the size of the gate valve can be done great.The main difference between them lies in:1, different structure, gate valve structure is more complex than the height, larger size, from the appearance point of view than the cut-off gate valve is short and high, especially the gate height space needs a higher open bar, the selection in the installation space under the condition of limited attention to.2, sealing surface, valve in the opening and closing valve and the valve seat surface always contact and friction between the sealing surface, and thus easy to wear, especially in close off the valve when the valve before and after the great pressure, sealing surface wear is more serious. And the valve once the valve is in open condition, it's seat and disc sealing surface between, not in contact,

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