Standard or Nonstandard: Standard Structure: Butterfly Pressure: Low Pressure

Standard or Nonstandard: Standard Structure: Butterfly Pressure: Low Pressure System 1

Standard or Nonstandard: Standard Structure: Butterfly Pressure: Low Pressure

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 111 PCS

Supply Capability:: 1000 PCS/month

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Packaging & Delivery

Packaging Detail:	Wooden Box with Plastic and Blue PP Bags enclosing the valve, with some lubricating oil covering every valve(you'd better not touch it with your hand directly
Delivery Detail:	5-7days after confirmation

Butterfly Valve

1. Brief Introduction

Soft Seal butterfly valve is my company under current domestic FGD system design products.

To meet the limestone and gypsum slurry grout corrosion, and the calve stem plate using a special corrosion-resistant alloys, high-valve seat wear rubber meet the large number of suspended particles in the liquid on the valve seat erosion. Therefore products with high wear-resistance and anti-corrosion of high. The product is designed to address user requirements, targeted and high reliability. Suitable Mediums: Lime cream, sulfur dioxide, lime slurry paste, process water and other corrosive media.

2. Butterfly Valve Technical Data:

Technical Data:

Nominal Diameter DN(mm): 50(2")-1000(40"), 50(2")-800(32")

Nominal Pressure PN(MPa): 1.0-1.6

Testing Pressure(Mpa): Shell: 1.5~2.4,

Sealing: 1.1-1.76,

Suitable Mediums: Fresh Water, Sewage, Sea Water, Air, Steam, Food, Medicine, Oils, Acids, etc.

Working Temperature: -35~+150°C

Seal: Soft and Metal way

End connection: Wafer and flange, welding

Actuated: hand, hndwheel, worm gear....

Structure: wafer, centrt line-type, double eccentric, triple eccentric

3. Butterfly Valve Main Parts:

Name	Optional Materials
Body	Ductile Iron(DI, Q), Gray Cast iron(CI), Cast Steel(WCB), Stainless steel(CF8/CF8M), Aluminum Bronze(T), etc.
Disc	Ductile iron nylon coating(N), Plated ductile iron(D), Stainless Steel, CF8(P), CF8M(R),Aluminum bronze(T), Titanium Steel, Carbon Steel, etc.
Shaft	416SS, 316SS, 304SS, CS45#coating with Ni,P
Actuator	Cast iron worm gear reducer, Cast aluminum worm gear reducer
Stem	Stainless Steel, carbon Steel
Bushing	Lubrized Bronze
Seat	Nr, Hypalon, Neoprene, Wear-resistant Rubber, NBR, PTFE/Telfon, VITON, EP, EPDM

Q: For example, the knife gate valve, PZ73X-10C, DN50 torque is 5, torque is what role? What units?: The opening moment (torque) is the force or torque that must be applied when the valve is opened or closed. Need to open and close the valve when the sealing pressure than the formation of closed and valve seat sealing surface between the two, but also to overcome between the stem and the packing between screw stem and the nut, the valve stem friction end bearing and other friction parts. Therefore, certain closing force and closing torque must be applied, and the required opening and closing force and opening and closing torque during the valve opening process are varied, in which the maximum value is at the closing instant or the initial opening moment. Design and manufacture of valves, should strive to reduce the opening and closing force and opening and closing torque.The open torque can be obtained by means of calculation or measurement, and can be obtained by hand torque measurement.

Q: How about the valve?: The British Hudson Valve Co. Ltd. (HUDDERSFIELD VALVES LIMITED), founded in 1964, its predecessor for the British metal parts company (ART METAL FABRICATION LTD AMF, referred to as LTD), located in the world famous one of the UK's Huddersfield valve production center (HUDDERSFIELD), the main production of various kinds of valve, valve cage valve and other valve manufacturers supporting. .

Q: What does "TD671F" mean?: You should type is wrong, or I should be D671F, with very limited knowledge and scanty information, this type of mean (D) pneumatic butterfly valve (6) of the clip (7) sealed the middle (1) fluorine plastic (F). There should also be a number of pressure figures and body material. For example, D671F-10C later means that the pressure is 10 kilograms (or 1.0MPa) and C represents the carbon steel

Q: If the valve in the pipeline throttle, such as open and open 50%, the valve before and after the pressure of how to calculate, how the flow changes?: the preset pressure after the valve, thus maintaining the dynamic pressure balance valve, and non compressible medium, mainly for the purpose of regulating the flow, especially in the petrochemical industry, power industry, if the specific calculation of a valve is more difficult, but a lot of data will provide the valve valve opening and flow of the corresponding graph, the landlord is really interested in learning more, can go to the Xinhua Bookstore to find the valve selection manual valve related content, which will introduce calculation method.

Q: What does the ZH41 valve ZH41 mean, and what other specifications?: Is the model wrong? The correct one should be Z41HGate valve, hand flange connection name, rod type single gate, sealing surface is alloy steel

Q: What is the flow medium of the valve?: What is the valve. If the water through the valve, the medium is water. I hope I can help you.

Q: How to carry out the valve strength test and air tightness test?: All the factory must go through the valve pressure test, strength test for 1.5 times the nominal pressure, closed at both ends of the valve import and export, fully open the valve test pressure for 1 - 5 minutes, see the specific situation, also called low pressure seal test seal test pressure seal test, 0.6MPa. Also 1.1 times the seal hydrostatic test, specific, you see, JB/T9092 standard, very detailed

Q: What is a hot melt valve?: The valve is hot melt and ppR/PE plastic pipe connecting with hot melt connection valves, general valves generally use the threaded connection or flange connection.

Q: What are the general types of valves?: There are generally 3 types of ball valve, globe valve, ceramic core valve

Q: Why can't the clip type check valve be directly connected with the pipe mouth or other valves?: The clip type check valve is made up of two discs to prevent backflow.If the clip check valve is connected to the other valve, the disc may touch the valve and cause the check valve not to be fully opened or closed. This is a preliminary analysis of "enter the valve", for reference only!

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