Ductile Iron Reducing Valve

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Product Description:

Cast iron valves
Size: DN40-1200 or 1.5-48' or above
Working Pressure: PN10/16/20/25, 150LB-2500LB
Suitable temperature: -45c~150c
Standard:
(1)Design and manufacture: DIN3352, BS5163, BS5150, ANSI B16.34, API600, API6D, API609, EN593, GB, T12238
(2)End connection: ANSI B 16.1, ASME B16.5, B16.47, B16.25, B16.34, JISB2212-JISB2214, DIN2543-2550, EN1092, AS2129, ISO 5211
(3)Wall thickness: API600, BS1868
(4)Face to face (end to end): EN 558, ASME B16.10, DIN3202, ISO5752, JIS, API609, MSS, BS5155
(5)Inspection and test: API598, EN12266-1, BS6755, API6D, ISO5208
Materialfor main parts:
(1)Body: CI, DI, WCB, ALB, CF8, CF8M
(2)Disc: DI, ALB, C95400, Rubber lined Disc, 1.2501, 1.4529, CF8M, CF8, Hastelloy
(3)Stem: SS416, SS410, SS304, SS431
(4)Seat: NR, Hypalon, EPDM, Neoprene, NBR, Wear-Resistant EPDM, Viton, Silicon, Heat-Resistant EPDM, WhiteNBR, WhiteEPDM, EPDM, PTFE
Coating: Fusion bonded epoxy coated
Connection type: Flanged type, Push-on type, Mechanical Joint type, Plain ends type
Sealing: Soft sealing or metal-to-metal seat, Flexible graphite
Operation: Manual, Pheunatic, Electric, Hydraulic and Pnewmatic-Hydraul
Appropriate medium: Air, water, sewage, steam, coal gas, oil
Packaging: Export polywood cases, or as per customers' requirements
Application: Fresh water, sewage, sea water, air, vapor, food, medicine, oils. Acids, alkalis, salt etc.

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Q:What are the advantages of an air operated ball valve in comparison with other types of valves?
The thrust bearing reduces the friction torque of the stem, so that the valve stem can be operated stably for a long time.The utility model has the advantages of simple structure, small size and light weight.Convenient operation, open and close rapidly: from fully open to fully closed as long as 90 degree rotation, facilitate remote control.Easy maintenance: ball valve structure is simple, the sealing ring is generally active, disassembly and replacement are more convenient.
Q:What does copper ball valve type Q11F-16T mean?
Q11F-16T, Q refers to the ball valve, 1 refers to the connection mode, the latter 1 refers to the straight through type, F refers to the sealing material, 16 refers to nominal pressure, T refers to the main material for copper material
Q:Structure design principle of fire ball valve
5 ball valve seat structure typical fire abroad professional production company common pipeline ball valve seat structure design of typical figure 9 - 12 shows, each seat structure fireproof structure design is reasonable, to ensure the seat piston effect of the sealing ring and the valve seat seal failure, valve seat leakage way at least. Figure 9 rubber sealing seat 1 to the left to the right in Figure 10 | rubber sealing seat 2 to the left to the right | Figure 11 rubber and plastic combined sealing seat to the left to the right in Figure 12 | plastic seat to the left to the right seat | fireproof structure design reasonable, can guarantee the way upstream pressure medium through the valve seat leakage at least fire, the best performance. In the design of fireproof structure of pipeline ball valve, the fire protection structure design of valve seat should be paid more attention to. The seat of fire with reasonable structure is the fundamental guarantee of fire safety in the pipeline valve in practical engineering, reasonable assessment of structural fire protection should be strictly in accordance with the API6FA/API607 standard fire test, test samples should not be sample makers, should be the verification institution with sampling, so as to ensure the rationality of the third party authentication and notarization of.
Q:For the master enlighten Q47 ball seat spring hole number is determined by how
Calculate each spring force, multiplied by the number. According to the manual valve design must be greater than the pressure, pressure ratio must be large than the material allowable pressure on the line. (emphasize that here because the production process of the spring, has value of many uncertain factors, so the actual production of the spring and you cannot calculate out the same, so please choose when to consider).
Q:What is the ball valve core?
The ball (ball valve as the cut-off valve in the marine and marine field), standard GB/T21465-2008 "valve terminology" is defined as: opening and closing parts (ball) driven by the stem, and around the valve axis for rotation of the valve. Can also be used to regulate and control fluid, strong shear force between the metal seat seal V type ball valve V type ball core and welding hard alloy, especially suitable for containing fibers, small solid particles and other media. Switch and multi way valve in the pipeline not only can flow, and flow diversion, flexible control of the medium, but also to turn off any channel to the other two channels. This kind of valve should be installed horizontally in the pipeline. In accordance with the way to drive the ball valve is divided into: pneumatic ball valve, electric ball valve, manual ball valve.
Q:Is the ball valve switch in front of the water meter or after the water meter?
It's in front of the water meter. What's the problem?.
Q:Water purifier water PE pipe and copper ball valve with lock nut connection reliability, and interface size requirements.
First, 170psi pressure is not great, not excessive extrusion and rupture of polyethylene, but there will be stress relaxation phenomenon, is a long time there will be some loose, suggest you nut and pipe with tight mechanical connection is good, the data has not been studied, can only give you a suggestion: 24-48 hours after the installation is complete then a proper tight.
Q:What are the differences and advantages between O ball valve and V ball valve?
2 、 the switch is quick and convenientThe ball just rotated 90 degree is completed fully on or off, so it can achieve rapid opening and closing.3, good sealing performanceMost of the valve seat by four poly ethylene (PTFE) elastic materials, commonly known as soft sealing valve. Soft sealing valve has good sealing performance, roughness and machining precision and sealing surface of the valve is not very high.4, long lifeAs a result of polytetrafluoroethylene (PTFE or F4) has good self lubrication, and friction coefficient of the ball is small. Due to improved processing technology to reduce the ball roughness, thereby greatly improving the service life of the ball valve
Q:Switch valve type, switch valve, ball valve or butterfly valve is good
Ball valve and butterfly valveBall valve is used to regulate and control fluid, strong shear force between the metal seat seal V type ball valve V type ball core and welding hard alloy, especially suitable for containing fibers, small solid particles and other media.Butterfly valve, also known as shutter valve, can be used to control the air, water, steam, a variety of corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid flow. On the pipeline, mainly from cutting and throttling.
Q:What do you mean by 266 in the 266 brass ball valve?
In order to consider the cost, some manufacturers put in different environment in accordance with the actual need in addition to the basic properties (such as gas safety requirements, key strength, air conditioning temperature, focus on material and penetration, ordinary water can have the basic properties, can economic production and product classification), but in the national standard of the same specifications or inside them the same type,

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