hydraulic directional control valve BV-LY-0211

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hydraulic directional control valve
10 years history
18 months after sales service
GB/JB/ISO/CE/BV certificate

hydraulic directional control valve manufacturer

The data point :

Nominal pressure :PN10-16

Nominal diameter:DN50mm-1000mm

Suitable medium:water/gas/oil/air etc

Working temperature :-23~121

The features :

Wafer ,lug or U type flanged body style fit between FF or RF flanges

PTFE bushing ensure the maximum shaft support and centralized alignment

360 degree polished disc assure positive on-off

Hard -backed cartridge seat

One piece shaft ,pinned and splined disc

Universal ISO5211 mounting platform

The material:

Part name	Material
Body	Stainless steel,Gray cast iron ,Ductile iron,Carbon steel,Aluminum bronze etc
Disc	Cast iron ,Stainless steel ,Plated ductile iron,Carbon steel,Aluminum bronze etc
Stem	Carbon steel,Stainless steel
Seat	PTFE,EPDM,NBR,NR,Viton etc
Bushing ring	PTFE,Aluminum bronze

Q: Proportional valve why than other small pipeline valves: 3.8 valveGraphical representation of numbers, names, symbols3.8.1 angle valve at room temperature3.8.2 cold angle valve for low temperature use3.8.3 stop valve at room temperature3.8.4 ball valve often 9 temperature3.8.5 valve at room temperature3.8.6 butterfly valve at room temperature3.8.7 check valve flow from blank triangle to non empty triangle3.8.8 pressure reducing valve, small triangle for high voltage end3.8.9 throttling valve is needle valve3.8.10 three-way valve for normal temperature use3.8.11 four way valve used at normal temperature3.8.12 safety valve spring type safety valve3.8.13 trap actual drawing, you do not have to draw arrows3.8.14 inflator, cold box, little gas huff and puff, safe useValve for normal temperature of regeneration valve of 3.8.15 reverse stop valve3.8.16 reverse loading cold angle valve

Q: What does the J41Y-100I valve type mean?: J41Y-100I flange type chrome molybdenum steel valve forgingJ represents the cut-off valve, 4 (flange) on behalf of his connections, 1 (straight) on behalf of his structure, Y (seal) on behalf of his seat sealing surface or liner material code, 100 is the nominal pressure value, I (chrome molybdenum steel) is the code of the body material

Q: How to identify the good or bad of the valve, without pressure test and instrument?: You can see what the material inside the valve ~ basically copper heart relatively durable, solid ~!

Q: the use of natural connections, is strictly prohibited counterparts. What do you mean by "strong opposition"?: Refers to the installation of the interface dislocation, misalignment or installation of the wrong size and forced connection, resulting in installation stress exists, in use, it is prone to abnormal damage.

Q: What are the specifications of the valves PN25, DN50?: Upstairs professional level can be seen very solid.... Clap your hands... Popular speaking, that is, the valve bore is 50, resistance to pressure is below 25, is no problem.

Q: 1) the valve plate, valve gate valve, the difference (my personal understanding is that if it is on the ball, called the valve, if the valve is called the gate, is actually a meaning in different valve called, please help me understand it right?)2) valve clack. What's the spool?3) the valve seat is welded inside the valve, or is it directly installed inside without welding?4) when opening the valve, if the valve seat is not welded, then, under the pressure of the medium, why not open the seat?.5) excuse me, pressure self sealing (my personal understanding is that when the valve is closed, the valve plate and valve seat depend on the pressure of the media, and they fit together to seal the effect: The first question is basically the same, and you can understand that for the secondThe 3,4 problem, there are several seat connections, such as thread connection (threaded, the valve seat is connected with the valve), modular connection (such as adding the cage to a fixed seat, the crushed) as one of the body and there is (some welding). The valve seat must be fixed.The fifth question, you are right!

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 do letters represent in the QF-2 and PX-32 valve models?: Other letters of the valve indicate explanations and regulations! You never ask again when you ask again!

Q: How do you understand the valve Z41X-16?: This is a standard set, the landlord himself to check the JB/T308 standard, Baidu library, some, and is free to download:JB/T 308-2004 valve type method of preparation clear EditionZ = gate valve4 = connection: flange1 = structural form: open rod single gateX = sealing surface material: Rubber16 = nominal pressure: 1.6MPa16 there is no letter behind it indicates that the body is made of cast iron

Q: What does valve 41F-40C mean?: 4: refers to the flange connection;1: on behalf of the structure of the form, different valves have different meanings;F: the sealing material is fluoroplastic;40: nominal pressure is PN40bar;C: the valve body is made of carbon steel, but the valves above PN25 shall be omitted from CAccording to the incomplete model provided, it is estimated that the ball valve is Q41F-40

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