Steel Partial Threaded Straight Valve Spindle

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 1 Piece pc

Supply Capability:: 8000 Pieces Per Month pc/month

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‍Packaging & Delivery of partial threaded valve spindle

Packaging Details: standard export package or make the special according to your requirement
Delivery Detail: usually keep in stock within 15 days

Specifications of partial threaded valve spindle

1.high precision processed

2.low price always

3.fast delivery

4.good service

Nominal pressure: 2.0MPa

Actuating Medium: Water, non-corrosive liquid, gas

Working pressure: 0.01-2MPa for water or oil; max working pressure for gas: 0.8MPa

Operating temperature: -20 ° C ≤ t ≤ 120 ° C

Pipe Threads comply with: Standard GB/T7307-2001,ISO228

Q: What causes the stem to be stuck?: 1. is the pressure plate, the root screw is too tight, you can loosen the screw, you can add a lubricant in the packing and stem connection.2. may be too tight packing, but there may be stem rust.Of course, the most important question is what you operate is the valve? Different types of valves are available for various reasons.

Q: DN>=50 valve, stem and bracket between the use of lubricated bearings, and stem exposed part should be dust-proof measures to prevent atmospheric corrosion. TwentyDoes it mean that all DN>=50 valves, valves and supports must be lubricated with bearings, or that only the bearings are used between the valve stem and the bearings?: When the utility model is used, a thin layer of grease is applied on the exposed part of the valve stem, so that lubrication can not only be played in operation, but also can prevent the exposed part of corrosion.

Q: Pipeline ball valve in the valve stem generally choose what material?: Generally, there are the following choices: AISI 4140, A182, F6a, 17-4PH, A182, F316, A182 304, AISI 1040, ENP

Q: The smallest diameter of the stem refers to the diameter of the contact portion of the stem packing. The minimum stem diameter refers to the diameter of the stem slot of the valve stem: This is machining knowledge, you do sales research, this is not easy, huh, huh

Q: Are there any problems with the horizontal installation of the pneumatic butterfly valve on the horizontal pipe? Is it serious?: Horizontal pipe, pneumatic butterfly valve, valve level installation problems. Hidden security problems.1, pneumatic butterfly valve stem to vertical installation, horizontal installation, the valve stem sealing effect of internal gravity packing layer, resulting in loose packing, the risk of leakage, and the pneumatic valve of the valve positioner will reduce the accuracy of adjusting clearance, cause. Butterfly valve sealing surface may also be deformed because of the stem deformation and wear.2, the valve installation should be conducive to the safe and safe valve, valve operation is conducive to repair and disassembly.3, the horizontal pipe, the valve stem is best vertical upward, should not be installed down the valve stem. The valve stem is installed downwards, which is inconvenient to operate, inconvenient to maintain, and easy to corrode the valve and cause an accident. Landing valve should not be installed askew, so as not to operate awkwardly.4. Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is used with the valve stem rotation do open and close to the main valve shut-off valve used to do to enable the action of gas, can be designed to have a regulation or a section of the valve and control function, the butterfly valve in the low pressure large diameter pipeline on the use of more and more. Pneumatic butterfly valve classification: stainless steel pneumatic butterfly valve, hard sealing pneumatic butterfly valve, soft sealing pneumatic butterfly valve, carbon steel pneumatic butterfly valve.

Q: and the valve core hole is provided with a guide hole and a valve stem to match. How to ensure the concentricity and convenient disassembly and assembly: 1, the concentricity of the valve stem and valve stem can only be ensured by the guide hole. The function of the thread is only fixed. So the surface and size precision of the 12 guide hole is very important, in the end of 4 the end of wire and drill hole with reamer reaming to ensure accuracy to.2, the coordination of the guide hole can only be used with clearance clearance with higher accuracy.3, good for 4 holes weaken the bearing capacity of shaft, locking with the cone end set screw.4, the thread of the drawing did not draw thread, the suspension line needs to be filled. Do not use M12 for thread. Use M105, the stem should be milled out of a flat, easy wrench wrench stem

Q: Valve handwheel can move, stem does not move what is the matter?: See if the keyway between the stem and handwheel is broken.

Q: What is the cause of valve stem vibration in electric single seat control valves?: 3, liquid medium through the valve, resulting in cavitation caused by shocks, higher frequency, usually accompanied by valve howling. High temperature large pressure difference, the use of single seat valve is relatively easy to happen, this is the control valve (valve body structure) type selection caused by improper,4, the valve core resonant frequency and pipe and fluid frequency consistent with the vibration caused by higher frequency, usually accompanied by pipe vibration. Change the valve at both ends of the process, valve opening may be eliminated.

Q: What is the effect of the gap between the solenoid valve and the valve stem?: it may cause three problems:1, the coil sway easily broken;2 、 the coil is not easy to seal;3, influence electromagnetic frequency and function.

Q: It seems to be used on the stem nut. Yes, thank you. Ah, thank you: Disc spring: not used on valve stem and nut. Usually, disc springs are used on hard sealing ball valves.

During more than 20 years of development, we have been specialized in manufacturing all kinds of machinery parts. professinal in finish processing ,hardware parts producing , textile usage and manned elevator machine parts ,etc.equipped with complete set machining equipment :boring mill ,miller ,punch press ,press ,engine lathe ,CNC center and gauge lathe providing a integrated services.

1. Manufacturer Overview

Location	Jiangsu,China (Mainland)
Year Established	2008
Annual Output Value
Main Markets	North America South America Eastern Europe Southeast Asia Africa Mid East Eastern Asia Northern Europe
Company Certifications	ISO 9001:2000;ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port
Export Percentage	81% - 90%
No.of Employees in Trade Department
Language Spoken:
b) Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines
Contract Manufacturing	OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range