About Us

MINEVIK Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants and beneficiation plants.

large-scale crushing & screening plants and beneficiation plants.

All of our equipment have got ISO international quality system certification, European Union CE certification and Russian GOST certification.

  • In central China-Zhengzhou, covering 140 thousand square meters
  • Win-win cooperation and create more value to customers
  • Exported large quantities and high-end mobile crushing plant and milling equipments to Russia, Kazakhstan, Indonesia, Ecuador, South Africa, Nigeria, Turkey more than 100 countries .

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Our Products

AS a leading global manufacturer of crushing and milling equipment, we offer including quarry, aggregate, grinding production and complete stone crushing plant. We also supply individual crushers and mills as well as spare parts of them.


Our goal is to guarantee the excellent operation equipment with high safety for our customers and minimize the downtime of the machine by predictive maintenance. Kefid service and original accessories can be 100% trusted at the time of maintenance.


Minevik service and original accessories can be 100% trusted at the time of maintenance.


striving to enable customers to get the parts in the nearest place.


Our sales market is spread all over more than 100 countries and regions

relief valve lapping

Pressure Relief Valve Lapping Kit Kemet

Kemet have produced a lapping kit that can be used on Tyco, Crosby, and Anderson Greenwood pressure relief valves. Incorrect lapping and or the use of improper equipment is

Hand Lapping & Portable Lapping Kits Kemet

Pressure Relief Valve Lapping Kit. Carbon Seal Lapping Kit. Hand lapping uses the same principles as machine lapping with respect to abrasive grade / plate selection / plate flatness, but with the following exceptions. Lapping plate is kept stationary; Components are moved by hand in a figure of 8 action; Diamond compounds or liquid diamond can be used ; Technical Datasheets are available on

Lapping Pressure Relief Valve Bodies & Caps Kemet

Lapping Pressure Relief Valve Bodies and Caps. The typical Pressure Relief Valve consists of a body and cap. The flat lapping of each part requires a similar lapping process, but a different technique. In both cases a Kemet Iron Lapping Plate is used with a Type K 3 Micron Liquid Diamond and Type K Lubricating Fluid. The two techniques are as

How To: Lapping Safety Valves Kemet

Kemet Diamond Lapping machines are ideally suited for lapping and repairing safety valves. The safety valve seat can be easily and reproducible be lapped in under 5 minutes using our diamond technology. Flat parts are produced meaning that there will be no seal leakage.The process can be applied to almost any material including bronze

Valve Lapping and Grinding Equipment Dupill Group

Valve Lapping and Grinding Equipment. The LarsLap valve lapping system comprises a number of basic models that cover virtually every type of valve, from 1/4" to 52" (8mm 1300 mm) in diameter. The patented LarsLap technology uses a mechanically driven system whereby the rotating drive head incorporates individually driven grinding wheels to


to the “art” of lapping and polishing can be helpful for personnel qualified and properly trained to repair pressure relief valves. LAPPING VALVE DISCS 1. Ensure that the work area is clean. Have several lint-free wipes open-end and ready for use. 2. Ensure that you

Hand Lapping Plates Kemet International

Pressure Relief Valve Lapping Kit. Kemet have produced a lapping kit that can be used on Tyco, Crosby, and Anderson Greenwood pressure relief valves. Incorrect lapping and or the use of improper equipment is a major contributor to seat leakage, which in turn leads to

Valve Grinding & Lapping Machines Climax Portable

valve grinding & lapping machines Lightweight for easy handling and installation, our valve grinding and lapping machines span working ranges for gate valves from 1.3 to 39.4 inches (32 to 1000 mm). During operation, you can quickly change grinding disks and adjust the grind pressure.

A Simple DIY Guide to Valve Lapping MNR Reconditioning

29/11/2016· Valve lapping is not as hard as it seems Lapping valves doesn’t replace a valve job; however, it shows if the mating surfaces are perfect for each other. Some time ago, this is something we learned in auto shop. Without a doubt, its old school, yet you have to know how to lapping valves in []

Ventil Valve Testing and Repair Equipment

Ventil Smart Robotics – CNC Testing. When valve testing is becoming a repetitive task, you are tempted with the lack of skilled people and your customers demand more for less (and more quickly), Ventil Smart Robotics – CNC testing is the solution for you.

Unigrind GmbH & Co. KG Valve machining and testing

uni grind VENTA. Portable grinding and lapping machines for working on valves with flat sealing surfaces: Globe valves; Safety relief valves; Check valves; Working range: DN 8 – 1600 mm (¼“ 64") uni grind ’s ideal solution for working on sealing surfaces in shut-off valves, check valves, control valves and safety relief valves both on-site and in-shop. . Robust, low maintenance

High Pressure Safety Valves Maintenance Manual (Rev. D)

• When popping a safety valve for the first time, or after refurbishment, always be prepared to actuate the valve with the lever while standing in a safe place away from the valve. This may be done by fixing a rope to the lever for actuating the valve from a distance. • Striking a valve which is under pressure can cause premature actuation.

Consolidated Steam Safety Valve Repair with the EFCO

20/05/2014· This video shows the nozzle repair of a safety valve with two of our EFCO machines: The TD-03 and the TSV-150 The TD-03 is a portable lathe with axial and radial feed for single point boring and

Valve seats and disks lapped and polished Valley Design

Valley's precision lapping and polishing process enables greatly improved performance for safety relief valves and pressure relief valves used worldwide for applications which utilize high pressure steam and vapor. This new process allows recessed valve seals and seats to be polished flatter than ever before, increasing the maximum allowable

‫صيانة صمام الأمان2/3 safety valve|inspection|lapping

24/01/2017· safety valve inspection lapping process ,safety valve maintenance ,safety valve lever,spring loaded safety valve,safety valve overhaul, safety relief valve,s...

Safety Relief Valve Overhaul & Repair – Flowstar (UK)

Flowstar is the largest UK stockist of Safety, Relief and Reducing Valves. We provide a comprehensive service for the test, overhaul and repair of Safety Relief valves. Our service is Professional, fast and efficient and is carried out by competent manufacturer trained staff.

Hand Lapping Techniques Kemet

Note: For lapping components such as Safety Relief Valves, the Kemet Plate can be removed from its case and used by working in a random action on top of the workpiece. Operating Instructions & Lapping Techniques for the 'Kemet Carbon Dry Lapping Kit'

VALVe mAchInInG And TesTInG TechnoLoGY Unigrind

portable grinding and lapping machine for working on sealing surfaces of safety (relief) valves and disks: For grinding/lapping big valves and butt-welded valves the machine is mounted with 3-jaw chuck on the valve-housing. Small valves and globes are done on the machine stand with centring device and pneumatic lifting device for the machine.

Typical Improper Repairs of Safety Valves

This paragraph defines a repair of a safety and safety relief valve as the replacement, remachining or cleaning of any critical part, lapping of seat and disk or any other operation which may affect the flow passage, capacity, function or pressure retaining integrity. Even the disassembly, reassembly and/or adjustments which affect a valve's

Valve repairs, valve supply & support Provalve Ltd

Based in the centre of the M62 Corridor WSG Provalve operate throughout the UK and are ideally placed to provide a fast response for valve repair from Humberside, the Wirral and beyond. WSG Provalve Ltd has vast experience in the field of repair, with regard to all types of Globe Control, Safety & Relief and Isolation Valve Products. WSG

Manuals: Series 800 and 900 OMNI-TRIM® pressure relief

Crosby SerieS 800 and 900 OMni-TriM® preSSure relief valveS InstallatIon and maIntenance InstructIons 8 lappinG oF seats Metal seated ValVes only Many different methods exist for lapping valve seats but certain essential steps are required for satisfactory results. extreme care should be taken throughout to make certain that the seats

Safety Relief Valve Lapping Reseater dexter-is

Safety Relief Valve Lapping Reseater Make better use of your labor by eliminating hand lapping Safety Relief Valves. The Dexter ALP 9312 Lapping Reseater is a revolutionary way to Lap SRV Nozzles and Discs both In-Line and in the Shop.

Portable Lapping Kits Kemet Australia

Pressure Relief Valve Lapping Kit. Kemet have produced a lapping kit that can be used on Tyco, Crosby, and Anderson Greenwood pressure relief valves. Incorrect lapping and or the use of improper equipment is a major contributor to seat leakage, which in turn leads to

Safety Valve Lapping..hindi

25/12/2016· Learn how to lap safety vale manualy

PSV TESTING Products Ventil

The Ventil high volume ‘FL’ models are meeting ASME NBIC, API RP 576 recommendations. Ventil Test valve benches for PSV testing are available for both air / gas and liquid testing. Reliable Set Pressure levels in liquid service are achieved using air-over-liquid design. Relief Valve Test Software (CRS)

How To Lap Valves

How To Lap Valves. Lapping valves doesn't take the place of a valve job, but it does show if the mating surfaces are compatible. Back in the day, this is one of the things that was taught in high school auto shop. Sure, it's old school, but you need to know how to lap valves

Relief Valve Parker Hannifin

temperatures upon relief. Relief valves are designed to open proportionally to increasing pressure. Therefore, they are not recommended for applications requiring immediate full valve flow at set pressure (such as decompositions, polymerizations, etc.). Full flow of relief valve is defined at 10% over set pressure. Relief Valve Relief Valve www

Safety Valves & Pressure Relief for Boilers | VYC Industrial

The relief valve works as an automatic pressure releasing regulator activated by the static pressure existing at the entrance to the valve and is characterized by its ability to open instantly and totally. Design in accordance with “International Standard ISO 4126-1 Safety Valves”. Fabrication program Catalogues by product Complementary technical instructions > Mod. 696 EN. The valve works

Valve Lapping | Products & Suppliers | Engineering360

Description: conditioning ring. The Model 24 diamond flat lapping/polishing machine is a popular choice for lapping of mechanical seal faces and a variety of valve components, eg : pressure relief valve bodies and caps, and parallel slide valves, both in original manufacture

Weir Power & Industrial

Weir Power & IndustrialFirst choice for power and industrial protection 5 Hopkinsons FULL BORE & VENTURI PARALLEL SLIDE GATE VALVES PI-0309 Volume production of gate valves for low/ medium general purpose industrial duties. Full bore parallel slide gate valves in low carbon steel for a nuclear power plant. The Hopkinsons Full Bore & Venturi


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