- Gate valve
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- DIN f4 di flange resilient epdm gate valveDN450-1200 Resilient Seated Gate ValveDIN F5 Non-rising stem Resilient gate valveDIN F5 Socket connection soft seal gate valveUnderground cap soft seal gate valveBS5163 Rising stem Resilient soft seal gate valveBrass Threaded Gate ValveHard seal gate valveAPI Slab Gate ValveStainless Steel Gate ValveStainless Steel Knife Gate ValvePneumatic gate valve Control valveSoft Seal Gate ValveExtension stem gate valveNon rising stem Groove Soft Sealing Gate ValveRising stem Forged steel gate valveAPI carbon steel gate valveThreaded Gate ValveDin rising Stem And Non-Rising Stem Gate ValveUL-FM Rising stem flanged fire fighting system gate valveANSI Cast Iron Gate ValveBritish Standard Soft-Sealing Gate Valve
- Butterfly valve
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- DN2000 Double Eccentric Butterfly ValveFlange butterfly valveLug butterfly valveWafer Butterfly Valve With HandleWorm Gear Operated Wafer Butterfly ValveWafer lined fluorine butterfly valvestainless steel wafer butterfly valveStainless Steel Flanged Butterfly ValveEccentric soft sealing flange butterfly valveElectric three-eccentric metal hard seal butterfly valvePneumatic Flanged Butterfly ValvePneumatic Wafer Butterfly ValveThree eccentric metal seals wafer butterfly valveULC butterfly valve reportInflatable Butterfly ValveHigh Performance Butterfly ValveGrooved butterfly valvesElectric soft sealing wafer butterfly valveDouble flange fluorine lined butterfly valveHandle Aluminum Butterfly ValveWorm Gear Aluminum Butterfly ValveFull PTFE lined wafer butterfly valveOne stem no-pin wafer butterfly valveMulti standard Aluminum handle wafer butterfly valveMulti standard soft seat aluminum lever coated discwafer type butterfly valveResilient Seated Butterfly ValveMulti standard soft seat wafer type butterfly valveWafer PTFE seat butterfly valveWorm Gear Operated Lug Butterfly ValveStainless Steel wafer Butterfly ValvePneumatic Wafer Butterfly ValveWafer Type Metal Seat Butterfly ValveLug type manual wafer butterfly valve without pinAluminium Handle Lug Butterfly ValveWorm Gear Operated Flange Butterfly ValveLever Operated Flange Butterfly ValveButterfly valve stemButterfly valve discButterfly valve seat
- Ball valve
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- High platform flange ball valveCast Iron Ball ValveSS Thread Ball ValvesThree Piece Type Ball ValveAPI Ball ValveStainless Steel 3PC Ball ValvePTFE Seat Flanged Ball ValveForge Steel Fully Welded Ball ValveMetal Seat Ball Valvesfixed ball valveFlange connection ball valve3PC Type Ball Valve With Internal Thread Q11F/H-1000WOGThree Way Ball ValveANSI API Cast Steel And Stainless Steel Flange Ball valveTwo-PCS Type Thread Ball Valve
- Globe Valve
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- API Carbon Steel Globe ValveBellows Globe ValveStainless steel flange globe valveStainless steel thread S type globe valveStainless steel thread B type globe valveCast Steel Globe ValvePiston Globe ValveWCB Carbon Steel Globe Check Valveelectric motorized control stainless steel SS316 globe valveBrass Globe ValveCryogenic Globe valveHT200 Globe ValveThreaded Stainless Steel Globe ValveGG25 Globe ValveANSI API Cast Steel And Stainless Steel Globe valve
- Check valve
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- DN800 Slow Closing Check ValveDN800 Rubber Disc Check ValveButterfly Buffering Check Valvecheck valve with counter weightSilent Check ValveStainless Steel flange Check ValveSwing Check ValveSingle Chip Check Valve H74WStainless Steel Wafer Check ValveSwing Start Check ValveFoot check valveAPI Swing Check ValveWCB Swing Check ValveCheck ValveLifting Check ValveBottom ValveHammer Diminish Noises Check ValveWafer Check ValveDuctile Iron Check Valve
- Water Meter
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- Vertical Type Water MetersStainless steel threaded water meterPiston water meterPlastic water meterMore flow rotor dry water meterspiral vane flange water meterCI wotlman water meter with pulse outputLXCLG(R) Vertical removable element woltman cold (hot) water meterSingle flow rotor dry water meterPrepaid Token Water MeterElectromagnetic flowmeterRotary Piston Liquid Sealed Water MeterRotary Piston Liquid Sealed Water Meter
- Air valve
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- Double ball exhaust valveDoubleair Air Valve SaudiDoubleair Air Valve Southeast AsiaDoubleair Air Valve South AmericaDouble Air ValveThreaded Air ValveSingle Air ValveTriple Functions Air ValveAutomatic Air Release ValveAutomatic release valveAutomatic exhaust valveComposite Exhaust Air ValveBrass exhaust valveDouble Ball Air Valve
- Pipe Repair & Coupling
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- Flexible Multi-Function Pipe Coupling ZFJ-SSS Semi-Circle Pipe Repair Clamp SJW-HDuctile Iron Band Repair ClampStainless Steel Band Repair ClampDouble-Section Pipe Repair CouplingFolding Type Pipe RepairSingle-Section Multi-Function Pipe Coupling MF-SGear-Ring Type Multi-Function Pipe Coupling GR-SZBW Damping Corrugated Hose
- Dismantling Joint
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- VSSJAFC(CC2F) Detachable Flange Transmission JointVSSJA-2(B2F) Double Flange Limited Expansion JointVSSJA-1(BF) Single Flange Limited Expansion JointVSSJA(AF) Flange Loose Expansion JointJGD-B Threaded Rubber JointZBW Damping Corrugated HoseKXT-S Flexible Dual-Spherical Rubber JointKXT Rubber Soft JointFlange Adaptor
Filter overview and selection principles
What is a filter?
Filters are small devices that remove small amounts of solid particles from liquids and protect compressors, pumps, meters and other equipment from working properly .
After the fluid enters the filter cartridge with a certain size filter screen, its impurities are blocked, and the clean filtrate is discharged from the filter outlet. When cleaning is required, as long as the detachable filter cylinder is removed and reloaded after treatment. Therefore, it is extremely convenient to use and maintain. Garbage and debris in the pipeline often cause damage to the equipment, such as scale, rust, compound sealants, welding slag and other solid particles, etc. may enter the pipeline system, in order to prevent the fluid containing dust and particles from adversely affecting the equipment , often using filters in pipelines. To protect the pump from construction debris left in the pipeline, a filter device can be installed upstream of the pump. Filters can filter out solid particles in liquids or gases, protecting equipment from damage and preventing pipeline blockages.
There is a filter screen on the flow surface of the filter. When the liquid passes through, most of the impurities will be blocked by the filter screen.
Scope of the filter
①The filters listed in the standard are suitable for liquid and gas materials in the production of chemical, petrochemical, light industry, etc., to filter their solid impurities, and are usually installed on the pipelines in front of the population of pumps, compressors or flow meters to protect such equipment or instruments.
②The standard includes two series of metric system and inch system: the metric series is divided into three pressure grades: PN10, PN25, and PN40; the inch series is divided into two pressure grades, Class150 (PN20) and Class300 (PN50). The pointed and flat-topped cone filters in the metric series are available in pressure ratings starting from PN6, i.e. PN6, PN10, PN25.
③The main structural materials of the standard filter are cast iron, carbon steel, low alloy steel and austenitic stainless steel. The working temperature range: cast iron is - 20 ~ 300 ° C, carbon steel - 20 ~ 400 ° C, low alloy steel Steel - 40~400°C, Stainless Steel - 196~400°C.
④ The standard filter uses a 30 mesh/in stainless steel wire mesh as the standard mesh, which can intercept solid particles with a particle size of not less than 614 μm.
Selection principle
The selection of filters can be selected according to the needs of the technological process and pipeline installation, combined with the comprehensive performance of various types of filters. The selection principles and points of attention are as follows.
①In order to ensure the tightness of the pipe network system, the filter with socket welding and butt welding connection can be selected ; if the convenience of replacement is considered, the filter with threaded connection or flange connection can be selected.
②The body material of the filter should be the same as or equivalent to the connected pipe material.
③ For the working medium with a large amount of solid impurities, a filter with a larger filter area is selected.
④ Generally, the filter whose effective filtering area is more than 3 times of the cross-sectional area of the connected pipeline can be used as a permanent filter; the effective filtering area of the temporary filter is more than twice the cross-sectional area of the pipeline. However, when the solid impurity content in the conveying fluid is not much or there are other measures to make up for it, the requirements can also be appropriately reduced.
⑤ The selection of the mesh number of the filter should be considered to meet the needs of the process, or to protect the mechanical energy of fluid conveying such as pumps and compressors.