Zhengzhou Marine Valves Suppliers and Manufacturers

For proven quality of our sand resin casting parts , we have our own casting workshop which is outfitted with a resin sand casting line.With annual production capacity of 5000 ton.The casting line is mainly made up of one set of 1 ton intermediate frequency furnace, two set of 2 ton medium frequency furnace, one set of 4 ton holding furnace.It is dedicated to produce custom sand castings with maximum dimension of 2200*2200*1500 and maximum net weight of 4000kg. Additionally , we have a spectrographic lab and a mechanical lab.The labs are equipped with a series of testing equipment to ensure integrity of cast parts.Included are the spectrum analyzer, tension tester, magnetic defector detector, ultrasound flaw detector , hardness tester, and the foundry sand testing equipment.

Spherical disc butterfly valve is developed combined with the advantage of the butterfly valve and segment ball valve . The special disc butterfly valve can be used at inlet and outlet of the water pump,piping network system,recovery system,high water tank,sewage system and any other back flow preventing position to shut off or control the pipeline. Features 1.Designed with bidirectional sealing structure,the installation of the spherical disc butterfly valve will not be restricted by the direction of the fluid. 2.Since the metal sealed spherical disc butterfly valve is offered with self-sealing device,reliable sealing performance can be realized under the pressure from medium. 3.When the valve is installed on the reversed direction of the fluid ,powerful specific pressure of sealing can be obtained as valve seat and fluid formed annual contacting area. 4.The valve has long service life due to wear compensation. 5.The unique rotational structure ,as well as the sphere-conical sealing surface of the valve seat,makes for the self-cleaning function.The solid particles will be crushed when the bidirectional sphercial disc butterfly valve is opened or closed. Technical Specifications Size 2?~40? DN50~DN3000 PressureClass 150~Class 3 00 PN1.0~PN4.0 Body material WCB, CF8, CF8M, CF3, CF3M,etc. Sealing materialHard alloy Connection typeFlange or weld Operating typeWorm gear ,electric or pneumatic Applications Municipal engineering Circulating water system Water treatment system Fire extinguisher system Main Dimensions Flange Type: -

Featuring abrasion resistance,high pressure resistance,erosion resistance and anti-scaling performance,the slurry valve is specially offered for controlling or shutting off the slurry.The slurry valves are widely used at alumina,steel ,metallurgy and mining industry. Features 1.The valve body of y type globe valve for alumina slurry control is consisted of two pieces. The left and right valve bodies are provided in geometric design. Besides the solidworks software for three -dimensional design ,the ANSYS software is also applied for flow field analysis. 2.The valve seat of y type slurry valve is separated from the valve body.The valve seat is installed between the two valve body ,so the valve seat can be replaced easily . 3.To ensure the valve stem has straight line motions ,there is an anti-rotation device provided for the valve stem of the y type slurry valve . 4.Low pressure drop . 5.The range of product is anti-scaling,which are widely use in alumina process. Technical Specifications Size214? DN50~DN350 Pressure Class 150~Class 600 PN1.0~PN16 Body materialWCB, CF8, CF8M, CF3, CF3M etc Connection type :Flange ,weld Driving method:Manual ,Electric,Pneumatic Applications Alumina industry Polymer Industry Chemical industry Steel industry Nonferrous meta l industry

Featuring abrasion resistance,high pressure resistance,erosion resistance and anti-scaling performance,the slurry valve is specially offered for controlling or shutting off the slurry.The slurry valves are widely used at alumina,steel ,metallurgy and mining industry. Features 1.The valve body of y type globe valve for alumina slurry control is consisted of two pieces. The left and right valve bodies are provided in geometric design. Besides the solidworks software for three -dimensional design ,the ANSYS software is also applied for flow field analysis. 2.The valve seat of y type slurry valve is separated from the valve body.The valve seat is installed between the two valve body ,so the valve seat can be replaced easily . 3.To ensure the valve stem has straight line motions ,there is an anti-rotation device provided for the valve stem of the y type slurry valve . 4.Low pressure drop . 5.The range of product is anti-scaling,which are widely use in alumina process. Technical Specifications Size�?214�?? DN50~DN350 Pressure �?Class 150~Class 600 PN1.0~PN16 Body material�?WCB, CF8, CF8M, CF3, CF3M etc Connection type :Flange ,weld Driving method:Manual ,Electric,Pneumatic Applications Alumina industry Polymer Industry Chemical industry Steel industry Nonferrous meta l industry

Applicable Medium water, steam, oil, nature gas, acid and alkali medium. Applicable Temperature-196~350 Drive Mannermanual, pneumatic, electric, hydramatic, Nominal DiameterDN15~250mm 1/2~10. Plywood or wooden packing as export standard.

Butterfly valve

Name: Pirate Ship Capacity: 24/40p Height: 9/12m Cover area: 7*12/8*15m Voltage: 380V Power: 20kw

FREE-VALVEâ??s slurry valves are idea for bi-directional tight on-off service in abrasive slurry applications,the valve adopts the full-lined wear-resistant polyurethane injecting with the whole mold, and all media passing areas are wrapped in the polyurethane lined to achieve all-round wear-resistant protection,which provides excellent wear life with 100% positive shutoff of abrasive slurry,the Valves are designed for applications in mining. Features 1.Bi-directional flow,zero Leakage and shut-off, allowing valves to be installed in either direction. 2.The polyurethane lined has integral flange seals, eliminating flange gaskets when installing. 3.Resilient seats can be easily replaced after removing valve from the line. 4.Full round port allows for high flow capacity with minimum pressure drop. 5.Valve plate use wear - resistant stainless steel plate with various types of wear - resistant surface treatment. 6.Wafer type can also be made if necessary Technical Specification 1) Size Range: DN50~DN600 2) Pressure Range: PN6~PN16 3) Connection Type: Wafer,Flange 4) Seat and lined material:Polyurethane (PU) 5) Body material:WCB, CF8 ,CF8M 6) Pressure test:GB/T13927, MSS SP-81 7) Face to Face: GB/T12221, MSS SP-81 8) Operation Method:Handwheel, Lever, Bevel Gear, Chain Wheel, Pneumatic, Electric 10) Service temperature:-20�°C to 80�°C Applications FREE-VALVEâ??s slurry knife gate valve is designed and equipped to handle tough and abrasive shut off applications involving slurries, powders or granular substances as well as pulp stock, paper and recycled paper.Mining and minerals processing,Pulp and paper applications,Water & waste water,Sand and gravel plants,Tailing lines,Abrasive slurry materials

FREE-VALVEs screw foot valve is a kind of energy saving valve, usually installed at the bottom of the suction pipe of pump. The functions of foot valve are designed to stop water from going backwards when the pump shuts off and only allow the water flow forward . As many inlet and stiffeners are designed on the valve bonnet , the valve is not easy to clog . The foot valve is usually applied at suction pipe . The valve disc usually designed as signal disc ,and connection method is flange . Features 1.Screw foot valve is composed of valve body, disc, cover,strainer basket, sealing ring and other parts. 2.The disc is moved up and down under fluid pressure drop between inlet and outlet to realize the valve opening and closing. The valve opens under the pressure of the fluid. 3.When the pump stops working, the valve will be shut off quickly under pressure of outlet pipe , and the liquid will not flow back to the water source, which will help the water suction pump and save water loss. 4.Flow area is 2 to 3 times of the pipe area about stainless steel or carbon steel strainer basket. Technical Specification: 1.Size Range: NPS2~NPS8,DN50~DN200 2.Applicable Temperature: 0~300 3.Connection Type: screw 4.Sealing material: soft sealing or hardness sealing 5.Material of main partsWCB,stainless steel 6.Test standardGB/T13927,API598 Application: FREE-VALVEs screw foot valve is designed for using in irrigation as well as other pumping applications where water may be dirty due to suspended silt and sand. It offers extremely low head loss. Valve body is cast steel construction. Ports are female screw for easy installation.

FREE-VALVE's flange foot valve is a kind of energy saving valve, usually installed at the bottom of the suction pipe of pump. The functions of foot valve are designed to stop water from going backwards when the pump shuts off and only allow the water flow forward . As many inlet and stiffeners are designed on the valve bonnet , the valve is not easy to clog . The foot valve is usually applied at suction pipe . The valve disc usually designed as signal disc ,and connection method is flange . Features 1.Flange foot valve is composed of valve body, disc, cover,strainer basket, sealing ring and other parts. 2.The disc is moved up and down under fluid pressure drop between inlet and outlet to realize the valve opening and closing. The valve opens under the pressure of the fluid. 3.When the pump stops working, the valve will be shut off quickly under pressure of outlet pipe , and the liquid will not flow back to the water source, which will help the water suction pump and save water loss. 4.Flow area is 2 to 3 times of the pipe area about stainless steel or carbon steel strainer basket. Technical Specification: 1.Size Range: NPS2~NPS20,DN50~DN500 2.Applicable Temperature: 0~300 3.Connection Type: Flange or screw 4.Sealing material: soft sealing or hardness sealing 5.Material of main partsWCB,stainless steel 6.Test standardGB/T13927,API598 Application: FREE-VALVE's flange foot valve is designed for using in irrigation as well as other pumping applications where water may be dirty due to suspended silt and sand. It offers extremely low head loss. Valve body is cast steel construction. Ports are female screw or flange for easy installation.

Free-valve's triple offset butterfly valve adopt triple offset principle to design, makes the movement track on facing space reach to idealization, and there are no attrition and no intervene between sealing pair , furthermore, the sealing material has been selected reasonably, thereby it ensure sealing performance, wear resistance, high temperature resistance capability of valve. Features 1. Reliable sealing, convenient operation, opening and closing fast. 2. It adopt triple offset elasticity or multiple layers hard sealing configuration, the hermetical capability can reach to reliable sealing performance. 3. The seal of disc can be replaced by loosening the disc ring bolts, saving the cost of the valve. 4. According to the requirements of medium conditions, overlaying or spray welding different sealing materials on the sealing surface of the valve seat. 5. It has characteristic of super long usage life, frictionless closure, high temperature etc. tions 1) size rangenps2~nps60 dn50dn1500 2) pressure rang eclass 150~class 300 ;pn10pn40 3)body materialcarbon steel, stainless steel & other materials 4) sealing materialstainless steel, hard alloy& other materials 5) connection methodflange, wafer, weld . 6) operating methodworm gear, electric, pneumatic . 7) pressure test:gb/t13927; api598 8) face to face: gb/t12221; api609. Applicable Free-valve's triple offset butterfly valve is applied to use in heating system, chemical, petroleum, natural gas, refining, energy , power plant condensates waterworks, water treatment and the role of regulating valve.

Wear-resistant semi-ball valves are designed for the coal slurry medium in texaco coal chemical industry and ctl industry. As special structure , the scaling of coal particle can be avoid effectively. They are widely used in chilling water pump , high or low pressure grey water pump, coal slurry pump , the lnlet and out let of filter equipment coal slurry conveying pipelines, dry dedusting system, spray coal system and coal ash treatment system etc.

The most advanced water pump control valve Tube force is a newly product of the third generation hydraulic control valve, is a kind of butterfly type multi-function control valve. The valve is adopted with flow design, low energy consumption, reliable performance, and good sealing performance. It has the function of both electric gate valve, electric butterfly valve and control valve, fast closing speed and adjustable pressure relief time, can effectively eliminate water hammer damage, protect the safety of the pump and the pipeline system. The valve is mainly installed on outlet pipeline of the centrifugal pump, mixed flow pump and axial flow pump, the valve is designed with diaphragm type and piston type, can be separately applied to clean water, raw water, sewage and slurry water medium, the valve can feedback the valve operation condition in real time through auxiliary components, achieve automatically control and remote detection for remote distance transportation engineering. There are five types such as common type, back water type and low voltage type to meet different customer's requirement. Because of the valve structure is compact, small size and light weight, the valve is very suitable to large size pipelines. The valve is Widely used in electric power, metallurgy, municipal, environmental protection, food industry supply, draina ge system, sewage pumping stations, chemical delivery system. It is a new type of pumping station with the newest structure, the

The angle isolation valve is the upgraded type of the ordinary control valve developed by our company. The fixed valve seat and the removable valve disc compose the throttle device.Through the adjustment on the location of the valve disc,flow regulation can be realized.This product isspecifily designed for serve service in alumina and mining applications where scale and erosion are present. Benefits 1.The protection and flow guide device is installed on the flange connection needled control valve. 2.There is a connecting plated designed for the needle control valve to protect the valve stem and valve disc from being eroded. 3.3.The detachable vale is seat makes for easy maintenance of the liquid control valve for chemical industry . 4. To withstand the erosion of the medium flowing at high speed,the control valve for power station is provided with overlaid hard alloy seat. Technical specification Size : 2''~16''/D N5 0`DN400 Pressure : Class 150~class900 PN1.6-PN16 Body material: WCB(A105),WC6,WC9,etc. Connection method: Flange Driving method: Electric Applications It is designed and engineered specifically for the mining and process industry, or other applications where built up scale or settled slurries need to be cleared to allow flow. -Alumina : Bauxite slurries,digestion slurries,flash vessel vapour return,green andspent liqor's,washer underflow/overflow,tertiary and secondary thickener's,press filter isolation,mudline disposal -Precipitation -Filtrate underflow -Hydrate slurry storage

Wedge gate valve adpot wedge disc as closing part ,it is widely use in water, steam, oil, gas and other corrosive medium. The gate valve can also be used in the environment with high temperature and high pressure. Features 1.Manufactured with straight-through channel, the energy loss is less than that of the S type channel, the flow direction of the medium is not changed when passing through the gate valve. 2.The wedge structure of the valve plate makes for large loading coefficient of the sealing. Safe and reliable ,so this wedge gate valve can be used under high pressure. 3.The high precision of the valve stem realizes the tight integration with stuffing .So, medium leakage can be avoided. Techinical Specifications Size: 2 ~16 DN50~DN400 Pressure: Class 150~Class 1500 PN1.0~PN32 Body material: WCBï¼?A105), WC6, WC9, LCB, CF8(304), CF8M(316), CF3(304L), CF3M(316L) etc. Sealing material: Stainless steel ,hard alloy,etc Connection type: Flange Driving method: Manual ,Electric,Pneumatic Design and manufacture standard: ASME B16.34 Face to face dimension standard:ASME B16.10 Flange connection standard: ANSI/ASME B16.5 for NPSâ?¦16 Applications Chemical industry Water Works Power station

Spherical disc butterfly valve is developed combined with the advantage of the butterfly valve and segment ball valve . The special disc butterfly valve can be used at inlet and outlet of the water pump,piping network system,recovery system,high water tank,sewage system and any other back flow preventing position to shut off or control the pipeline. Features 1.Designed with bidirectional sealing structure,the installation of the spherical disc butterfly valve will not be restricted by the direction of the fluid. 2.Since the metal sealed spherical disc butterfly valve is offered with self-sealing device,reliable sealing performance can be realized under the pressure from medium. 3.When the valve is installed on the reversed direction of the fluid ,powerful specific pressure of sealing can be obtained as valve seat and fluid formed annual contacting area. 4.The valve has long service life due to wear compensation. 5.The unique rotational structure ,as well as the sphere-conical sealing surface of the valve seat,makes for the self-cleaning function.The solid particles will be crushed when the bidirectional sphercial disc butterfly valve is opened or closed. Technical Specifications Size �?2�??~40�?? DN50~DN3000 Pressure�?Class 150~Class 300 PN1.0~PN4.0 Body material �?WCB, CF8, CF8M, CF3, CF3M,etc. Sealing material�?Hard alloy Connection type�?Flange or weld Operating type�?Worm gear ,electric or pneumatic Applications Municipal engineering Circulating water system Water treatment system Fire extinguisher system Main Dimensions Flange Type: -