Ball Valve--Fully Welded Ball Valve

Trunnion mounted designs for forged steel trunnion mounted ball valve is available for over 2" size and are generally used for higher pressure. Three pieces body, blow-out proof stem, antistatic device, fire-safe designed and certified, double block and bleed, self relieving. Execution could be full bore or reduced bore, and materials can be carbon steel, stainless steel, special alloys resilient or metal seated These have the ball mounted on trunnions supported in body bearings above and below the ball. sealing is achieved by spring loaded piston type seats which shut off flow when line pressure acts on the upstream seat. This design provides automatic rilief of cavity overpressure. Features: 1: Three Pieces Forged Steel Body; 2: Trunnion Mounted Ball type; 3: Full & Reduced Bore types; 4: Anti-Static device design; 5: Blow-out proof stem design; 6: Double Block and Bleed, DBB design; 7: Fire Safe Design 8: With vent valve & drain valve; 9: Lifting lugs & supporting feet for 8" & Larger sizes. Plywood case.

1500LB high pressure top entry ball valve has a top entry structure which has advantages as below of small fluid resistance, simple structure, small volume, light weight, convenience for operation and maintenance, open and close quickly as well as start and close flexibly & reliable sealing. This type valve has the below features: 1: Top entry structure Its most difference from common ball valve is that its maintenance can be made on pipe line and without dismounting from the pipe line.The back space seat structure is adopted for the seat and the rear portion of seat retainer is oblique angle to prevent accumulation of impurity from affecting back space of seat. 2:One piece body One piece body is to guarantee sufficient strength and rigidity under maximum rated operating pressure. The internal parts of valve are carefully designed and selected to ensure reliability under all kinds of operating condition. Enough margin wall thckness and adaptation of high strength connective bolts are convenient for valve maitenance and sufficiency to support the stress from piping. 3: Emergency sealing Compound injection holes are designed and compound injection valves are installed at locations of stem cap and body support of side valve.When sealing of stem or seat is damaged to induce leakage, the compound can be used to do the second time sealing. A concealed check valve is installed in side of each compound injection valve to prevent compound from out flowing due to the action of transmitter substance.The top of the compound injection valve is the connector for fast connection with compound injection gun. 4: Low operation torque Top entry ball valve has a trunnion mounted ball, whose surface is ground, polished and hard face treated.The ball and stem is integrated, sliding bearing is installed on the external bore so that the friction radius is small and operation torque is very low. 5: Double block & bleed(DBB) design When ball is full open or close position,the transmitter substance in center cavity of body can be released by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be released to low pressure end by self relief seat. 6: Reliable sealing design The seat sealing is formed by seat sealing and metal retainer component.The seat retainer floats axially and low pressure sealing of valve seat is reached by pre-pressure of spring.In addition, the piston effect of valve seat is designed reasonably,which realized high pressure sealing by the pressure of operating medium and realize the interception of retainer to form the sealing of the body.The expansion graphite ring is designed to realize sealing under fire condition. 7: Extension stem design For the underground installed top entry ball valve, the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve. 8: Anti-static and fire safe design The fire prevention design of valve meets the requirement in API6FA/API607 standard and the design of the anti-static conforms to regulations in API6D and BS5351. Plywood case.

Fully welded ball valve FREE-Valves Fully Welded Ball Valve are widely used in almost all the industry .Compared to the general casting ball valve, fully welded ball valve have a highly performance and longer life time . It was widely used in city gas ,city heat supply ,oil chemical industry, ship building ,steel ,power plant etc . Fully welded ball valve can be reliable run in the long time ,easy to be installed and less maintenance work . Benefits 1.Valve body material is the same as the pipe material , so they will not occur transformation due to unbalanced stress . 2.Face to face dimensions can be made according to customer requirement. 3.Material of valve seat is made up of PTFE+20%C se align ring and metal sealing ,which can adapt to the change of pressure and temperature, So the leakage will not occur during the pressure and temperature range. 4.The ball body has a highly machining precision due to the tracking of computer detector, so the ball valve was shut off/shut on c onveniently. Valve Specification Type : FRQ61FC,FRQ361FC Size Range:NPS2~NPS48 , DN50 ~DN1200 Pressure Range :Class150~Class600,1.6MPa~4.0MPa Material of valve body: A105,F304,F316 Connect Method :welding Design standard:ASME B16.34,API6D Test and Inspect:API598 Face to Face:ASME B16.10 Medium :Water ,oil ,gas ,acid ,alkaili etc Driving method : electric ,handle, worm gear etc . Application industry: centralized heating, coal gas pipe, waste gas treatment system, heat supply system

Fully welded ball valve Free-valve's fully welded ball valve are widely used in almost all the industry .Compared to the general casting ball valve, fully welded ball valve have a highly performance and longer life time . It was widely used in city gas , city heat supply , oil chemical industry, ship building , steel , power plant etc . Fully welded ball valve can be reliable run in the long time , easy to be installed and less maintenance work . Benefits 1.Valve body material is the same as the pipe material , so they will not occur transformation due to unbalanced stress . 2.Face to face dimensions can be made according to customer requirement. 3.Material of valve seat is made up of ptfe+20%c sealing ring and metal sealing , which can adapt to the change of pressure and temperature, so the leakage will not occur during the pressure and temperature range. 4.The ball body has a highly machining precision due to the tracking of computer detector, so the ball valve was shut off/shut on conveniently. Valve specification Type : frq61fc, frq361fc Size range:nps2~nps48 , dn50 ~dn1200 Pressure range :class150~class600, 1.6mpa~4.0mpa Material of valve body: a105, f304, f316 Connect method :welding Design standard:asme b16.34, api6d Test and inspect:api598 Face to face:asme b16.10 Medium :water , oil , gas , acid , alkaili etc Driving method : electric , handle, worm gear etc . Application industry: Centralized heating , coal gas pipe, waste gas treatment system, heat supply system.

Supplier: Trunnion mounted ball valve, fully welded ball valve, forged steel ball valves
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