Qilong Valve Co. Ltd

wenzhou, China

We are offering fully welded ball valve.Main features:the fully-welded ball valve adopts forged material, welded body, instead of bolts and nuts, to aviod any potential leakage from body.The forged body with regular structure and even thickness can avoid shrinkage cavities, pin holes, cracks, sand holes and other defects occurring to casting body valves.Fully-welded ball valves can be spherical and cylindrical type. Usually the spherical type has only one welding seam on the body, the cylindrical type has two welding seam on the body.Design featuresthe ball valve are designed in accordance with iso14313api 6d;simple structure with good tightness and small torque;with a fully-welded valve body, full bore and the minimum flow resistance (zero actually);emergency sealant injection;cavity pressure self relief;low emission packing;fire safe, anti-static and anti-blowout stem design;valve seat function dbb, dib-1, dib-2;optional extended bonnet;optional overlay stainless steel on body to seat surface andor gasket container surface; be able to be used for underground installation without corrosion of interior parts, therefore, it is the best application for petroleum and natural gas line systems;service life up to 30 years.Product rangebody material: low-temperature carbon steel, carbon steelnominal diameter:2"60"dn50dn1500pressure range:class1502500pn10pn420end connection: rf, rtj, bwworking temperature:-46+200operation:wrench, worm gear, electric , pneumatic , gas over oil actuator and electro-hydraulic actuator.

We are offering ball for ball valve. Size: nps 1-24 (dn25-600) pressure rating: class 150300(pn16100) base material: astm a105, a350 lf2, a182 f304, a182 f316, a182 f6a, a182 f51, a182 f53, a182 f55, a564 630(17-4ph), monel, inconel. Coatings: enp, chrome plating, tungsten carbide, chrome carbide, stellite, inconel, special. Support type: stem drive: spine hole roundness: 0.01-0.02 roughness: ra0.2-ra0.4 coaxiality: 0.05 packaging detail: wooden cases; pallet; containers.

We are offering cryogenic ball valve is suitable for service of working temperature down to 196, such as lng, lpg, and air separation industry. The cryogenic trunnion ball valves are produced by the most advanced technology. It is designed with lip seal which can keep valves with excellent sealing performance in ultra-low temperature. Wuzhou cryogenic test laboratory can test valves up to nps32.Design featuresdesign standard as per: bs6364gbt 24925bonnet extendedlow fugitive emission controllip sealcavity pressure self reliefadopt import seat material of stable low temperature performancethe seat and pressure relief structure can be adapt varies working conditiontop entry structure is convenience to on-line maintenanceproduct rangebody material: stainless steel, cryogenic alloy steel, dual-stainless steelfloating and trunnion mounted ball valve(side and top entry)nominal diameter:12"32"pressure range:class1501500end connection: rf, rtj, bwworking temperature:-196+200operation : wrench, worm gear, electric, pneumatic actuator, gas over oil actuator, electro-hydraulic actuator , etc.

We are offering floating ball valve. Categories: floating ball valve applicaion: floating ball valves are suitable for using on various kinds of pipelines of class 150 to class 1500, pn16 to pnloo, and jis lok to jis 20k to turn on or off the pipeline medium, of which the operation types include manual, worm gear and pneumatic or electric actuators.

We are offering trunnion mounted ball valve categories: trunnion mounted ball valvetrunnion mounted ball valves are suitable for using on various kinds of pipelines of class 150 class 2500, pn16pn160 , jis10kjis20k to cut off or turn on the pipeline medium, of which the operation types include worm gear, manual, pneumatic or electric actuators, being in general of flanqe connection, and butt weldinq end connection as well.

We are offering reduced bore trunnion mounted ball valve.Product name: reduced bore trunnion mounted ball valve categories: trunnion mounted ball valve applicaion: except for full bore ball valves , qilong company manufactures also the ball valve with reduced bore to meet different requirement of customers, which not only lowers the cost and pricing, but also satisfies the special requirement of customers .

We are offering metal to metal ball valve.Main features:seat of metal to metal ball valves have special protection and tight shut-off design to be applied to some poor conditions, such as high- temperate, high pressure and abrasive mediums, to fully solve the problem of inner leakage and outer leakage, and ensure reliable sealing with zero leakage.Design featuresadvanced rocket-spraying process ensures that sealing is realiable under all temperatures pressures. With hydrogen used as fuel, this process has been applied to the sealing faces of the ball and the valve seats;double block and bleed;cavity pressure self relief;blowout-proof stem;seats are tungsten carbide hvof(high velocity oxy fuel) or overlay cladding coated with metal to metal contact between seats and ball, with metal to metal seat sealing characteristics, and it can clean dirt at surface of the gates.Hardness of coating surface: up to hrc68 72;bonding strength of coating: 10000psi;thickness of coating: 0.3 - 0.5 mm;the precise one-to-one grinding process ensures the precise one-to-one grinding between the ball and the valve seat;product rangebody material: carbon steel, stainless steel, alloy steel, dual-phase steelnominal diameter:2"32"pressure range:class1502500end connection: rf, rtj, bwworking temperature:-29+560operation : wrench, worm gear, electric, pneumatic actuator, gas over oil actuator, electro-hydraulic actuator , etc.

We are offering side entry trunnion mounted ball valve.Main features:the side entry trunnion mounted ball valve has been designed two piece body type or three piece body type and with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the balls surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable.The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.Design featuresthe ball valve are designed in accordance with iso14313api 6dbs 5351gbt 19672;simple structure with good sealing performance and small torque;full bore and reduced bore design with the minimum flow resistance (zero actually);emergency sealant injection;cavity pressure self relief;independent ball and stem;low emission packing;fire safe, anti-static and anti-blowout stem design;valve seat function dbb, dib-1, dib-2;optional extended bonnet.Product rangebody material: carbon steel, stainless steel, alloy steelnominal diameter:2"60"dn50dn1500end connection: rf, rtj, bwpressure range: class1502500pn16pn420working temperature:-46+200operation: wrench, worm gear, electric, pneumatic, gas over oil actuator and electro-hydraulic actuator.

We are offering metal to metal floating ball valve.Product name: metal to metal sealed floating ball valve 1-body; 2-packing; 3-gland; 4-gland flange; 5-bolt; 6-circlip; 7-stop collar; 8-lever; 9-circlip; 10-thrust washer; 11-stem; 2-seat seal washer; 13-seat; 14-ball; 15-pressing ring; 16-spring; 17-gasket; 18-bonnet; 19-packing; 20-nucategories: floating ball valve

We are offering metal to metal sealed trunnion mounted ball valve categories: trunnion mounted ball valveqilong valve co., ltd is a leading china metal to metal trunnion mounted ball valve, inconel ball valve, nickel alloy ball valve, low pressure ball valve, medium pressure ball valve manufacturer and supplier. As a professional metal to metal trunnion mounted ball valve company, we have our own metal to metal trunnion mounted ball valve factory, which can provide you with quality products.

We are offering one piece body ball valve categories: ball valve applicaion: one piece body ball valve is suitable for using on various kinds of pipelines of class150 to class300, pn16 to pn40, jl slok to jis20k to turn off or on the pipeline medium, of which operation manners are of manual, worm gear, pneumatic or electric actuators, being of flange.

We are offering reduced bore floating ball valve.In addition to the full bore floating ball valve, qilong company is also manufacturing the floating ball valve with reduced bore to satisfy different requirement of customers, which can not only lower the cost and the pricing, but also meet customers special requirement.