All Products
API 602 Check Valve
Place of Origin: China Certification: ISO9001-CE
BTL valves are available in Three bonnet designs. The first design is the Bolted Bonnet, with male–female joint, spiral wound gasket, made in F304L/graphite. Ring joint Gasket is also available on request.
The second design is the welded bonnet, with a threaded and seal welded joint. On request a full penetration strength welded joint is available.
The third design is the pressure seal bonnet, with a threaded and pressure seal bonnet joint. The forged check valve has three different designs, they are piston check valve, ball check valve and swing check valve.
API 6D/BS 1868 Swing
As the channel within the valve is in streamline form, the flow resistance is smaller than lifting check valve
As the channel within the valve is in streamline form, the flow resistance is smaller than lifting check valve, it’s suitable for low flow large-caliber application without frequently change in flow. However, it’s not suitable for pulsating flow for sealing performance poorer than lifting check valve.
Swing check valve is suitable for various operating conditions of pipeline for petroleum, chemical, pharmaceutical, chemical fertilizer and electric power industry.
Swing check valve is suitable for clean medium like water, oil, steam, acid medium, and not suitable for medium with solid particles and great viscosity.
BS 1873
Globe valve uses valve stem pressure to make the sealing face of valve clack and sealing face of valve seat fit tightly to cut off medium.
Globe valve uses valve stem pressure to make the sealing face of valve clack and sealing face of valve seat fit tightly to cut off medium. It’s a forced seal valve.
Flow direction of medium in globe valve includes “low in and high out” and “high in and low out”. The medium is allowed to flow in only one direction. The valve shall be installed in right direction.
Globe valve has structure of straight-through type, direct flow type and right angle type.
When globe valve is open, and the opening height of valve clack is up to 25% ~ 30% of nominal diameter of the globe valve, the flow reaches the maximum which show that the valve reaches the fully open position.
API 602 Globe Valve
Globe valve uses valve stem pressure to make the sealing face of valve clack
Globe valve uses valve stem pressure to make the sealing face of valve clack and sealing face of valve seat fit tightly to cut off medium. It’s a forced seal valve.
Flow direction of medium in globe valve includes “low in and high out” and “high in and low out”. The medium is allowed to flow in only one direction. The valve shall be installed in right direction.
Globe valve has structure of straight-through type, direct flow type and right angle type.
When globe valve is open, and the opening height of valve clack is up to 25% ~ 30% of nominal diameter of the globe valve, the flow reaches the maximum which show that the valve reaches the fully open position.
OffSet Butterfly Valve
Dedicated butterfly valve can be designed according to the special requirements of the user
Valve body and valve seat of tri-eccentric hard sealing butterfly valve are combined component. Build up weld temperature, corrosion resistant alloy material on the valve seat sealing surface layer.
Tri-eccentric: the centerline of shaft offsets centerline of the sealing surface, the shaft centerline is slightly deviated from centerline of the pipeline, and centerline of valve body sealing face (oblique circular cone) and centerline of pipeline form an angle of β.
The multi-layer sealing ring is made of soft and hard laminated sheet metal. It has advantages of both of metal hard seal and soft seal. Sealing performance of zero leakage is guaranteed in low and high temperature.
API 6D Slab
Plate gate valve is a kind of sliding valve that taking parallel flashboard as closing element.
Plate gate valve is a kind of sliding valve that taking parallel flashboard as closing element. The closing part may be single flashboard or double-flashboard with support mechanism in the middle.
Straight plate gate valve may be divided into single flashboard plate gate valve without and single flashboard plate gate valve with diversion hole. The latter is usually for long-distance transportation pipeline, and the former is mainly for entrance and exit within station or pump.
Plate gate valve has compact structure, small flow resistance. It’s easy to operate and suitable for natural gas, petroleum, chemical industry, environmental protection, city pipeline, gas pipeline and other pipelines, blow-down system and gas storage system as on-off equipment. Plate gate valve is also suitable for medium with suspended particles as the flashboard slides on surface of the two valve seat.
API 6D Expanding
Plate gate valve is a kind of sliding valve that taking parallel flashboard
Plate gate valve is a kind of sliding valve that taking parallel flashboard as closing element. The closing part may be single flashboard or double-flashboard with support mechanism in the middle.
Straight plate gate valve may be divided into single flashboard plate gate valve without and single flashboard plate gate valve with diversion hole. The latter is usually for long-distance transportation pipeline, and the former is mainly for entrance and exit within station or pump.
Plate gate valve has compact structure, small flow resistance. It’s easy to operate and suitable for natural gas, petroleum, chemical industry, environmental protection, city pipeline, gas pipeline and other pipelines, blow-down system and gas storage system as on-off equipment. Plate gate valve is also suitable for medium with suspended particles as the flashboard slides on surface of the two valve seat.
API 602
The sealing principle of wedge gate valve is seal through close connection of wedging
The flashboard has two sealing faces. The most commonly used flashboard has a wedge forming by two sealing faces. The wedge angle varies with valve parameters, usually 5°.
The sealing principle of wedge gate valve is seal through close connection of wedging of two sealing faces of wedge flashboard and two sealing faces of valve body.
Valve body and valve cover may be connected by bolts, pressure self-tight or welding.
The flashboard is solid flashboard.
API 600
The flashboard has two sealing faces. The most commonly used flashboard has a wedge forming by two sealing faces.
The flashboard has two sealing faces. The most commonly used flashboard has a wedge forming by two sealing faces. The wedge angle varies with valve parameters, usually 5°.
The sealing principle of wedge gate valve is seal through close connection of wedging of two sealing faces of wedge flashboard and two sealing faces of valve body.
Wedge gate valve may be divided into outside stem gate valve (rising stem gate valve) and inside stem gate valve (revolving stem gate valve) according to different opening and closing modes of flashboard driven by valve stem.
Valve body and valve cover may be connected by bolts or pressure self-tight.
3-PC Body Floating
Floating ball valve is for medium and low pressure conditions for various corrosive and non-corrosive mediums.Body of floating ball valve may be integral or combined type.
Floating ball valve is for medium and low pressure conditions for various corrosive and non-corrosive mediums.Body of floating ball valve may be integral or combined type.Floating ball valve manufactured by BTL may be divided into cast steel floating ball valve and forged steel floating ball valve by different material forming approaches. There are soft sealing floating ball valve and metal sealing ball valve by sealing material.User may select full-size or reducing structure as required. The aperture of rate of full-size valve shall be same with inner diameter of pipeline for pipeline cleaning.
2-PC Body Floating
Floating ball valve is for medium and low pressure conditions for various corrosive and non-corrosive mediums
Floating ball valve is for medium and low pressure conditions for various corrosive and non-corrosive mediums.Body of floating ball valve may be integral or combined type.Floating ball valve manufactured by BTL may be divided into cast steel floating ball valve and forged steel floating ball valve by different material forming approaches. There are soft sealing floating ball valve and metal sealing ball valve by sealing material.User may select full-size or reducing structure as required. The aperture of rate of full-size valve shall be same with inner diameter of pipeline for pipeline cleaning.
3-PC Body Trunnion
API 6D/ASME B16.10. For product beyond the scope of the standard, it shall be manufactured by specifications in BTL standard or user’s requirements
A. It’s generally for general industrial pipeline and long-distance transportation pipeline for various corrosive and non-corrosive mediums.
B. Standing ball valve has two types of valve body structure: 2-piece and 3-piece. Valve body may be connected by bolts or welding.
C. BTL mainly manufactures 3 types of standing ball valve: forged steel standing ball valve, all-welded standing ball valve and cast steel standing ball valve.
D. User may select full-size or reducing structure as required. The aperture of rate of full-size valve shall be same with inner diameter of pipeline for pipeline cleaning.