The check valve is a kind of one-way valve, which relies on the pressure of the medium to realize the metal seal between the spool and the valve body, the greater the medium pressure, the better the sealing performance.
Product Description
The check valve is a kind of one-way valve, which relies on the pressure of the medium to realize the metal seal between the spool and the valve body, the greater the medium pressure, the better the sealing performance. The check valve design and manufacture of APImeivalve fully meet the requirements of API spec 6A and can be used interchangeably with equipment conforming to API spec 6A.
The valve body is made of alloy steel forging, with strong mechanical properties, and can withstand high pressure, with safe and reliable performance. The bonnet and valve body are bolted together, and the seal is the sealing ring on the bonnet and the inner wall of the valve body. The sealing performance is reliable. It provides minimal assembly clearance between the bonnet and body (designed to be 0), thereby reducing erosion of bolts and holes by corrosive media and reducing bolt loads.
Hard alloy is hard-faced on the core and sealing surface of the valve body so that it has good wear resistance and corrosion resistance. The core material should use sulfur-proof steel, and other parts should use the method of limiting hardness so that the valve can be used in an environment containing H2S.
Install the valve body into the pipeline according to the flow direction on the valve body. The valve core by the upper and lower pressure to achieve movement and sealing so that the valve core can not be stuck.
Technical Parameters
1. One-way flow of the working medium.
2. Working pressure: 2,000 psi ~ 20,000 psi
3. Nominal diameter: 2.1/16 "~ 4.1/16" (52mm ~ 103mm)
4. Working medium: oil, natural gas, mud, H2S and CO2 gas
5. Operating temperature: -46C ~ 121C (LU level)
6. Material level: AA, BB, CC, DD, EE, FF, HH
7. Specification level: PSL1 ~ 4
8. Performance level: PR1 ~ 2
Globe Valves are extensively used through-out the Refineries,Hydrocarbon,Energy and process & the power industries. Size: 2" up to 24" (DN 50 up to DN 600) Pressure Rating: ASME 150# to 2500# Materials: Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay Design Standard: BS 1873, API 623 Pressure / Temperature Rating: ASME B 16.34 Test (Inspection) Standard: API 598,ISO 5208,BS 6364 Construction Details: Bolted Bonnet / Pressure Seal Bonnet, OS & Y Type Rising Stem End Connection: Flanged,Butt-Weld Operator / Actuator: Handwheel Gear, Actuator (Pneumatic, Hydraulic, Electro-Hydraulic and Electric Motorised) Cryogenic Service: Globe Valves can be designed in a special version suitable for cryogenic service. In this case, all the materials and technical features are designed to withstand minimum design temperature required by the Customer, down to Cryogenic -196'C. If required by the customer, specific Cryogenic Tests are performed to verify the behaviour of production valves in terms of valve torque, sealing capability, emissions vs the ambient
Check valves are basically the type of valves which prevent the backflow of the fluid or gas traveling through that specific pipeline. The liquids or gases flowing through non-return valves flow in single direction mainly. These poppet check valves consist of two openings which mainly allows the fluid or gas to enter from one end and leave from the other end. If the flow turns and no check valve is installed, water hammer can occur. Water hammer often occurs with an extreme force and will easily damage a pipeline or components. Check valves are used in many different applications. For example they are often placed on the outlet side of a pump, to protect the pump from backflow. Centrifugal pumps are not self-priming, and therefore check valves are essential for keeping water in the pipes. Also, check valves are very often used in HVAC-systems (Heating, Ventilating and Air Conditioning-systems).
CHECK VALVE (NON RETURN VALVE): Feature Type : Bolted Cover, Swing Type, Lift Type, Wafer Type Design Disc : Composition Disc, Metallic Disc. Size Range : 15mm To 400mm & Above On Request Pressure Rating : 150#, 300#, 400#, 600#, 800#, 900#, 1500#. End Connection : Flanged Ends, Socket Weld Ends, Screwed Ends & Butt-Weld Ends. Mfg. Std. : BS-1868, API - 6D Testing : BS - 6755-1, API-6D Material Of Construction : Cast Carbon Steel (ASTM A 216 GR. WCB, ASTM A 217 GR. WC6, WC9), Forged Steel (ASTM A 105, ASTM A 182 GR. F22, F304, F316) Cast Stainless Steel (ASTM A 351 GR. CF8, CF8M, CF3, CF3M), Alloy 20 To ASTM A 351 GR. CN7M
Check Valve Features & Specialities Size Range - 1/2" to 32" Pressure Rating - 150#, 300#, 600#, 800#, 900#, 1500# Certifications - IBR, CE, Atex, etc. Swing Check, Lift Check & Dual Plate Check types available Inspected & Witnessed By third party agencies - API Valves, ATex Valves, CE Valves, Process Valves, Gas Valves, Water Valves, Cryogenic Service, Fire Safe
Check valve (non return valve): Feature type : bolted cover, swing type, lift type, wafer type design disc : composition disc, metallic disc. Size range : 15mm to 400mm & above on request pressure rating : 150#, 300#, 400#, 600#, 800#, 900#, 1500#. End connection : flanged ends, socket weld ends, screwed ends & butt-weld ends. Mfg. Std. : bs-1868, api - 6d testing : bs - 6755-1, api-6d Material of construction : cast carbon steel (astm a 216 gr. Wcb, astm a 217 gr. Wc6, wc9), forged steel (astm a 105, astm a 182 gr. F22, f304, f316) cast stainless steel (astm a 351 gr. Cf8, cf8m, cf3, cf3m), alloy 20 to astm a 351 gr. Cn7m
Check valve.
Check Valve Applications - Machine tools, Construction & heavy-duty industries - Shipbuilding equipments applications. Check valve is a mechanical device which is normally used to allow easy flow of fluid or gas to in a linear direction. All our products are built using high quality materials thus offering longer durability and efficiency. We are an ISO 9001 & 14001 certified company offering environment friendly products. Our aim is to set high standards in the valve manufacturing and supplying industry through continuous R&D and process improvement. Our grease valve fins application is various types of industries including heavy-duty operational enviromnets.
One of the biggest manufacturers and exporters of industrial valves and fittings, adopts the managing pattern of collectivization with many factories. It has many subsidiary companies and production bases in shanghai and zhejiang province. With its many offices throughout the country, it devotes to the manufacture, research and development of industrial valves, pipe fittings and sealing fittings. It places premium on the manufacture of the industrial valves that have advanced world levels, and it also supplies comprehensive project solutions for the industrial clients both at home and abroad. The abilities of production quality control and sustainable creativity has been recognized by many clients both at home and abroad. Industry packing
Check valve.
Check Valve Name: Duo-disc Wafer Check Valve Spec: Cast steel,Duo Disc,Wafer type,Lug Size: DN50-600/2"-24" Series: Check Valve Pressure: 1.0-10Mpa/150Lb-600Lb