HVOF Coated Throttle Valve Stem - Durable Oilfield Solution from China Suppliers and Factory
Product Description
Product Specifications
Type |
Choke Valve Stem |
Nominal Diameter |
1-13/16"/ 2-1/16"/ 2-9/16"/ 3-1/16"/ 3-1/8"/ 4-1/16"/ 5-1/8"/ 6-5/8"/ 7-1/16"/ 9"/ 11"/ 13-5/8" Customization based on drawings/samples supported |
Working Pressure |
2000psi(2K)/ 3000psi(3K)/ 5000psi(5K)/ 10000psi(10K)/ 15000psi(15K)/ 20000psi(20K) (standard, high pressure, ultra-high pressure grades) |
Length |
80mm–600mm (non-standard lengths customizable) |
Media |
Crude oil, natural gas, oilfield wastewater, sand-containing media, acid and alkali corrosive media |
Material |
40CrNiMoA, 42CrMo, 304/316/316L Stainless Steel, 17-4PH and other oilfield-specific materials |
Working Temperature |
-46℃ - +121℃ |
Hardness |
HRC75 |
Bonding Strength |
≥70MPa |
Porosity |
＜1% |
Surface Treatment |
Supersonic spraying of cobalt-bonded tungsten carbide (WC/Co)/cobalt-chromium-bonded tungsten carbide (WC/CoCr)/cobalt-chromium tungsten alloy (Stellite 20#/NiCr)/nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr)/nickel-based alloy (Ni60/Ni55)/nickel-based tungsten carbide (WC/Ni) |
Coating Thickness |
0.03-0.5mm (Customizable) |
Applicable equipment |
Oilfield throttle valves, wellhead regulating valves, drilling equipment, wellhead valves |
Customization services |
Support OEM/ODM, processing based on drawings, material customization, coating customization |
Product Features
High-Quality Base Material
Utilizing oilfield-grade alloy steel/stainless steel forged base material, it boasts high tensile strength and excellent impact toughness. It remains unbent, undeformed, and unbreakable under long-term high-pressure conditions, exhibiting operational stability far exceeding that of valve stems made from ordinary materials.
Supersonic Spraying
The surface features an HVOF supersonic sprayed alloy coating with strong adhesion and high density. It offers outstanding wear resistance, erosion resistance, acid and alkali resistance, and anti-cavitation performance, extending the service life of valve stems by 3-5 times compared to ordinary ones.
Precision Machining
Precision machined on CNC lathes and cylindrical grinders, it achieves high dimensional accuracy and excellent coaxiality, perfectly fitting the valve seat, seals, and valve body. This ensures excellent sealing, sensitive adjustment, and eliminates jamming and leakage.
Stable Application
Resistant to high and low temperatures, high pressure, and corrosion from oil and gas media, it is suitable for complex and harsh conditions such as onshore oilfields, offshore drilling platforms, and oil and gas gathering and transportation systems. It offers strong versatility and a low failure rate.
Flexible Customization
Materials, dimensions, coatings, and connection structures can be customized according to customer drawings, equipment models, and operating conditions. Compatible with various domestic and international brands of choke valves and regulating valves for maintenance and new equipment.
Factory Direct Supply
Produced directly from the source factory, with mature technology, stable quality, and strong bulk supply capabilities. Compared to purchasing imported parts, costs are lower, and delivery cycles are shorter, making it suitable for long-term cooperation and bulk purchases.
Product Packaging
- Standard Export Packaging
- Inner packing: Rust-preventive protective bag
- Outer packing: Fumigation-free plywood case or carton
- Shock-resistant, moisture-proof and corrosion-resistant, ensuring safe delivery by sea.
Product Transportation
- Logistics & Transportation
- Sea Freight
- Land & Rail Transportation
Frequently Asked Questions (FAQ)
Q: What is the main function of the choke valve stem?
A: It is a core moving component used in oil drilling and wellhead equipment to control flow, regulate pressure, and cut off the medium. It is typically used with choke valves, regulating valves, and gate valves.
Q: What materials are used to manufacture the valve stem?
A: The base material is made of high-strength oilfield-specific materials such as 40CrNiMoA, 42CrMo, 304/316/316L Stainless Steel, and 17-4PH.
Q: How does the HVOF coating benefit the product?
A: The High-Velocity Oxygen Fuel (HVOF) spraying applies a wear-resistant alloy coating that provides exceptional resistance to wear, erosion, acid, alkali, and high pressure, extending the service life by 3-5 times compared to ordinary stems.
Q: What is the working pressure range for these valve stems?
A: The working pressure ranges from 2,000 psi (2K) up to 20,000 psi (20K), perfectly covering standard, high-pressure, and ultra-high-pressure operational grades.
Q: Can the valve stems be customized to specific requirements?
A: Yes, we fully support OEM/ODM customization based on your drawings and samples, including custom lengths, specific materials, and tailored coating thicknesses (0.03-0.5mm).
Q: How are the products packaged for transportation?
A: They are packed in standard export packaging featuring an inner rust-preventive protective bag and an outer fumigation-free plywood case or carton, ensuring safe, moisture-proof delivery by sea or land.