OEM ODM Petroleum Valve Core and Valve Seat
This is a tungsten carbide valve core and seat pair designed for use in petroleum and petrochemical pumps. The core and seat are pressed and sintered to match the buyer's drawing. The core is used to control flow and reduce leakage in the…
Product Overview
This is a tungsten carbide valve core and seat pair designed for use in petroleum and petrochemical pumps. The core and seat are pressed and sintered to match the buyer's drawing. The core is used to control flow and reduce leakage in the valve body. The seat supports the core and maintains sealing under pressure. Both parts are made from cemented carbide with a tailored cobalt content to suit the operating conditions.
Key Benefits
- Long service life in abrasive and corrosive environments due to exclusive raw material formula and wear-resistant additives
- Stable quality with good density and high comprehensive performance across all production batches
- Lower processing cost because of small tolerance margin on boundary dimensions after sintering
- Reduced valve leakage and improved sealing performance when the core and seat are matched as a pair
- Chemically stable against acid, alkali, alcohol, ether, hydrocarbons, oil, detergent, and sea water
Technical Data
Values below come from the product data we publish. Anything not listed is confirmed against your drawing at quotation.
| Material | Cemented tungsten carbide (WC-Co) |
|---|---|
| Shaping | Pressed and sintered from existing or new moulds |
| Finish | Ground to drawing |
| Dimensions | To customer drawing |
| Lead Time | Stock items 3-5 days after payment; customised items quoted per order |
| Grades Available | YG6 YG8 YG10 YG15 YL10.2 and equivalents, selected against the fluid and load |
Problems It Solves
- Steel valve cores and seats wear out quickly when exposed to abrasive fluids, leading to frequent pump teardowns
- Clearance increases between core and seat as wear progresses, causing internal leakage and reduced efficiency
- High grinding allowance on finished parts increases processing cost and time for each unit
- Chemical attack from acids, alkalis, or sea water reduces the life of parts not designed for such environments
Who It Is For
- Petroleum and oilfield pump manufacturers requiring wear-resistant valve components
- Petrochemical plant maintenance teams replacing failed steel or coated valve seats
- Mould and die shops sourcing matched carbide pairs for high-wear applications
- Trading companies and distributors supplying spare parts for pumps with consistent quality
Application Scenarios
- Valve core and seat in submersible oil pumps handling sand-laden crude
- Wear-resistant valve components in slurry pumps processing mineral tailings
- Sealing pairs in centrifugal pumps where sea water causes rapid steel corrosion
- High-pressure injection valves in petrochemical plants with cyclic operation and solid particles
Technical Features
- Pressed on an imported press for consistent green density and shape
- Sintered in an over-pressure sintering furnace to close residual porosity and stabilise density
- Exclusive raw material formula with wear-resistant additives to extend service life
- Regular geometry with small tolerance margin on boundary dimensions after sintering
- Complete range of existing moulds allows fast production cycle even for non-stock items
Materials and Grades
- WC-Co cemented carbide with cobalt content selected for the balance of hardness and toughness required by the duty
- Lower cobalt grades such as YG6 for maximum wear resistance in clean abrasive service
- Higher cobalt grades such as YG15 for better impact resistance under pressure shock
Customisation Options
- Manufactured to customer drawings including non-standard and specially shaped cores and seats
- Grade selected to match the fluid, abrasive load and pressure cycle
- Matched core and seat pairs supplied together for consistent performance
- Samples produced for pre-testing before bulk release
How This Part Is Made
Drawing review and grade selection
Mould selection or new mould development
Powder blending
Pressing on imported press
Over-pressure sintering
Grinding to drawing
Dimensional and physical property inspection
Packing and shipping
Quality Control
- Physical properties, shape and tolerance are checked before shipping
- Every order is tested before bulk production is released
- Inspection photographs of the finished order are sent for confirmation before delivery
Use Guide
- Send the drawing with the fluid, solids content, temperature and pressure cycle so the grade can be matched properly
- Order the core and seat together so the mating surfaces are lapped as a pair
- Support carbide parts on a full seat face; point loading on an unsupported edge can cause chipping
- Do not shock a cold carbide part into hot service; allow the assembly to equalise temperature
- Keep one sample from the first batch for comparison when measuring a repeat order
How It Compares With The Alternatives
| Alternative | Trade-off |
|---|---|
| Hardened steel valve core and seat | Steel is cheaper per piece and easier to machine, but erodes quickly in sand-laden or corrosive fluid, leading to higher downtime and replacement frequency |
| Ceramic valve core and seat | Ceramic offers similar chemical resistance but is more brittle under pressure shock; carbide handles impact better in cycling valves |
| Coated or hardfaced core and seat | A coating wears through and then the base metal fails rapidly; solid carbide wears uniformly across the entire section |
OEM ODM Petroleum Valve Core and Valve Seat FAQ
Are you a trade company or a manufacturer?
A manufacturer. The company has produced tungsten carbide parts for over 15 years and takes on design and processing of carbide products with technical support.
Where is your factory located?
Zhuzhou City, Hunan Province, China, which is the country's tungsten carbide production base.
Can you produce the products according to my own drawing?
Yes. OEM and ODM to customer drawings is standard, including non-standard and specially shaped parts.
Can I get a sample before placing a bulk order?
Yes. Samples are available for pre-testing. Send the drawing and service conditions and a sample can be quoted.
How long will it take to execute my order?
Stock items are shipped 3-5 days after payment is received. Customised items are given a delivery time in the quotation.
How do I know the parts were checked before they shipped?
Physical properties, shape and tolerance are inspected before shipping, and detailed inspection photographs of the order are sent for confirmation before delivery.
Which grade should I choose?
It depends on the fluid and the load. Lower cobalt grades such as YG6 give the best wear resistance in clean abrasive service; higher cobalt grades such as YG15 tolerate impact and pressure shock better. Send the operating conditions and a grade will be recommended.
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Send the drawing or the dimensions plus what the part runs against. Samples are available for pre-testing before a bulk order.