Parallel Slide Gate Valve Supplier
ZONCIC supplies parallel slide gate valves for steam systems, refinery units, petrochemical plants, oil and gas facilities, and power generation projects. With a stable parallel disc structure and dependable sealing performance, our valves are designed for high-temperature and high-pressure industrial isolation service.
Looking for Parallel Slide Gate Valve Supplier?
Send us your size, pressure class, material, quantity, and service condition. We provide fast quotation and technical support for steam valve, refinery valve, and high-temperature gate valve projects.
- Fast quotation support for distributors and EPC projects
- OEM and custom valve support available
- Export packing and project supply support
Industrial Parallel Slide Gate Valve Supplier for High-Temperature Service
A parallel slide gate valve is an isolation valve that uses parallel discs instead of a wedge-shaped gate to control media flow. This design is often selected for steam and high-temperature service because it can provide smooth operation, dependable shut-off, and reduced risk of thermal binding in demanding conditions.
ZONCIC manufactures parallel slide gate valves for power stations, refinery units, petrochemical plants, thermal systems, and general industrial pipelines. We focus on precision machining, stable sealing performance, export-ready manufacturing quality, and project support for distributors, EPC contractors, and end users.
If you are also comparing other industrial shut-off valves, you may review our gate valve category, our wedge gate valve page, or browse the complete industrial valves collection.
What Is a Parallel Slide Gate Valve?
A parallel slide gate valve is a linear motion shut-off valve that uses parallel discs or a slide gate assembly to isolate flow. Instead of relying on wedging force, the discs seal against the seats through valve movement and pressure assistance. This structure is especially suitable for high-temperature and steam systems where smooth operation and dependable shut-off performance are important.
Parallel slide gate valves are commonly used in power plant steam systems, refinery units, petrochemical plants, and other industrial services where thermal operating conditions are severe. For general gate valve comparison, you may also check our gate valve overview.
Key Features of Parallel Slide Gate Valve
Reliable Shut-Off Performance
The parallel disc design provides dependable sealing performance in steam, thermal, and industrial isolation systems.
Suitable for High-Temperature Service
Widely used in high-temperature and high-pressure pipeline systems where operating stability is important.
Reduced Thermal Binding Risk
Compared with wedge-type structures, parallel slide valves can perform better in some thermal expansion conditions.
Heavy-Duty Industrial Use
Applicable in refinery, petrochemical, power generation, boiler, and general industrial pipeline systems.
Parallel Slide Gate Valve for Steam and High-Temperature Service
Parallel slide gate valves are often selected for main steam lines, auxiliary steam systems, refinery thermal units, petrochemical plants, and heavy industrial pipelines where high temperature and pressure make operating stability critical. Their structure is well suited for shut-off duty in severe thermal service.
For international valve standards and industrial design reference, you may also review ASME standards and compare related shut-off structures in our wedge gate valve page.
Technical Specifications
| Item | Description |
|---|---|
| Valve Type | Parallel Slide Gate Valve |
| Size Range | 2″ to 48″ |
| Pressure Rating | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Body Materials | WCB, WC6, WC9, LCB, CF8, CF8M, Alloy Steel |
| Disc / Seat Materials | 13Cr, F6a, SS304, SS316, Stellite Overlay |
| Connection Ends | Flanged, Butt Weld |
| Operation | Manual, Gear Operated, Electric Actuated |
| Design Standard | API 6D, ASME B16.34, Manufacturer Standard |
| Face to Face | ASME B16.10 |
| Flange Standard | ASME B16.5 / ASME B16.47 |
| Testing Standard | API 598 / Project Standard |
For buyers reviewing technical compliance, you may compare this valve with our gate valve for oil and gas page and related industrial valve options.
Main Parts and Materials
| Part | Standard Material Options |
|---|---|
| Body | WCB, WC6, WC9, LCB, CF8, CF8M |
| Bonnet | WCB, WC6, WC9, LCB, CF8, CF8M |
| Gate / Disc | WCB+13Cr, SS304, SS316, Stellite Overlay |
| Seat Ring | 13Cr, SS304, SS316, Stellite |
| Stem | F6a, 410 SS, 304 SS, 316 SS |
| Packing | Flexible Graphite, PTFE |
| Gasket | Graphite, Spiral Wound Gasket |
| Bolting | B7, B8, B8M, L7 |
| Handwheel / Gear | Carbon Steel, Ductile Iron |
Main Dimensions (Class 300 Example)
| NPS | DN | L (mm) | H Open (mm) | Handwheel / Gear (mm) |
|---|---|---|---|---|
| 2″ | 50 | 216 | 390 | 200 |
| 3″ | 80 | 282 | 470 | 250 |
| 4″ | 100 | 305 | 560 | 280 |
| 6″ | 150 | 403 | 760 | 320 |
| 8″ | 200 | 419 | 930 | 360 |
| 10″ | 250 | 457 | 1080 | 400 |
| 12″ | 300 | 502 | 1240 | 450 |
Note: Dimensions are for reference only. Final dimensions depend on pressure class, design configuration, and project requirements.
Manufacturing Standards, Quality Control & Packing Delivery
Manufacturing Standards & Quality Control
ZONCIC parallel slide gate valves are manufactured under strict process control to ensure accurate dimensions, smooth gate movement, and dependable shut-off performance in high-pressure and high-temperature service.
- Raw material verification and heat number traceability
- Casting or forging inspection before machining
- Precision CNC machining for body, bonnet, discs, stem, and seating surfaces
- Assembly inspection for disc movement and sealing alignment
- Dimensional inspection and visual appearance check
- Hydrostatic shell test and seat leakage test according to API 598
- PMI, UT, MT, PT and third-party inspection available on request
Packing & Delivery
We provide professional export packing for parallel slide gate valves to ensure safe transportation, clean protection, and reliable overseas delivery for project and wholesale orders.
- Valve openings protected before packing
- Anti-rust treatment available for export shipment and storage
- Clear marking for size, pressure class, material, and traceability
- Strong export plywood or wooden case packing
- Suitable for container loading and long-distance shipment
- OEM labels, project packing, and export documents supported
Parallel Slide Gate Valve Applications
Power Plant Steam Systems
Widely used in main steam, auxiliary steam, and high-temperature thermal systems where dependable shut-off is required.
Refinery Units
Suitable for refinery process lines and utility systems that require durable isolation valves for heavy-duty service.
Petrochemical Plants
Applied in high-temperature and process-critical pipeline systems handling steam, hydrocarbons, and industrial media.
Oil and Gas Facilities
Used in processing and pipeline systems that require robust shut-off valves with strong structural reliability.
Boiler and Thermal Units
Well suited for boiler auxiliaries and thermal operating environments where temperature stability is important.
General Heavy Industry
A practical isolation valve choice for industrial pipeline systems requiring durable performance and reliable shut-off.
For general oil and gas shut-off valve applications, you may also review our gate valve for oil and gas page.
Why Choose Our Parallel Slide Gate Valve
Stable Manufacturing Quality
From raw materials to final testing, every parallel slide gate valve is produced under controlled manufacturing procedures.
Reliable High-Temperature Performance
Designed for demanding steam and thermal service where stable valve operation is essential.
OEM & Project Support
We support customized materials, dimensions, documentation, and inspection requirements for project orders.
Professional Export Service
Fast quotation, stable production, and secure packing help global buyers source industrial valves with confidence.
As an experienced parallel slide gate valve supplier, ZONCIC supports distributors, EPC contractors, and industrial project buyers with reliable valve quality, fast quotation, and export-ready delivery.
FAQ
What is the difference between parallel slide gate valve and wedge gate valve?
A parallel slide gate valve uses parallel discs or a slide gate structure, while a wedge gate valve uses a wedge-shaped disc. Parallel slide designs are often preferred in steam and high-temperature systems where thermal operating conditions are more demanding.
Where is a parallel slide gate valve commonly used?
It is commonly used in power plants, steam systems, refinery units, petrochemical plants, boiler systems, and other industrial applications involving high temperature and high pressure.
Can you provide customized parallel slide gate valves?
Yes. We can provide customized sizes, pressure classes, materials, end connections, actuation methods, and inspection requirements according to project specifications.
Do you provide export documents and inspection reports?
Yes. We support material certificates, test reports, inspection records, packing lists, and other export documents required for international valve supply.
Request a Fast Quote for Parallel Slide Gate Valve
Send us your size, pressure class, material, quantity, and service condition. Our team will provide fast quotation and technical support for steam valve, refinery valve, and high-temperature pipeline projects.
- Quotation support for project and distributor orders
- OEM and customized valve support available
- Technical response for steam and thermal applications
- Fast export quotation and packing support
Before sending your RFQ, you may also review our gate valve category and the full industrial valves overview.