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Parallel Slide Single Disc Gate Valve

Parallel Slide Single Disc Gate Valve

High-performance Parallel Slide Single Disc Gate Valve designed for reliable shut-off in water, oil, and natural gas pipelines. Featuring a broad size range from DN50 to DN1000 and pressure ratings up to PN100 (10.0MPa). Built with durable carbon steel or cast steel, it supports multiple actuation methods including manual, electric, and pneumatic to meet diverse industrial automation needs.

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Technical Specifications

Models

Z43F, Z543F
Nominal Diamete

DN50 – DN1000
Nominal Pressure

PN16 – PN100
Applicable Temperature

-20°C to 120°C
Body Material

Carbon Steel, Cast Steel (WCB)
Applicable Media

Water, Natural Gas, Oil
Actuation

Handwheel, Electric, Pneumatic
Gate Valve Standard

JB/T 5198-1991
Inspection & Testing

JB/T 9092-1999
Pressure Test Standard

GB/T 13927-1992
Flange Standard

JB/T 79.1-79.2-1994

Discription

Product Overview

 

  • Multiple Configurations: Available in through-conduit (with diverting hole), non-through-conduit, and regulating types to suit various working conditions.

  • Versatile Applications: Widely used in transmission pipelines for natural gas, petroleum, chemicals, and venting systems as reliable opening and closing equipment.

  • Optimized for Long-Distance Pipelines: Specifically designed for natural gas extraction and purification in long-transmission pipeline networks.

  • H2S Resistance: Sour service series are engineered for harsh environments with high hydrogen sulfide content, high flow velocities, heavy impurities, and severe corrosion.

Structural Features

 

  1. Body Construction: Available in both cast and welded structures. The short non-through-conduit type utilizes a welded design for a lightweight and compact profile, ideal for weight-sensitive installations.

  2. Floating Valve Seats: Features a floating seat structure that ensures a reliable bi-directional seal at both the inlet and outlet.

  3. Double Sealing System: The seat provides a double-sealing function. Integrated PTFE components automatically clear sand and impurities to maintain a perfect seal.

  4. Hard Sealing Reliability: Sealing surfaces are hard-faced with Cobalt-based alloy (Hardness HRC44-52) to guarantee long-term operational reliability.

  5. Sealing Surface Protection: In through-conduit designs, the gate and seat maintain constant contact, preventing direct erosion from the medium and extending service life.

  6. Fire-Safe Design: Complies with API 6FA and API 607 standards, making it suitable for hydrocarbon fluids and oil/gas pipelines requiring fire protection.

  7. Full-Bore Flow: When fully open, the flow path is a straight conduit with minimal flow resistance and pressure loss, allowing for easy pigging operations.

  8. Auto-Relief Safety: Equipped with an automatic pressure relief device to ensure system safety.

  9. Fully Enclosed Structure: Provides excellent protection, ensuring reliable performance in all-weather environments.

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