Editorial Technical Reference

Gate/Valve

This page explains how Gate/Valve is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A flow control device within a discharge outlet that regulates or stops fluid passage.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Gate/Valve

Definition
A gate/valve is a critical component of a discharge outlet system that controls the flow of liquids, gases, or slurries by opening, closing, or partially obstructing the passageway. It functions as the primary shut-off or regulation mechanism for the outlet, ensuring controlled discharge of materials from processing equipment, tanks, or pipelines. The valve operates by moving a gate, disc, or wedge perpendicular to the flow direction, allowing full opening for maximum flow, full closure to create a seal, or intermediate positioning to regulate flow rate. Actuation can be manual via handwheel or lever, or automated using pneumatic, hydraulic, or electric actuators. Typical materials include stainless steel, cast iron, bronze, and PVC, selected based on the media and operating conditions. Key parameters for selection include nominal diameter (DN15–DN600 per ISO 6708), operating temperature (-20 to 120°C for EPDM seals; higher temperatures may require PTFE), leakage rate (Class A, 0–0.1 mL/min for metal-seated), face-to-face dimension (130–850 mm per ISO 5752), flange drilling (4–24 holes per ISO 7005-1), stem diameter (20–80 mm per ISO 5210), and weight (15–350 kg). These values are reference ranges and must be verified for the specific model and application. Compliance with standards such as ISO 6708, ISO 5208, ISO 5752, ISO 7005-1, and ISO 5210 should be confirmed with the manufacturer or supplier. The valve is designed for industrial use and requires proper installation, operation, and maintenance to ensure reliable performance and safety.
Working Principle
The gate/valve operates by moving a gate, disc, or wedge perpendicular to the flow direction. When fully open, the passage is unobstructed, allowing maximum flow. When fully closed, the gate creates a seal against the seat, stopping flow. Intermediate positions partially obstruct the passage, regulating flow rate. Actuation can be manual (handwheel or lever) or automated (pneumatic, hydraulic, or electric actuators). The sealing mechanism and materials determine the valve's suitability for specific media and pressure/temperature conditions.
Common Materials
Stainless Steel, Cast Iron, Bronze, PVC
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal DiameterDN15–DN600 mmCommon range for industrial gate valvesISO 6708
Operating Temperature-20–120 °CFor EPDM seals; higher temps require PTFE
Leakage Rate0–0.1 mL/minClass A (zero leakage) for metal-seatedISO 5208
Face-to-Face Dimension130–850 mmSeries 1 for flanged gate valvesISO 5752
Flange Drilling4–24 holesNumber of bolt holes per flangeISO 7005-1
Stem Diameter20–80 mmMatches actuator interfaceISO 5210
Weight15–350 kgDepends on size and pressure class

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Body Part
    Main housing that contains the internal components and provides connection points to the piping system
    Material: Cast Iron, Stainless Steel, or Bronze
  • Gate/Wedge Part
    Movable element that blocks or allows flow through the valve
    Material: Stainless Steel or Bronze
  • Stem Part
    Rod that connects the actuator to the gate, transmitting motion to open or close the valve
    Material: Stainless Steel
  • Seat Part
    Sealing surface where the gate contacts to create a leak-tight closure
    Material: Stainless Steel, Bronze, or Resilient Material
  • Actuator
    Mechanism (manual or automated) that operates the valve
    Material: Various (Steel, Aluminum, Plastic)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Gate/Valve.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 150 bar
flow rate: 0.1 to 10 m³/s
temperature: -20°C to 200°C
slurry concentration: Up to 40% solids by weight
Media Compatibility
✓ Water and aqueous solutions ✓ Oil and hydrocarbon fluids ✓ Industrial gases (air, nitrogen, CO2)
Unsuitable: Highly corrosive acids (e.g., concentrated sulfuric acid)
Sizing Data Required
  • Pipe diameter (DN size)
  • Required flow coefficient (Cv/Kv)
  • Pressure drop across the valve

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive erosion
Cause: High-velocity flow carrying solid particles (sand, scale, debris) that wear away sealing surfaces and internal components, especially in throttling applications.
Cavitation
Cause: Pressure drop across the valve causing localized vapor bubble formation and subsequent implosion, leading to pitting and material degradation on valve trim and body.
Maintenance Indicators
  • Visible external leakage at stem packing or body joints, indicating seal failure
  • Abnormal noise during operation (hissing, grinding, or hammering sounds) suggesting flow issues or internal damage
Engineering Tips
  • Implement proper valve sizing and selection to avoid excessive pressure drops and velocities that accelerate wear and cavitation
  • Establish routine lubrication schedules for stem threads and bearings, and perform periodic seal integrity checks to prevent premature failure

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5208:2015 (Industrial valves - Pressure testing of valves) ANSI/ASME B16.34 (Valves - Flanged, Threaded, and Welding End) DIN EN 12266-1 (Industrial valves - Testing of metallic valves)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.05mm
  • Face-to-face dimensions: +/-1.5mm
Quality Inspection
  • Hydrostatic pressure test
  • Visual and dimensional inspection

Manufacturers of Gate/Valve

9 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

ZFA Valve
Tianjin, Tianjin, CN
Founded 2006
ISO9001 CE WRAS ISO14001 +2
Managed by the manufacturer
Listed on the company's own website
BCST Group
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Neway Valve (Suzhou) Co., Ltd.
Suzhou, Jiangsu, CN
Also makes: Power Plant, Transmission Lines, Control Valve and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Convista
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Pace Pneumatics
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Plumberstar
Shanghai, CN
Also makes: Butterfly Valve, Heating System, Pressure Gauge and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
ShanDong DoFun Refrigeration Technology Co., Ltd.
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Titan Automation
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Wenzhou Newsway Valve Co., Ltd.
Wenzhou, Zhejiang, CN
Also makes: Check Valve, Ball Valve, Pneumatic Actuator and 7 more
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Frequently Asked Questions

What is the primary function of a gate/valve in a discharge outlet?

It regulates or stops the flow of fluids by opening, closing, or partially obstructing the passageway, serving as the main shut-off or regulation mechanism.

What materials are commonly used for gate/valves?

Common materials include stainless steel, cast iron, bronze, and PVC, selected based on the media and operating conditions.

How should I verify the suitability of a gate/valve for my application?

Check the model-specific parameters such as nominal diameter, pressure, temperature, leakage rate, and standards (ISO 6708, ISO 5208, etc.) with the manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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