Editorial Technical Reference

Control Gate

This page explains how Control Gate 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 mechanical or electromechanical device within a cold feed system that regulates the flow of bulk material or product.

Product Specifications

Technical details and manufacturing context for Control Gate

Definition
The Control Gate is a critical component of the Cold Feed System, responsible for precisely starting, stopping, and metering the flow of material from a storage hopper or silo onto a conveyor belt or into a downstream process. It ensures consistent feed rates, prevents material flooding, and allows for controlled batch operations. The gate operates by moving a physical barrier (e.g., a slide plate, guillotine blade, or flap) across the material discharge opening. This movement is typically actuated by a pneumatic cylinder, electric linear actuator, or manual lever. The degree of opening directly controls the cross-sectional area available for material flow, thereby regulating the throughput. The Control Gate is available in various configurations to suit different material characteristics and process requirements. Materials of construction include carbon steel, stainless steel (304/316), and abrasion-resistant steel plate, selected based on the material being handled and the operating environment. Key parameters to consider when selecting a Control Gate include nominal size (DN50–DN600), flow capacity (50–1200 m³/h), operating pressure (1.0–1.6 MPa), operating temperature (-20–80°C), leakage rate (≤0.1% of full scale per ISO 5208 Class A), actuation time (5–30 s), control accuracy (±5% of full scale), supply voltage (24 V DC ±10% for electric actuators), power consumption (50–200 W), enclosure protection (IP54–IP65 per IEC 60529), body material (WCB/CF8/CF8M per ASTM A216/A351), seat material (PTFE/PPL), and weight (15–350 kg). These values are reference ranges and must be verified for the specific model and application. The Control Gate is designed to operate within specified pressure and temperature limits; exceeding these may cause seal damage. Regular inspection and maintenance are recommended to ensure reliable operation. For procurement, verify model-specific parameters and compliance with relevant standards with the legal manufacturer or supplier.
Working Principle
The Control Gate regulates material flow by moving a barrier (slide plate, guillotine blade, or flap) across the discharge opening. The barrier is actuated by a pneumatic cylinder, electric linear actuator, or manual lever. The opening degree determines the cross-sectional area for flow, thus controlling throughput. The gate can be fully opened, fully closed, or set to intermediate positions for metering. Actuation time ranges from 5 to 30 seconds for a full cycle. The control accuracy is ±5% of full scale, allowing precise feed rate regulation. The gate is designed to operate within a pressure range of 1.0–1.6 MPa and temperature range of -20–80°C. Leakage is limited to ≤0.1% per ISO 5208 Class A when closed. The barrier movement is typically linear, and the gate is installed at the hopper or silo outlet.
Common Materials
Carbon Steel, Stainless Steel (304/316), Abrasion-Resistant Steel Plate
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal SizeDN50–DN600 mmSelect based on pipeline diameter and flow rate.ISO 6708
Flow Capacity50–1200 m³/hAt full open, pressure drop 0.1 MPa.
Operating Temperature-20–80 °CAbove 80°C may damage seals.
Leakage Rate≤0.1 %Class A per ISO 5208.ISO 5208
Actuation Time5–30 sFor full open/close cycle.
Control Accuracy±5 %Of full scale.
Supply Voltage24 ±10% V DCFor electric actuators.
Power Consumption50–200 WFor electric actuators.
Enclosure ProtectionIP54–IP65IP65 for outdoor use.IEC 60529
Body MaterialWCB/CF8/CF8MSelect per media compatibility.ASTM A216/A351
Seat MaterialPTFE/PPLPTFE for chemical resistance.
Weight15–350 kgDepends on size and material.

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
  • Gate Body / Frame Part
    Provides the structural housing and mounting flange for the gate assembly, connecting to the hopper outlet.
    Material: Carbon Steel or Stainless Steel
  • Slide Plate / Blade Part
    The moving element that physically obstructs or opens the material flow path.
    Material: Abrasion-Resistant Steel or Stainless Steel
  • Sealing Gasket / Liner Part
    Creates a dust-tight and leak-proof seal between the slide plate and the gate body to prevent material seepage.
    Material: Food-Grade Rubber, UHMW-PE, or PTFE
  • Actuator
    Provides the mechanical force to move the slide plate. Can be a pneumatic cylinder, electric linear actuator, or manual handwheel assembly.
    Material: Steel, Aluminum

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar
flow rate: 0.1 to 100 m³/h
temperature: -40°C to 150°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Dry bulk powders (e.g., cement, flour) ✓ Granular materials (e.g., plastic pellets, grains) ✓ Non-abrasive slurries (e.g., wastewater, food products)
Unsuitable: Highly corrosive chemicals (e.g., concentrated acids, strong oxidizers)
Sizing Data Required
  • Material bulk density (kg/m³)
  • Required flow rate (m³/h)
  • Particle size distribution (mm)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seat and disc erosion
Cause: Abrasive particles in fluid flow causing wear on sealing surfaces, often due to inadequate filtration or high-velocity flow conditions.
Stem binding or seizure
Cause: Corrosion buildup, lack of lubrication, or thermal expansion in stem/guide areas preventing proper gate movement.
Maintenance Indicators
  • Visible leakage around stem or body joints during operation
  • Unusual grinding or scraping sounds during gate movement
Engineering Tips
  • Implement regular lubrication schedule using manufacturer-recommended high-temperature/pressure grease for stem and guides
  • Install upstream strainers/filters and conduct periodic fluid analysis to monitor particulate contamination levels

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
ANSI/ASME B16.34 - Valves - Flanged, Threaded, and Welding End

Quoted from the published standard.

Manufacturing Precision
  • Gate seating surface flatness: 0.05mm maximum deviation
  • Stem diameter tolerance: +/-0.025mm
Quality Inspection
  • Hydrostatic pressure test (1.5x rated pressure)
  • Dimensional verification with CMM (Coordinate Measuring Machine)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Control Gate

12 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.

Bomaff Refractory
Henan, CN
more than 3000 tons of various binders, and more t staff
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “FL4200 Slide Gate Plate”
View source page ↗ bomaffrefractory.com · recorded 2026-08-21
China Firebrick
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Ladle Slide Gate Plate”
View source page ↗ chinafirebrick.com · recorded 2026-08-21
ZT Materials
Liaoning, CN
Founded 2009
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Slide Gate”
View source page ↗ ztmaterials.com · recorded 2026-08-21
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
View source page ↗ newayvalve.com · recorded 2026-08-18
DGMF Mold Clamps Co., Ltd
Dongguan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “DGMF Manual Slide Gate Valves”
View source page ↗ dgmfmoldclamps.com · recorded 2026-09-01
Hebei Ruihua Metallurgical Technology Co., Ltd.
Cangzhou, Hebei, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Ladle slide gate”
View source page ↗ ruihuaslidegate.com · recorded 2026-09-07
HYRE
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “slide gate plate”
View source page ↗ hyrefr.com · recorded 2026-09-08
Liyang Yuda Machinery Co.,Ltd
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “TZMS Series Manual Slide Gate”
View source page ↗ yudamachinery.com · recorded 2026-09-01
NTGD diaphragm valve
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Slide Gate Valve”
View source page ↗ ntgdvalve.com · recorded 2026-09-08
NTVAL
Wenzhou, Zhejiang, CN
Also makes: Butterfly Valve, Globe Valve, Check Valve and 7 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Slide Gate Valve”
View source page ↗ ntval.com · recorded 2026-09-14
Rockerhill Global Limited
Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Water Control Gate”
View source page ↗ rockerhillcn.com · recorded 2026-09-16
Shandong Sinorefractory New Materials Co., Ltd.
Jinan, Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Slide Gate Mechanism”
View source page ↗ sinorefractory.com · recorded 2026-09-08
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Frequently Asked Questions

What is the purpose of a Control Gate in a cold feed system?

The Control Gate regulates the flow of bulk material from a hopper or silo to a conveyor or downstream process. It starts, stops, and meters the flow to ensure consistent feed rates and prevent flooding.

What are the typical actuation options for a Control Gate?

Control Gates can be actuated by pneumatic cylinders, electric linear actuators, or manual levers. The choice depends on the required automation level, response time, and available utilities.

What materials are commonly used for Control Gate construction?

Common materials include carbon steel, stainless steel (304/316), and abrasion-resistant steel plate. The selection depends on the material being handled and the operating environment.

How do I verify the correct Control Gate for my application?

You must check the nominal size, flow capacity, operating pressure and temperature, leakage rate, actuation time, and other parameters against your process requirements. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Related equipment

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Control Gate.

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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