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  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
  • COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve
COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve

COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve

  • 1 - 99 Pieces
    $458
  • 100 - 499 Pieces
    $438
  • >= 500 Pieces
    $399

Customization:

Customized logo（Min.Order: 1 pieces）
Customized packaging（Min.Order: 1 pieces）
Graphic customization（Min.Order: 1 pieces）
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COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Pressure Fluid Control: Designed to regulate the flow of fluids (water, steam, corrosive liquids) under high-pressure conditions using a stainless steel diaphragm and globe valve structure.
  • Precision Actuation: Equipped with pneumatic or electric actuators for accurate on-off control and throttling, enabling seamless flow regulation in industrial and commercial systems.
  • Multi-Function Valve Types: Combines features of gate valves, stop valves, and globe valves to handle both shut-off and flow modulation tasks efficiently.

Key features

  • 1. Corrosion-Resistant Stainless Steel Construction

    • With a corrosion-resistant stainless steel (SS304/alloy) body, ensure durability in harsh environments such as high-temperature or corrosive fluid applications. Outlasting traditional cast iron valves by up to ~30%* due to enhanced material integrity.

  • 2. Pneumatic Actuator with Multi-Mode Control

    • With the pneumatic actuator, achieve remote operation and seamless switching between manual/automatic modes, reducing manual adjustments by ~50%* compared to purely manual valves.

  • 3. Globe Design for Efficient High-Pressure Performance

    • With the globe valve design, maintain stable flow under high pressure while reducing pressure loss by ~20%* compared to standard gate valves, optimizing energy efficiency.

  • 4. Industrial-Grade Reliability for Continuous Operation

    • With robust construction, supports uninterrupted 24/7 commercial use in industrial settings, ideal for demanding applications like fluid regulation in factories or power plants*.

  • 5. EU-Compliant Certification Standards

    • With CE and RoHS certifications, ensure compliance with EU safety and environmental regulations, enabling seamless export and eco-friendly installations*.

Product details

COVNA Pneumatic Control Valve DN20-DN300 Diaphragm Control Globe Valve Pneumatic Stainless Steel Knife Gate Valve

The COVNA Pneumatic Control Valve DN20-DN300 is a high-performance diaphragm control globe valve designed for precise fluid regulation in industrial applications. Built with corrosion-resistant stainless steel (SS304/Alloy 202) and pneumatic/optional electric actuators, it ensures reliable operation under high-pressure conditions. Certified to CE and RoHS standards, this valve combines durability with customizable features for diverse fluid-handling needs.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialStainless Steel (SS304/Alloy 202)Corrosive or high-temperature fluids
Size RangeDN20–DN300Scalable for pipelines of varying scales
Actuator TypePneumatic/Electric (customizable)Remote or automated control systems
DesignDiaphragm-controlled globe valvePrecise flow throttling and pressure regulation
Pressure RatingUp to 420 bar (model-dependent)High-pressure industrial pipelines
CertificationsCE, RoHSCompliance with EU safety and environmental standards

Customization guide

Adjustable parameters include actuator type (pneumatic vs. electric), seal material (e.g., PTFE for chemical resistance), and valve body size to meet specific pressure, temperature, or fluid compatibility requirements.

Get inspired

With its compact globe design and diaphragm mechanism, the COVNA valve optimizes flow efficiency while minimizing pressure drop. Ideal for applications like steam control, chemical processing, or oil & gas systems, it balances precision and durability in harsh environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Pressure250 bar+35% (340 bar)*+70% (420 bar)*
Flow Precision±5% accuracy±2% (enhanced)±1% (premium)
Material GradeSS304Alloy 202Duplex Stainless Steel
Actuator OptionsPneumatic onlyPneumatic/ElectricDual + smart sensors

Supplier's note

  1. Key Breakthroughs:

    • Diaphragm Control Mechanism: Enables ±1% flow precision in the Pro model, outperforming traditional globe valves.
    • Alloy 202 Construction: Offers 40% higher corrosion resistance than SS304, critical for chemical processing.
    • Dual-Power Actuators: The Advanced/Pro models allow seamless switching between pneumatic and electric control for hybrid systems.

  2. Optimal Selection:

    • Base Model: Suitable for standard industrial pipelines (e.g., water/steam) where cost-efficiency is prioritized.
    • Advanced Model: Ideal for facilities requiring electric/pneumatic flexibility, such as food processing or HVAC systems.
    • Pro Model: Engineered for extreme conditions (e.g., oil refineries, high-pressure chemical plants) with its 420 bar tolerance and smart diagnostics.

*Comparative benchmarks: Industry standard high-pressure valves typically max at 320 bar.

Frequently asked questions

  • Which pneumatic control valve model suits high-pressure industrial systems like chemical plants?

  • How do I maintain a stainless steel knife gate valve to prevent corrosion?

  • What’s the difference between a globe valve and a gate valve in the COVNA product line?

  • Can I customize a pneumatic control valve with an electric actuator for remote operation?

  • Is the diaphragm design in the stainless steel control valve FDA-approved for food-grade applications?

  • Which material in the COVNA valve ensures longevity in high-temperature steam systems?

  • How does the COVNA pneumatic control valve handle sudden pressure spikes in pipelines?

  • Are there certifications for explosion-proof operation in hazardous zones for the knife gate valve?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionCorrosive environments (e.g., chemical plants)Industry Standard: Carbon Steel (ASTM A36)
Our Base: SS304 (ASTM A240) ▲ (Resists corrosion)
Our Advanced: Alloy 20 (ASTM A777) ▲▲ (Withstands aggressive chemicals)		Base: 30% lighter than carbon steel; Advanced: 50% higher corrosion resistanceAdvanced version increases cost by ~20% due to specialized alloy
Actuator TypeIndustrial automation (e.g., oil refineries)Industry Standard: Manual or basic pneumatic actuator
Our Base: Pneumatic (ISO 5211) ▲ (Quick response)
Our Advanced: Electric/Pneumatic Hybrid ▲▲ (ISO 5211 + IEC 60947)		Base: 40% faster actuation than manual; Advanced: Remote programmabilityBase requires compressed air; Advanced adds ~$500 to cost
Pressure RatingHigh-pressure systems (e.g., power plants)Industry Standard: 450 PSI (ASME B16.34)
Our Base: 600 PSI ▲ (ASME B16.34)
Our Advanced: 1000 PSI ▲▲ (ASME B16.34)		Base: Handles 33% higher pressure; Advanced: 122% above industry standardBase increases weight by 15%; Advanced requires reinforced mounting
Valve DesignFlow regulation (e.g., pipelines)Industry Standard: Gate Valve (ISO 523)
Our Base: Globe Valve (ISO 14343) ▲ (Minimizes pressure drop)
Our Advanced: Globe with V-port ▲▲ (Precision throttling)		Base: 25% lower pressure loss; Advanced: ±2% flow accuracyBase adds 20% more space; Advanced requires skilled installation
CertificationsEU-regulated industriesIndustry Standard: Basic CE certification
Our Base: CE + RoHS ▲ (Complies with EU directives)
Our Advanced: CE + RoHS + ISO 9001 ▲▲ (Full quality assurance)		Base: Access to EU markets; Advanced: 40% fewer compliance auditsN/A (no direct disadvantages, but certifications add R&D costs)
Control PrecisionSensitive processes (e.g., pharma)Industry Standard: ±5% accuracy (ISO 5208)
Our Base: ±3% ▲ (ISO 5208)
Our Advanced: ±1% ▲▲ (ISO 5208)		Base: 40% more precise; Advanced: 80% better than industry standardBase requires calibration tools; Advanced doubles control system complexity

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