PTFE Coated Flange Guard

Product Overview

PTFE-coated flange guards combine excellent chemical resistance with high mechanical durability, making them an economical solution for splash containment in most industrial piping systems.

The integrated transparent FEP window allows operators to quickly detect leakage without removing the guard, helping improve maintenance efficiency and workplace safety.

Available for ANSI, ASME, DIN, EN, JIS and custom flange standards.

Core Design Features

• PTFE-Coated Protective Fabric — Provides excellent resistance to acids, alkalis and most industrial chemicals while offering long-term durability for demanding environments.
• Transparent FEP Inspection Window — Allows operators to visually detect leakage immediately without removing the shield.
• Integrated Leak Detection Indicator — Built-in leak indicator paper provides an immediate visual warning when leakage occurs, helping maintenance teams identify and respond to potential hazards at an early stage.
• Chemical Spray Shield Protection — Designed to contain and redirect accidental liquid spray caused by flange leaks, helping reduce risks to personnel, equipment, and surrounding work areas.
• Optional Drain Valve System — An optional drain valve can be added to safely channel leaked chemicals into a collection container, minimizing environmental contamination and simplifying leak management.
• UV & Weather Resistant Design — Suitable for both indoor and outdoor installations, with a typical service life of up to 3 years indoors and 2 years outdoors under normal operating conditions.

Key Advantages

• Excellent Chemical Resistance — PTFE provides outstanding resistance to: Sulfuric Acid， Hydrochloric Acid， Nitric Acid，Phosphoric Acid，Sodium Hydroxide，Chlorine Solutions，Various Industrial Solvents. Prevents Hazardous Chemical Spray-Outs. The flange spray shield helps contain and redirect leaking chemicals, reducing risks to personnel working near pressurized piping systems.
• Cost-Effective Protection — Offering an excellent balance of performance and cost, this design is ideal for most industrial chemical applications where high chemical resistance and durability are required.
• Wide Operating Temperature — Designed for reliable performance in temperatures ranging from -35°C to +230°C, making it suitable for both cold environments and high-temperature industrial process systems.
• Withstands Splash Pressure — Engineered to help contain accidental liquid spray-outs under pressures of up to 3 MPa, providing an additional layer of protection for personnel and surrounding equipment during flange leakage incidents.

Technical Specifications

Standard Dimensions

LXHTR PTFE coated fabric flange guards can be customized to fit various flange standards, pressure classes, valve assemblies, and special piping configurations.

Typical Applications

• Chemical Processing Plants — Protection for acid, alkali, and solvent transfer systems.
• Petrochemical Facilities — Used as PTFE flange spray shields on process piping and storage systems.
• Pharmaceutical Manufacturing — Leak containment for corrosive fluid handling systems.
• Water Treatment Plants — Protection for chemical dosing pipelines and flange connections.
• Fertilizer & Chemical Production — Improves safety around corrosive chemical transfer pipelines.

Frequently Asked Questions

1. What is the difference between a PTFE coated flange guard and a pure PTFE flange guard?

PTFE coated fabric flange guards are a durable and economical solution for most industrial applications. Pure PTFE flange guards offer superior long-term aging and weather resistance, making them ideal for highly corrosive environments and demanding outdoor service.

2. Can the guard be installed on valves?

Yes. Besides standard flanges, PTFE coated guards can also be customized for ball valves, gate valves, globe valves, butterfly valves, strainers and other pipeline components.

3. Are custom sizes available?

Yes. We manufacture guards according to ANSI, DIN, EN, JIS and custom equipment dimensions.

4. Can drain valves be added?

Yes. Optional drain valves are available for safely directing leaked liquids to a collection system.