PVC Flange Guard

Product Overview

Designed for chemical processing, water treatment and industrial piping systems, PVC flange guards help reduce splash hazards while allowing maintenance personnel to quickly identify leaks through the built-in pH indicator.

Suitable for ANSI, ASME, DIN, EN, JIS and custom flange standards, these guards are also available for valves, strainers and other pipeline components.

Core Design Features

• Temporary Chemical Splash Protection — Designed to provide temporary containment and redirection of accidental chemical spray-outs, helping protect personnel and nearby equipment during flange or valve leakage incidents.
• Reflective Safety Strip — Improves visibility in low-light industrial areas, making protected piping components easier to identify during inspections and maintenance.
• Integrated Leak Detection Indicator — Built-in pH indicator paper provides a quick visual indication of acidic or alkaline leakage. Larger indicator windows are available for enhanced visibility.

• Flexible Custom Design — Available in various sizes, flange standards and equipment configurations, with optional drain valves, customized pH indicator sizes and company logo printing.
• UV & Weather Resistant Design — Suitable for both indoor and outdoor installations, with a typical service life of up to 2 years indoors and 1 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 PVC 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. Is it resistant to acids and alkalis?

Yes. The PVC material offers reliable resistance to many common acids and alkalis used in industrial applications. Material selection should always be confirmed for specific chemicals and concentrations.

2. What is the operating temperature range?

The PVC flange guard is designed for operating temperatures from -15°C to +90°C.

3. Are custom sizes available?

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

4. Can it be installed on valves?

Yes. In addition to standard flanges, PVC guards can also be manufactured for ball valves, gate valves, globe valves, butterfly valves and other pipeline components.