Non Sparking Flange Wedges by Pahwa MetalTech
Safe Flange Spreading and Alignment in Hazardous Piping Systems
Pahwa MetalTech's Non Sparking Flange Wedges is precision-engineered for reliable, spark-free performance in the most demanding hazardous environments. Compliant with ATEX, EN, and IS standards, these tools eliminate ignition risk in oil and gas, petrochemical, pharmaceutical, mining, and explosives industries. Every tool is quality-inspected for dimensional accuracy, alloy integrity, and functional performance before delivery, ensuring Zone 0, Zone 1, and Zone 2 classified area compliance throughout service life.
Material :
Pahwa MetalTech's Non Sparking Flange Wedges is available in two premium non-sparking alloys: QTi® (Copper Titanium) and BronAL® (Aluminium Bronze).
QTi® offers superior hardness and tensile strength for heavy-duty applications, with a longer service life than conventional beryllium copper.
BronAL® delivers excellent corrosion resistance, ideal for marine, chemical, and humid environments. Both alloys comply with ATEX, EN, and IS non-sparking tool certifications and are non-magnetic, ensuring safety in Zone 0, Zone 1, and Zone 2 classified areas. Material test reports and special certifications are available on request.
Size and Range :
Pahwa MetalTech offers the Non Sparking Flange Wedges in the following specifications: 6mm to 40mm thickness range.
The range covers the most common operational requirements for hazardous area maintenance.
All sizes are manufactured to precise tolerances for reliable fit and performance. Custom sizes and configurations beyond the standard range are available on request for specific site requirements or OEM applications. Contact Pahwa MetalTech for custom configuration enquiries.
Applications :
Pahwa MetalTech's Non Sparking Flange Wedges is used across critical hazardous industries.
Pipeline maintenance in oil and gas, petrochemical heat exchanger maintenance, refinery turnaround piping, offshore platform pipe systems, water treatment plants, and classified zones where flanges must be spread, aligned, or separated safely during maintenance operations.
In all these applications, QTi® and BronAL® non-sparking alloys eliminate ignition risk from tool-to-surface contact, protecting personnel, equipment, and facilities. These tools help operations teams comply with OISD, PESO, ATEX, and other international safety frameworks governing classified zones.
Download Our Non-Sparking Tools Catalog for Explosive Atmosphere Zones
Download our non sparking tools catalog to access a comprehensive range built for flammable work environments and safety-critical operations. Easily compare tool types, materials, and specifications to select the right solution for your requirements.
Do's
- Insert the wedge from the lower or gravity-neutral quadrant of the flange to avoid it falling out under gravity.
- Drive wedges in pairs on opposite sides of the flange to distribute the spreading load symmetrically.
- Use the smallest wedge that achieves the required gap — oversized wedges apply excessive lateral stress to the flanges.
- Mark the target gap on both flanges with a paint marker before inserting wedges as a visual progress indicator.
- Keep hands and fingers away from the wedge insertion path — sudden flange movement can trap fingers violently.
- Inspect wedge faces for cracking or battering before use — a damaged face can fragment under hammer impact.
- When spreading gasket-type joints, place protective shims under the flange faces to prevent sealing surface damage.
- After flange alignment, remove wedges progressively rather than all at once to avoid sudden pipe movement.
Donts
- Never drive a non-sparking wedge with a standard steel hammer — use a non-sparking hammer exclusively in classified zones.
- Do not use a single wedge on large-bore flanges — the off-centre load can rotate or skew the pipe section.
- Avoid wedging flanges on pressurised or live piping systems — depressurise and isolate before any flange separation work.
- Do not use a wedge that is larger than the flange gap it needs to fill — forcing an oversize wedge fractures the flange face.
- Never use flange wedges as a substitute for proper hydraulic flange spreaders on large-bore or high-pressure systems.
- Do not leave wedges inserted in flanges unattended — vibration from adjacent equipment can drive them out suddenly.
- Avoid using severely battered or deformed wedges — the irregular face concentrates stress and causes unpredictable fracture.
- Do not use a wedge as a shim for permanent alignment — it must be removed before the joint is bolted and tightened.
Get Certified Non Sparking Tools from Pahwa MetalTech
Choose non sparking tools that are tested and certified to meet safety and strength requirements for hazardous work environments across oil & gas, chemical, and other industries handling flammable materials.
With tools manufactured in Copper Titanium (QTi) and Aluminium Bronze (BronAL), Pahwa MetalTech offers certified solutions that deliver reliable performance, durability, and compliance for your operations.