RP38 38" Rapid Purge System

Pipe Purge Masters RP38 38" Rapid Purge System is an advanced inflatable purging solution for fast weld purging in pipes up to 38" diameter. It uses a tandem dam system with an umbilical hose containing separate gas and exhaust lines, plus a red strip indicator for centering, to achieve low oxygen levels quickly (typically less than 10 minutes to below 0.1% oxygen), saving time, gas, and money. Ideal for stainless steel, duplex, chrome steels, titanium, nickel, and exotic alloys, it prevents oxidation and discoloration for high-quality welds in fabrication shops, construction sites, and maintenance operations.

• Model Number: RP38
• Product Type: Inflatable Tandem Dam Rapid Purge System
• Color: Red (dams), black (umbilical hose)
• Material: High-strength rubber inflatable dams; nylon braided armored umbilical hose with heat-resistant covering (up to 250°C) and friction-free coatings
• Nominal Pipe Size: 38" / 950 mm
• Internal Diameter Range (I/D): 36.61" - 37.99" / 930 - 965 mm
• Inflation Pressure: 0.3 bar / 4.3 psi (recommended for sealing without damage)
• Purge Time: Less than 10 minutes to below 0.1% oxygen (typically 8 minutes for 38" pipes)
• Weight (Net): 21 lbs / 9.50 kg
• Overview: Tandem dam system for rapid weld purging; creates a sealed chamber via umbilical hose; ideal for stainless steel, duplex, and exotic alloys in fabrication shops, construction sites, and maintenance operations
• Key Features:
  • Rapid purging: Achieves low oxygen levels in minutes; red luminous strip on umbilical hose for easy centering in low-light conditions
  • Secure sealing: Inflatable dams create a contained chamber for inert gas; armored hose prevents damage during insertion; gas exhaust valve between primary and secondary dam
  • Versatility: Suitable for straight pipes; optional extensions for longer reaches; compatible with argon or other inert gases at flow rates up to 80 l/min; auxiliary argon purge line
  • Durability: High-strength materials resist wear and pressure; reusable with proper maintenance; thru-bore design minimizes purge volume
  • Safety: Low inflation pressure minimizes rupture risk; includes pressure relief valve; fittings: International = 21 KA series male connector; Americas = ¼" NPT male connector
  • Eco-Friendly: Reduces gas consumption for sustainable operations
• Packaging: 1 System per Unit; Includes two inflatable dams, armored umbilical hose with luminous strip, inflation hose connectors, and user manual; Compact storage bag for portability
• Storage: Cool, dry place away from direct sunlight and extreme temperatures; shelf life up to 5 years under proper conditions
• Compliance: Meets industry standards for weld purging systems (e.g., ASME equivalents for safe gas handling)