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502 Series Straight Purge

Straight purge for high purity gas applications
5021005-01-001 shown

The 502 Series Straight Purge is designed for use with high purity gases to ensure system integrity during gas source changes or the breakdown of components. The straight purge is connected directly to a regulator equipped with an auxiliary high pressure port to remove unwanted gases and water vapor contamination from the system. The purge gas is vented through the regulator body to a safe location downstream. Purging provides safety by allowing the user to start with and maintain a high purity gas stream, prevents the release of dangerous gases into the workplace area, prevents the mixing of reactive gases, and avoids wasting valuable system gases that might have originally been used for purging. The CONCOA 502 Series straight purge is designed to maximize effectiveness, safety, and efficiency while minimizing wastage. It is best suited to pressure cycle or dilution purging.

  • Metal-to-metal diaphragm seal prevents gas contamination
  • Integral check valve avoids internal contamination from backflow
  • Max pressure: 3000 PSIG (210 BAR)
  • Control valve seat: PCTFE
  • Diaphragm: Elgiloy®
  • Check valve seat: FKM (brass and stainless steel)
  • Inlet connection: 1/4 in FNPT
  • Outlet connection: 1/4 in MNPT
  • Weight: 2.5 lbs (1.2 kg) brass; 1.2 lbs (.54 kg) stainless steel
  • Conformances: Cleanliness meets or exceeds CGA G-4.1; CRN OH15806.5
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Part NumberDescription
5021002-01-001Brass Straight Purge
5021005-01-001316L Stainless Steel Straight Purge
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ID Number
502 Series Straight Purges Catalog Page
Purges Installation and Operation Instructions
CRN File OH15806

WARNING: This product can expose you to chemicals including Lead, Chromium, Nickel, and 1-3 Butadiene, which are known to the state of California to cause cancer, birth defects, or other reproductive harm. And, this product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause female reproductive harm. For more information go to www.

Elgiloy® is a registered Trademark of Elgiloy Specialty Metals.