The Swagelok 316 QC4 is a quick-connect fitting engineered for reliable, tool-free connection and disconnection of fluid lines in industrial and laboratory systems. Constructed from 316 stainless steel with fluorocarbon FKM o-rings, it delivers corrosion resistance and durability across demanding applications. The push-to-connect mechanism enables frequent line changes while minimizing air inclusion and spillage. Available in single-end shutoff (SESO), double-end shutoff (DESO), and full-flow configurations, the QC4 accommodates 1/8 in. and 1/4 in. connection sizes with multiple end types including Swagelok tube fittings, NPT threads, and 4PM connections.
Technical Specifications
Pressure Ratings
• Coupled at room temperature (70 °F): 3000 psig (206 bar)
• Uncoupled at room temperature (70 °F): 250 psig (17.2 bar)
• Coupling/uncoupling (70 °F): 250 psig (17.2 bar)
• Coupled at maximum temperature (400 °F): 250 psig (17.2 bar at 204 °C)
Flow Characteristics (Maximum Cv)
• Standard or reverse flow body: 0.2
• Standard or reverse flow body (stem without valve): 0.3
• Full-flow body (stem without valve): 0.4
• Standard or reverse flow body (1/8 in. stem with valve): 0.08
• Cv variation: ±10%
Materials & Processing
• Body: 316 stainless steel
• O-ring: Fluorocarbon FKM (standard)
• Lubricant: Dow Corning 111 (standard)
• Cleaning: SC-10 standard; SC-11 (special cleaning) available
– Key Features
• Push-to-connect operation—no tools required
• Interchangeable stems and bodies within QC4 series
• Multiple sleeve options including keyed variants
• Shutoff valve configurations minimize fluid loss
• FKM sealing rated to 400 °F
– Typical Applications
Systems requiring frequent connections, maintenance cycles, or precise fluid handling with controlled spillage and minimal air entrainment.
– Compatibility & Integration
Available end connections: Swagelok tube fittings, male NPT, female NPT, and 4PM (1/4 in.). All QC4 stems fit any QC4 body of matching series and size.
