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The BuTech 20SC6 is a rugged O-ring check valve engineered to prevent backflow in high-pressure fluid and gas systems. Crafted from cold-worked 316 stainless steel and rated to 20 000 psi (1 380 bar), it delivers both reliability and durability. Featuring a 3/8" Male Pipe (MP) tube-to-tube connection, it incorporates a Buna-N O-ring for leak-tight sealing. Also available with Viton, PTFE, or Kalrez O-rings for enhanced chemical resistance or extended temperature performance. Compact and precision-machined, it s ideal for critical applications in hydraulic, pneumatic, gas, and hydrogen service.
- 20 000 psi (1 380 bar) medium-pressure rating with O-ring sealing
- 3/8" MP tube tube connections in rugged stainless steel body
- Leak-tight O-ring seal (standard Buna-N; options: Viton, PTFE, Kalrez)
- Compact, precision-machined stainless steel construction for demanding environments
- Wide temperature compatibility depending on O-ring: 65 F to +550 F ( 54 C to +288 C)
| Part Number | 20SC6 |
| Type | O-Ring Check Valve |
| Connections | 3/8" Male Pipe (MP) tube tube |
| Pressure Rating | 20,000 psi (1,380 bar) |
| Material | 316 cold-worked stainless steel |
| O-Ring Options | Buna-N (standard), Viton, PTFE, Kalrez |
| Temperature Range | Dependent on seal material ( 65 F to +550 F / 54 C to +288 C) |
| Cracking Pressure | ~15 psi standard (configurable to 100 psi) |
| Length (A) | 3.12" (79.2 mm) |
| Height (B) | 2.62" (66.5 mm) |
| Hex Across Flats | 1.12" (28.4 mm) |