American Engineering Trusted Wordwide ®DATA SHEET
670-2
11/15/2025 4:04 PM
| Product Category | 670-2 |
| Product Line | O-SEAL® Check Valves (600 Series) |
| Part Description | 3/8" Globe Check Valve with Welded Ends |

| Port Dia. | 0.44 |
| A | 4.750 |
| B | 2.38 |
| D | 0.440 |
| F (Pipe Size) | 0.690 |
| F (Tube Size) | 0.502 |
| Pressure Rating | 6000 PSI |
| Temperature Range | -15°F to 275°F (-26°C to 135°C) |
| Standard Soft Goods | [-C] Viton® O-Rings |
| Cartridge Type | Check |
| Connection Type | Socketweld |
| Connection Size | 3/8" |
| Body Material | 316/L Stainless Steel, ASTM A276, UNS S31603 |
| Bonnet Material | Nickel Aluminum Bronze, ASTM B150, UNS C63200 |
| Port & Vent Options | [-PA] Port Above Seat (1/8" NPT), [-PB] Port Below Seat (1/8" NPT), '[-VA] Vent Above Seat (3/8"-24 SAE), [-VB] Vent Below Seat (3/8"-24 SAE), |
| Optional Soft Goods | [-B] Polyurethane® Packing and Buna-N O-Rings, [-C] Viton® Packing & O-Rings, [-D] EPDM Packing & O-Rings |