Designed for higher flow demands, the 687 Series features a maximum Cv of 12.5 with a flow diameter of 0.812". Like other valves in the poppet series, it uses a thin elastomer disc and poppet to maintain a positive seal at very low back pressure or vacuum. This series has a 1/2 psi cracking pressure and is available in black glass-filled polypropylene body, Buna-N seal, and 302 stainless steel spring. A robust choice for fluid and air systems requiring excellent throughput and versatility.
- Polypropylene
- Buna-N seals
- 302 SS spring
- High flow rate
- Seat area open diameter: 0.812"
- Positive seal at very low back pressure or slight vacuum
- Cracking pressure: 1/2 psi
- Check mechanism: Oring poppet
- Maximum pressure: 125 psi
- Maximum temperature: 140°F