The BLD12421 breather valve was designed to meet the need for a low-cost, one-way, pressure relief valve.
Standard settings range from 0.5 psid to 3.0 psid reseal or cracking pressure.
The BLD12421 is tamper-proof and requires no field maintenance. For threaded boss installation: 9/16-32 UNF-3B; no counterbore requirement.
| Materials | Housing & Hex - Aluminum Alloy; Seal & O-Ring - Buna N Rubber; Washer - Acetal |
| Finish | Housing & Hex - Black Anodize |
| Mounting Requirements | Nut, washer & O-Ring, provided with each valve |
| Mounting Hole Diameter | 0.58 ± 0.010 (14.7 ± 0.2 mm) |
| Installation Torque | 20-25 in-lbs. (2.2-2.8 Nm) |
| Maximum Wall Thickness | 0.290 (7 mm) |
| Weight | 0.066 lbs. (30 grams) |
