Pressure Relief Valves for ASME Containers and Bulk Plant Installations
AA3126, AA3130, 3131, 3132, 3133, 3135, AA3135, and A3149 Series
Designed for use as a primary relief valve on ASME above ground and underground containers, bulk plant installations and skid tanks. The 3131 Series may also be used as a primary or secondary relief valve on DOT cylinders, or as a hydrostatic relief valve. All working components of these relief valves are outside the container connection, so the valves must be protected from physical damage.
Unit of Measure
Specifications
Size |
N/A 3/4 in |
Capacity |
N/A 250 lb |
Material |
N/A Brass |
Start To Discharge Setting |
N/A 250 psig |
Approximate Overall Height (B) |
N/A 3 7/16 in |
Section Hexagonal Wrench (C) |
N/A 1-3/4 in |
Tank Capacity |
N/A 85 ft² |
Rating |
N/A Department of Telecommunication (DOT) American Society of Mechanical Engineers (ASME) Underwriters Laboratories (UL®) Listed |
Alternate Part Number |
N/A 3131G |
Connection
Container Connection Size (A) |
N/A 3/4 in |
Container Connection Type (A) |
N/A Male National Pipe Thread (MNPT) |
Flow Capacity
Underwriter Laboratories (UL®) Rated Flow Capacity Per Air at 120 Percent (%) of Set Pressure |
N/A 2060 scfm |
ASME Rated Flow Capacity Per Air at 120 Percent (%) of Set Pressure |
N/A 1939 scfm |
Note
Note for Air Flow Capacity |
N/A
Flow rates shown are for bare relief valves. Adapters and pipe-aways will reduce flow as discussed in the Foreword section. |
