983 Gallon 715 PSI Gas Pulse Trap – PULSCO | 42" Diameter | 12'-6" T/T Length | ASME

Is this ASME or DOT rated, and what does that allow me to do with it?

This unit is ASME-certified (tag V-1340A, certified by Pennington Manufacturing in 1987). ASME certification qualifies it for stationary installation in process systems, industrial gas distribution, and facility-based applications where DOT portable vessel certification is not required. It cannot be transported as a DOT cylinder.

What is the MAWP and capacity at service pressure?

The maximum allowable working pressure (MAWP) is 715 PSI with a design temperature of 100°F, and the vessel holds 983 gallons. The listing does not specify derated capacity at lower pressures; for applications below design pressure, confirm your required volume with the seller based on your operating setpoint and gas composition.

What is the requalification or inspection status?

The listing does not state current inspection or requalification status. ASME vessels in gas service typically require periodic inspection per NBIC or API 510 depending on jurisdiction and application; confirm the date of last internal/external inspection and any required recertification before putting the unit into service.

What should I inspect before putting it into service?

Verify shell and head condition for corrosion, pitting, or deformation, particularly at welds and penetrations. Inspect all nozzles, flanges, and gasket surfaces; check for previous repairs or alterations that may affect the ASME certification. Pressure test per applicable code and confirm the nameplate and stamping are legible and match certification records, as degraded markings can complicate jurisdictional approval.