Aqua Environment 1372-5000 1372 Series High Accuracy/Pilot Operated Reducing Regulator 1/4" NPT 300-5000 PSI Outlet

The model 1372 high accuracy regulator is similar in appearance and function to standard 415 reducing regulator. However it controls outlet pressure more precisely. This is done by using a small pilot piston to control gas flow to a dome load area that operates a much larger sensing piston. One difference from the 415 regulator is that outlet pressure can not be adjusted to zero. A bias spring, necessary for operation, maintains a 200 PSI outlet pressure even when the adjusting knob is fully backed off. The regulator seat, poppet assembly, and filter are contained in an easily replaced valve cartridge. This low cost cartridge permits very easy and fast in-field servicing. The regulator is self venting. It can be provided unvented on special order. An optional mounting bracket (part number 657) permits panel mounting in any orientation or extension from the panel surface.

Features:

• High Accuracy/Pilot Operated
• Reducing Regulator
• Hand/Spring Loaded
• 1/4 in. NPT fittings
• 300 to 5000 psi outlet

Installation

Use a suitable pipe thread sealant such as Teflon tape on inlet and outlet threads. Avoid over torquing pipe thread. Normal torque applied with a 6 or 8 inch long wrench is ample. Use ample Teflon tape - 3 or 4 turns, not 1 or 2 turns. The inlet is on the left when facing the adjusting knob with the two gage ports upward. The ring clamps to the cap portion of the regulator at any desired location and orientation. The ring has two threaded holes parallel to the regulator spaced 2.8" apart. The regulator is NOT shipped oxygen clean and should NOT be used for oxygen service as provided. AS WITH ANY REGULATOR, A RELIEF VALVE SET SLIGHTLY ABOVE THE MAXIMUM DESIRED CONTROL PRESSURE SHOULD BE INSTALLED ON THE OUTLET SIDE.

Maintenance and repair caution

As with any regulator or valve, particulates or moisture can plug or freeze the internal filter or valve seat. This can occur when upstream dryers are not changed or remain unused for long periods allowing corrosion materials to accumulate. In critical applications where it is important not to lose flow, a larger particulate filter should be used upstream.

For more information, please see Data Sheet