High quality U.S. manufactured valves designed to meet many options encountered in the oil and gas industry.
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Mallard Gauge Valve 3510
Mallard Gauge Valve 3500
Mallard Gauge Valve 3510

Model 3500-3510 Gauge Valve

The Model 3500 (rigid-union) and Model 3510 (union-union) gauge valves are recommended for use with model 3520 glass liquid level gauges and are compatible with all armored flat-glass liquid level gauges. Consistent with Mallard’s reputation, the model 3500 is designed and built to the highest standards.


SKU: MC-LI-3500-3510 Categories: ,


  • Gauge Connections: 1/2″ or 3/4″ FNPT, rigid or union
  • Vessel connection: 1/2″ or 3/4″ MNPT, union only
  • Seating Service: Integral to valve body
  • Maximum operating pressure: 4000 psi


  • Safety shutoff: Equipped with a stainless steel ball check located upstream of the seat
  • Offset pattern: Gauge and drain connections are oset 0.75" from the vessel connection centerline
  • Materials of construction which comply with NACE MR0175 specifications are available on request.

NOTE: Taylor Valve reserves the right to change product designs and specifications without notice.

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