Mallard Control

Gauges

Model 3520 / 3540 The Mallard Glass Liquid Level Gauge is a rugged flat glass gauge for medium-pressure (Model 3520) and high-pressure (Model 3540) applications. Standard construction includes a solid one-piece chamber machined from bar, forged steel covers, alloy steel bolts and nuts, and tempered glass. Available in a variety of materials to meet specific corrosion conditions. Brochure (PDF) Install., Oper. and Maint. Instructions (PDF)
Model 3500 / 3510 The Model 3500 (rigid-union) and Model 3510 (union-union) Gauge Valves are recommended for use with Mallard Model 3520 / 3540 Glass Liquid Level Gauges and are compatible with all armored flat-glass liquid level gauges. Consistent with Mallard's reputation, the gauge valve is designed and built to the highest standards. Brochure (PDF) Install., Oper. and Maint. Instructions (PDF)
Model 1500 Model 1500 Pressure Gauges are specifically designed for rugged applications and harsh conditions. The gauges provide long and reliable service, especially where pulsation and vibration are present. All Mallard pressure gauges are liquid-filled, which provides a significant cushioning and dampening effect. A vent plug is standard on all gauges and allows for pressure relief after installation. The Model 1500 has a 304 SST case and is available with brass or 316 SST internals. Pressure ranges are available up to 10,000 psig. Brochure (PDF)