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For more than 80 years, Mercoid (a division of Dwyer Instruments) has been manufacturing high-quality temperature, pressure & level controls for the HVAC, petrochemical, wastewater and electrical industries. Read More


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Differential Pressure Gauge Accessories

Angle Braket For 3100d/3200g
Item: AA4RFQ
Model: A-630
€197.62 /unit
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Flat Braket, 316 SS For 3100D/3200G
Item: AA4RFR
Model: A-631
€213.30 /unit
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Digital Pressure Vacuum Gauges with Transmitters

Submersible Level Transmitters

About Mercoid

The company's catalogue includes submersible level transmitters, digital pressure vacuum gauges and pressure & vacuum switches. Mercoid pressure switches are used for actuating one or two SPDT snap switches in response to decreasing / increasing the pressure of compatible liquids or gases. These switches feature a rolling diaphragm design for maintaining an effective area to reduce friction, thereby delivering the deadband as low as 5% of full-scale. Both deadband and setpoint adjustments of these switches are fully isolated from the electrical components for added safety and are capable of withstanding pressures up to 500 psi.

Things To Consider

Cross-Reference Alternatives

Some Mercoid MPNs cross individual references to the equivalent Ashcroft model numbers. So, if you're looking for competitor items that are either out of stock or obsolete, chances are Raptor Supplies has the equivalent Mercoid products available.

Why Us?

Raptor Supplies, a trusted Mercoid distributor, offers its complete range of products. We can recommend suitable products for diverse application requirements.


These Mercoid products range from small to large sizes. They may require careful packaging as some items might get damaged while shipping. Hence, these Mercoid items are delivered by courier shipment and air freight for minimum downtime.

Major Trade Names

Capsuhelic Differential Pressure Gauges

These pressure gauges are designed to give an instant and accurate indication of differential pressures, and are used as a readout device while measuring flowing fluids, liquid levels in storage tanks...Read more 

FLOTECT V4 Series Vane Operated Flow Switches

These FLOTECT flow switches operate automatically for protecting pipeline systems and equipment from damage due to reduction or loss of flow. They feature a magnetically actuated switching design with...Read more 

Mercoid Competitive Advantages

Mercoid DA Series Pressure Switches

These highly sensitive pressure switches are used to turn ON the main pumps when system pressure falls due to activation of sprinkler heads and smaller make-up pumps for maintaining system pressure. They provide independent low & high setpoints over the entire pressure range for maintaining the minimum pressure needed for proper system operation and to prevent damage due to the over-pressurization of the system. These switches feature a screw terminal connection for added safety and allow vertical mounting for easy installation. They are CE, CSA, FM & UL approved and can be operated at temperatures up to 180 degrees F.

Frequently Asked Questions

What is the difference between a flow switch and a pressure switch?

One visible difference between pressure switches and paddle flow switches is the lack of a paddle. Pressure switches have no parts that reach the open pipe.

What are submersible level transmitters?

Submersible level transmitters are pressure transmitters used for measuring hydro-static pressure from inside the fluid.