Dwyer Pressure Switches (Models 1638-0, 1638-1, 1638-10, 1638-2, 1638-5)

Dwyer Pressure Switches (Models 1638-0, 1638-1, 1638-10, 1638-2, 1638-5)

Product Introduction

The Dwyer Pressure Switches (Series 1638) are reliable, precision instruments designed for pressure-based control in HVAC and industrial processes. With models covering a range of pressure spans (e.g., 0–1 psi to 0–10 psi), these switches feature a visible set-point indicator for easy operation and troubleshooting. The large diaphragm design ensures accuracy in low-pressure ranges, enabling precise control of pumps, fans, and valves. Capable of handling current loads up to 15 amps, they directly support small electrical loads without additional relays, simplifying system design and reducing installation costs.

Product Features

Visible Set-Point Indicator:

Front-facing indicator allows quick visual confirmation of pressure set points.

Simplifies on-site adjustments and troubleshooting without specialized tools.

Large Diaphragm Design:

Enhances sensitivity and accuracy in low-pressure applications (e.g., 0–1 psi range).

Enables precise pressure threshold detection for reliable system control.

High Current Load Capacity:

Supports up to 15 amps, suitable for direct connection to small motors, solenoids, and alarms.

Eliminates the need for intermediate relays, reducing component costs and system complexity.

Versatile Pressure Ranges:

Models cover different pressure spans:

1638-0: 0–1 psi

1638-1: 0–2 psi

1638-2: 0–5 psi

1638-5: 0–10 psi

1638-10: (consult datasheet for specific range)

Rugged Construction:

Durable housing suitable for indoor HVAC and general industrial environments.

Reliable performance in typical operating temperatures and humidity ranges.

Technical Specifications

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.