Xi'an Kacise Optronics Co.,Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 1000 Piece/Pieces per Week negotiable |
| Delivery Time | 5-8 work days |
| Packaging Details | each unit has individual box and all boxes are packed in standard packages or customers requests available |
| Pressure Limits | 10 Psig (68.95 KPa) Continuous, 25 Psig (172.4 KPa) Surge |
| Repeatability | ±1% |
| Service | Air And Non-combustible, Compatible Gases |
| Temperature Limits | -30 To 110°F |
| Process Connections | 1/8" Female NPT |
| Mounting Orientation | Diaphragm In Vertical Position |
| Brand Name | Dwyer |
| Model Number | 1638-0,1638-1,1638-10,1638-2,1638-5 |
| Certification | ce |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 1000 Piece/Pieces per Week negotiable |
| Delivery Time | 5-8 work days | Packaging Details | each unit has individual box and all boxes are packed in standard packages or customers requests available |
| Pressure Limits | 10 Psig (68.95 KPa) Continuous, 25 Psig (172.4 KPa) Surge | Repeatability | ±1% |
| Service | Air And Non-combustible, Compatible Gases | Temperature Limits | -30 To 110°F |
| Process Connections | 1/8" Female NPT | Mounting Orientation | Diaphragm In Vertical Position |
| Brand Name | Dwyer | Model Number | 1638-0,1638-1,1638-10,1638-2,1638-5 |
| Certification | ce | ||
| High Light | 1638-0 Dwyer Pressure Switches ，1638-5 Dwyer Pressure Switches ，1638-2 Dwyer Pressure Switches | ||
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
| Parameter | Value |
| Model Range | 1638-0, 1638-1, 1638-2, 1638-5, 1638-10 (pressure spans vary by model) |
| Pressure Range | E.g., 1638-0: 0–1 psi; 1638-5: 0–10 psi (check model specifics) |
| Current Load | Up to 15 amps @ 125 VAC/28 VDC |
| Switch Type | SPDT (Single Pole, Double Throw) for normally open/closed configurations |
| Wetted Materials | Corrosion-resistant components for compatibility with air and non-corrosive gases |
| Mounting | Panel or surface mounting options |
Company Details
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
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... 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...
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