
1635-1-MIL Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $81.60 | Condition is New – Open box, DWYER DIFFERENTIAL PRESSURE SWITCH 1635-1-MIL , FREE SHIPPING | 99.8% |
![]() | $97.00 | Condition is New – Open box, NEW DWYER DIFFERENTIAL PRESSURE SWITCH 1635-1-MIL 548783 T44P-S11662601 .20-1.0, shipping cost = $21.32 | 99.9% |
![]() | $478.48 | Top Pick! Condition is New – Open box, Dwyer Series 1630 Large Diaphragm Pressure Switch 1635-1-MIL, shipping cost = $24.35 | 99.8% |

The Dwyer Model 1635-1-Mil Differential Pressure Switch is a versatile and reliable instrument designed to provide accurate and consistent pressure differential measurements in various industrial applications. This switch is part of Dwyer's line of process control instruments, offering a high level of precision and durability.
The 1635-1-Mil switch is designed to detect the pressure difference between two points in a system. It features a 1-millimeter (0.039-inch) differential pressure setting, making it suitable for applications where small pressure differences need to be monitored. The switch is equipped with a stainless steel diaphragm, which ensures long-lasting performance in harsh environments.
The 1635-1-Mil switch is available in two versions: normally open (NO) and normally closed (NC). The NO version opens the contact when the set pressure differential is reached, while the NC version closes the contact. The switch can be easily configured for either setting by adjusting the spring tension.
The switch is housed in a rugged, corrosion-resistant plastic enclosure, making it suitable for use in a wide range of industrial applications. It is also UL and CSA recognized, ensuring compliance with stringent safety standards. The switch has a operating temperature range of -20 F to 185 F (-29 C to 85 C), making it suitable for use in a variety of temperature conditions.
The 1635-1-Mil Differential Pressure Switch comes with a clear and easy-to-read pressure scale, which allows for quick and accurate calibration. It also features a built-in test button, which allows users to verify the switch's operation at any time. The switch has a low power consumption, making it an energy-efficient solution for monitoring pressure differences.
The Dwyer Model 1635-1-Mil Differential Pressure Switch is an essential instrument for any industrial process control system, offering precise and reliable pressure differential measurement in a rugged and durable design. With its versatile features, easy-to-use design, and compliance with stringent safety standards, this switch is an excellent choice for a wide range of applications.
Dwyer 1635-1-Mil 1630 Differential Pressure Switch: A Comprehensive Analysis
Introduction:The Dwyer 1635-1-Mil 1630 differential pressure switch is a widely used instrument in various industrial applications to monitor and control pressure differences. Let's examine the pros and cons of investing in this device.
Pros:1. High Accuracy: The Dwyer 1635-1-Mil 1630 switch offers high accuracy, ensuring reliable and precise pressure measurement.
2. Versatility: This switch can be used in various industries, such as HVAC, water treatment, and food processing, to name a few.
3. Rugged Construction: The device is designed to withstand harsh environments, making it suitable for industrial applications.
4. Easy Installation: The switch comes with a clear and easy-to-follow instruction manual, making installation a straightforward process.
5. Wide Operating Range: The switch can handle a wide range of pressure differences, making it suitable for various applications.
Cons:1. Cost: The Dwyer 1635-1-Mil 1630 switch may be more expensive than some other differential pressure switches in the market.
2. Limited Connectivity Options: The switch only comes with a few connection options, which may limit its compatibility with certain systems.
3. Calibration: Periodic calibration is required to ensure the accuracy of the switch, which may incur additional costs.
Conclusion:The Dwyer 1635-1-Mil 1630 differential pressure switch offers high accuracy, versatility, rugged construction, easy installation, and a wide operating range. However, it may be more expensive than some other switches, and it has limited connectivity options and requires periodic calibration.
Recommendation:If the high accuracy, rugged construction, and wide operating range are essential features for your application, and you're willing to invest in a reliable and versatile differential pressure switch, then the Dwyer 1635-1-Mil 1630 switch is an excellent choice. However, if cost is a significant concern, or you require more connectivity options, you may want to consider other alternatives in the market.
Details:
This specific item is furnished with special snap switch and silicone rubber diaphragm for high humidity and/or government application. Model 1635-1-MIL 0.2-1.0 inches WC, 0.04-0.06 headband. Item was kept in a climate-controlled environment. See cut sheet for more details.
Dwyer 1630 series differential pressure switch. Dwyer catalog 1635-1-MIL new in-the-box, never opened.
specifications indusswitch:
- brand: Dwyer
- mpn: 1635-1-mil
- type: Differential Switch
- item length: 21 In
- application: Industrial, Instruments
shipping indusswitch:
- class: expedited
- service: usps priority mail
- type: calculated
- carrier: usps
- transit: 5-11 days
returns indusswitch:
- policy: no returns
payments indusswitch:
- wallet: paypal
- other
- credit card: diners-club
seller indusswitch:
- rating: 0.0%
- # reviews: 13
- city: bellingham, washington
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pressure Switches
offer indusswitch:
- options: ship-to-home
- sold #: 23
- started: march 21, 2025
- in stock #: 3
- availability: in stock
- prices: $81.60–$478.48
- item condition: New – Open box
Also Purchased:
- DA-7031-153-9: PRESSURE SWITCH, Dwyer Instruments
- A-465: PRESSURE, Dwyer
- 1626-5: PRESSURE SWITCH, Dwyer
- 1638-1: PRESSURE SWITCH, Dwyer
- 1824-1-1-S: PRESSURE SWITCH ENCLOSURE, Dwyer
- DA-7038-153-4: CONTROL SWITCH, Dwyer Mercoid
- AP-153-37: PRESSURE CONTROL SWITCH, Dwyer
- 1823-00: PRESSURE SWITCH, Dwyer
- DA-31-2-9: PRESSURE SWITCH, Dwyer Instruments Mercoid
- 1950-00-2F: PRESSURE SWITCH, Dwyer
- 1820-1-M: AIR PRESSURE SWITCH, Dwyer


