Dwyer Pressure Switch: Adj, 1 in wc to 3 in wc, Conduit Box, SPDT
The Dwyer 1638-2 is an adjustable set-point air pressure switch with a 1 in wc to 3 in wc range, featuring a SPDT switch rated at 250V AC. It includes a conduit box and a 1/8 in NPT sample line connection.
SKU 3G-OTH-69168
Also listed as: 16382 · 1638 2
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The Dwyer 1638-2 is an adjustable set-point air pressure switch with a 1 in wc to 3 in wc range, featuring a SPDT switch rated at 250V AC. It includes a conduit box and a 1/8 in NPT sample line connection.
Frequently Asked Questions
What is the Dwyer 1638-2 pressure switch used for?
The Dwyer 1638-2 adjustable set-point air pressure switch is used to monitor or control air pressure in HVAC, ventilation, and industrial process systems. It actuates an SPDT switch when pressure reaches the set point between 1 in wc and 3 in wc, enabling alarms or equipment control.
What are the specifications of the Dwyer 1638-2 pressure switch?
The Dwyer 1638-2 has an adjustable set-point range of 1 in wc to 3 in wc, a SPDT switch rated at 250V AC, a 1/8 in NPT sample line connection, and includes a conduit box. It is manufactured by Dwyer with part number 1638-2.
Where to buy the Dwyer 1638-2 pressure switch worldwide?
3G Electric supplies the Dwyer 1638-2 pressure switch worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this adjustable set-point air pressure switch.
How to install the Dwyer 1638-2 adjustable pressure switch?
Mount the Dwyer 1638-2 securely using the conduit box, connect the 1/8 in NPT sample line to the pressure source, and wire the SPDT switch per your control circuit (250V AC max). Adjust the set-point screw to the desired pressure between 1 in wc and 3 in wc. Verify operation with a manometer.
Used in
Common applications for DwyerDwyer Products
3G Electric supplies Dwyer adjustable set-point air pressure switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
