Pressure Switch for Air DL

DL air pressure switches provide accurate, reliable supervision of air pressure for both industrial and commercial combustion systems, boilers, HVAC systems, and a wide variety of other applications.

The DL air pressure switch controls rising and falling pressure ensuring a set limit value.

Features

• For monitoring positive, negative or differential pressures
• Multiple pressure ranges from 0.08 to 20 "WC (0.2 to 50 mbar)
• Accurate, repeatable switching action
• Supplied with one form "C" contact
• Automatic reset
• Sturdy construction
• Compact design
• Integral hose barb connections
• Choice of mounting positions
• Easy to install
• FM and UL approved, models also available with CE certification

	Documentation Manufacturer's Product Brochure Manufacturer's Installation Instructions Manufacturer's Technical Sheet
	Ordering Information Model Adjusting Range Housing and Connections Gold contacts AMP plug connection Electrical connection via screw terminals Price (US List) Order Now DL 3AT 0.12–1.2 “WC (0.3–3 mbar) screw terminals, ¼" NPT, tube connection, hand wheel No No No $60 DL 5AT 0.2–2 "WC (0.5–5 mbar) screw terminals, ¼" NPT, tube connection, hand wheel No No No $57 DL 10AT 0.4–4 "WC (1.0–10 mbar) screw terminals, ¼" NPT, tube connection, hand wheel No No No $57 DL 50AT 1.0–20 "WC (2.5–50 mbar) screw terminals, ¼" NPT, tube connection, hand wheel No No No $59 DL 3ATG 0.12-1.2 “WC (0.3-3 mbar) screw terminals, ¼" NPT, tube connection, hand wheel Yes No No $60 DL 3KT 0.12-1.2 “WC (0.3-3 mbar) tube connection, hand wheel No No No $49 DL 5KT 0.2–2 "WC (0.5–5 mbar) tube connection, hand wheel No No No $49 DL 10KT 0.4–4 "WC (1.0–10 mbar) tube connection, hand wheel No No No $49 DL 50KT 1.0–20 "WC (2.5–50 mbar) tube connection, hand wheel No No No $49 DL 3,5KT-3 0.12–4.4 "WC (0.3–3.5 mbar) tube connection, hand wheel No No Yes $40 DL 4,5KT-3 0.12–2 "WC (0.3–5 mbar) tube connection, hand wheel No No Yes $40 DL 8KT-3 0.2–3.2 "WC (0.5–8 mbar) tube connection, hand wheel No No Yes $40 DL 11KT-3 0.4–4.4 "WC (1.0–11 mbar) tube connection, hand wheel No No Yes $40 DL 16KT-3 1.6–6.4 "WC (4–16 mbar) tube connection, hand wheel No No Yes $40 DL 24KT-3 0.8–9.6 "WC (2–24 mbar) tube connection, hand wheel No No Yes $40 DL 40KT-3 2–16 "WC (5–40 mbar) tube connection, hand wheel No No Yes $40 DL 3,5KTG-3 0.12–4.4 "WC (0.3–3.5 mbar) tube connection, hand wheel Yes No Yes $46 DL 4,5KTG-3 0.12–2 "WC (0.3–5 mbar) tube connection, hand wheel Yes No Yes $46 DL 8KTG-3 0.2–3.2 "WC (0.5–8 mbar) tube connection, hand wheel Yes No Yes $46 DL 11KTG-3 0.4–4.4 "WC (1.0–11 mbar) tube connection, hand wheel Yes No Yes $46 DL 16KTG-3 1.6–6.4 "WC (4–16 mbar) tube connection, hand wheel Yes No Yes $46 DL 24KTG-3 0.8–9.6 "WC (2–24 mbar) tube connection, hand wheel Yes No Yes $46 DL 40KTG-3 2–16 "WC (5–40 mbar) tube connection, hand wheel Yes No Yes $46 DL 3,5KT-1 0.12–4.4 "WC (0.3–3.5 mbar) tube connection, hand wheel No Yes No $38 DL 4,5KT-1 0.12–2 "WC (0.3–5 mbar) tube connection, hand wheel No Yes No $38 DL 8KT-1 0.2–3.2 "WC (0.5–8 mbar) tube connection, hand wheel No Yes No $38 DL 11KT-1 0.4–4.4 "WC (1.0–11 mbar) tube connection, hand wheel No Yes No $38 DL 16KT-1 1.6–6.4 "WC (4–16 mbar) tube connection, hand wheel No Yes No $38 DL 24KT-1 0.8–9.6 "WC (2–24 mbar) tube connection, hand wheel No Yes No $38 DL 40KT-1 2–16 "WC (5–40 mbar) tube connection, hand wheel No Yes No $38 DL 3,5KTG-1 0.12–4.4 "WC (0.3–3.5 mbar) tube connection, hand wheel Yes Yes No $44 DL 4,5KTG-1 0.12–2 "WC (0.3–5 mbar) tube connection, hand wheel Yes Yes No $44 DL 8KTG-1 0.2–3.2 "WC (0.5–8 mbar) tube connection, hand wheel Yes Yes No $44 DL 11KTG-1 0.4–4.4 "WC (1.0–11 mbar) tube connection, hand wheel Yes Yes No $44 DL 16KTG-1 1.6–6.4 "WC (4–16 mbar) tube connection, hand wheel Yes Yes No $44 DL 24KTG-1 0.8–9.6 "WC (2–24 mbar) tube connection, hand wheel Yes Yes No $44 DL 40KTG-1 2–16 "WC (5–40 mbar) tube connection, hand wheel Yes Yes No $44 DL 1ET 0.08–0.4 "WC (0.2–1 mbar) flat plug, tube connection, setscrew No No No $40 DL 3ET 0.12–1.2 "WC (0.3–3 mbar) flat plug, tube connection, setscrew No No No $40 DL 5ET 0.2–2 "WC (0.5–5 mbar) flat plug, tube connection, setscrew No No No $40 DL 10ET 0.4–4 "WC (1.0–10 mbar) flat plug, tube connection, setscrew No No No $40 DL 50ET 1.0–20 "WC (2.5–50 mbar) flat plug, tube connection, setscrew No No No $40 DL 2ET-1 0.12–0.8 "WC (0.2–2 mbar) flat plug, tube connection, setscrew No Yes No $32 DL 4ET-1 0.2–1.6 "WC (0.5–4 mbar) flat plug, tube connection, setscrew No Yes No $32 DL 14ET-1 1.2–5.6 "WC (3–14 mbar) flat plug, tube connection, setscrew No Yes No $32 DL 35ET-1 4.8–14 "WC (12–35 mbar) flat plug, tube connection, setscrew No Yes No $32 DL 2ETG-1 0.12–0.8 "WC (0.2–2 mbar) flat plug, tube connection, setscrew Yes Yes No $38 DL 4ETG-1 0.2–1.6 "WC (0.5–4 mbar) flat plug, tube connection, setscrew Yes Yes No $38 DL 14ETG-1 1.2–5.6 "WC (3–14 mbar) flat plug, tube connection, setscrew Yes Yes No $38 DL 35ETG-1 4.8–14 "WC (12–35 mbar) flat plug, tube connection, setscrew Yes Yes No $38 Accessories Model Description Price (US List) Order Now DG/DL ACC 01 Z-angle bracket DL 3-150A, 3K, 1-3E $6 DG/DL ACC 02 Z-angle bracket DL 5-50E, 5-150K $6 DG/DL ACC 03 Pilot lamp set 110/120 V AC red $9 DG/DL ACC 04 Pilot lamp set 110/120 V AC green $9 DG/DL ACC 05 LED set 24 V DC/AC red/green $9 DG/DL ACC 06 Connecting set DG..U, DG..T $5 DG/DL ACC 07 Tube set with angle connector and extension for DL $19 DG/DL ACC 08 U-angle bracket DG, DL $6
	Applications Click on images for close-up view. DL air pressure switches provide accurate, reliable supervision of air pressure for both industrial and commercial combustion systems, boilers, HVAC systems and a wide variety of other applications. The DL air pressure switch controls rising and falling pressure ensuring a set limit value.
	Specifications General Specifications Ambiant, air and storage temperature: -40 °F to 140 °F (-40 °C to 60 °C) Switching capacity: 30 – 240 Vac, I = 5 A resistive or 0.5 A inductive (cos φ = 0.6), "G" models: use at ≤30 V rate 0.1 A resistive or 0.05 A inductive (cos φ = 0.6). Short circuit protection: Use 8 A quick-acting fuse Material of Construction: All Kromschroder diaphragm actuated pressure switches are constructed of special high quality molded plastic. Diaphragms are nitrile rubber. The DL..ET enclosure is rated for IP10/NEMA 1 general purpose. The DL..AT switches have an NEMA 3/IP54 rating. Electrical Connections: "E" Models: ¼" (6.3 mm) spade-type wiring terminals. "A" Models: Screw terminals for 18 – 14 AWG wire, ½" NPT conduit connector. Pressure Connections: "E" Models: Hose barb for 5/32" (4.3 mm) ID tubing. "A" Models: Hose barb for 5/32" (4.3 mm) ID tubing. Additional ¼" NPT female connection for high pressure side of switch. Pressure Ranges: Type Adjusting Range Hysteresis "WC mbar "WC mbar DL 3AT 0.12 – 1.2 0.3 – 3.0 0.06 – 0.12 0.15 – 0.30 DL 1ET 0.08 – 0.4 0.2 – 1.0 0.04 – 0.06 0.10 – 0.15 DL 3ET 0.12 – 1.2 0.3 – 3.0 0.06 – 0.12 0.15 – 0.30 DL 5ET 0.2 – 2.0 0.5 – 5.0 0.10 – 0.14 0.25 – 0.35 DL 10ET 0.4 – 4.0 1.0 – 10.0 ≤ 0.16 ≤ 0.40 DL 50ET 1.0 – 20.0 2.5 – 50.0 ≤ 0.48 ≤ 1.20

Pressure Switch for Air DL 1-50 ET