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    Series 1630 Large Diaphragm Pressure Switches

    Large Diaphragm Differential Pressure Switches
    Visual Set Point Adjustment in 5 Standard Ranges, 0.05" to 12" w.c. Repetitive Accuracy within ±1%

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    Series 1630 Large Diaphragm Pressure Switches

    Visual Set Point Adjustment in 5 Standard Ranges, 0.05" to 12" w.c. Repetitive Accuracy within ±1%

    On the SERIES 1630 our highest precision conventional large diaphragm pressure switch provides maximum dependability. In addition, it incorporates a visible set point indicator for maximum convenience. UL and CSA listed, FM approved for general service. Electrical capability of 15 amps handles most small electrical loads. For use only with air or compatible gases.

    CAUTION: FOR USE ONLY WITH AIR OR COMPATIBLE GASES.

    Product Applications

    • Damper positioning
    • Duct air control
    • Air conditioning
    • Industrial service
    More Information
    Model Chart
    EXAMPLE 1635 0 AT Series 1635-0-AT Large Diaphragm Pressure Switch, range 0.05-0.25" w.c., with aluminum tag.
    SERIES 1635
    1638
    1639    		     Large Diaphragm Pressure Switch
    Large Diaphragm Pressure Switch with Conduit
    Large Diaphragm Pressure Switch without Conduit
    RANGE   0
    1
    2
    5
    10    		   0.05 - 0.25" w.c.
    0.20-1.0" w.c.
    1.0-3.0" w.c.
    2.0-6.0" w.c.
    3.0-12.0" w.c.
    OPTIONS     AT
    B
    BGAP
    GOLD
    HT
    LC
    MIL
    PRESET
    SF
    ST
    WP    		 Aluminum Tag
    Buna-N Elastomers
    B-Gap Micro Switch
    Gold Contact Switch
    High Temperature
    Less Conduit
    MIL Switch
    Preset
    Silicone Free (includes Buna-N elastomers)
    Stainless Steel Tag
    Weatherproof Housing
    Options
    • -MIL Environmental Construction. Unlisted Model 1635 can be furnished with a special snap switch sealed against the environment for high humidity, exposure to fungus, and/or for military applications. Similar to Model 1638 except dead band is slightly greater and some lower set points may not be available. Specify Model 1638-(range no.)-MIL and required set point in ordering.
    • -WP Weatherproof Housing. 16 ga. steel enclosure for unusually wet or oily conditions. Withstands 200 hour salt spray test. Gasketed cover. Weight: 20 lbs. Switch must be installed at factory. Specify Model 1639-(range no.)-WP when ordering.
    Service: Air and non-combustible, compatible gases.
    Wetted Materials: Consult factory.
    Temperature Limits: -30 to 110°F (-34.4 to 43.3°C).
    Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.
    Switch Type: SPDT.
    Repeatability: ±1%.
    Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz.
    Electrical Connections: 3 screw type, common, normally open and normally closed.
    Process Connections: 1/8" female NPT.
    Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
    Set Point Adjustment: Screw type with enclosed scale.
    Weight: 4 lb 14 oz (2.21 kg).
    Agency Approvals: CSA, FM, UL.
    • Visible set point indicator simplifies operation and trouble shooting
    • Large diaphragm provides low range accuracy providing precise control
    • Current loads of up to 15 amps supports most small electrical loads supporting a broader range of HVAC and Process applications without the need for additional relays and components