McMaster-Carr logo
    Filter by
    Pressure Numeric Increments
    Pipe Size
    Industrial Info Snippet
    Display Type
    Connection Location
    Accuracy Grade
    Measures
    Dial Diameter
    Outlet Pressure
    Thread Type
    Minimum Pressure
    Dial Type
    Scale Type
    Fitting Connection
    Connects To
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    2 Products
    About Pressure Gauges
    industrial info icon

    Find a gauge with the right connection material and dial type—many with traceable calibration certificates.

    High-Accuracy Low-Pressure Gauges

    Measure small pressure changes in ventilation systems, hydraulic applications, and other critical processes with these high-accuracy gauges. Mount them with the dial face upright.
    Polyester Plastic Case with Brass Connection—Dual Scale (Pounds per Square Inch, Inches of Mercury)
    Image of Product. Front orientation. Pressure Gauges. High-Accuracy Low-Pressure Gauges, Dual Scale, Bottom Connection (Flange Mount).
    Image of Attribute. Bottom Connection (Flange Mount). Front orientation. High-Accuracy Low-Pressure Gauges, Bottom Connection (Flange Mount).

    Bottom Connection

    (Flange Mount)

    Bottom Connection (Flange

    Mount)

    Gauges with 304 stainless steel case or polyester plastic case have better corrosion resistance than gauges with painted steel case.
    Safety Case—Gauges with safety case blow out in the back under excess pressure, protecting the operator in front.
    Bottom Connection (Flange Mount)
    Temp.
    Range, ° F
    Mounting
    Dial
    Dia.
    Pipe
    Size
    Case
    Color
    Environment
    Process
    Features
    For Use With
    Accuracy
    Pressure Range
    Fasteners
    Included
    Hole
    Dia.
    No. of
    Holes
    Each
    Upright Mount
     
    NPT Male
    4 1/2"1/4
    		Black0 to 140-40 to 210Safety CaseAir
    Argon
    Natural Gas
    Nitrogen    		±1% Midscale (Grade A)0 to 8 psi/0 to 16 in. HgNo1/4"34221K30000000
     

    Low-Pressure-Regulating Valves for Water

    Image of Product. Front orientation. Pressure-Regulating Valves. Low-Pressure-Regulating Valves for Water.
    Designed for excellent performance at low pressures, these valves respond to even the slightest inlet pressure changes to maintain a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.
    Inlet
    Outlet
    Pipe
    Size
    Location
    Max. Pressure,
    psi
    Pipe
    Size
    Location
    Pressure Adjustment
    Method
    End-to-End
    Lg.
    For Use
    With
    Temp. Range,
    ° F
    Outlet Pressure,
    psi
    Each
    NPT Female
     
    Brass Body—Buna-N-Coated Nylon Diaphragm and 303 Stainless Steel Seal with Internal Strainer
    1/4
    		Side3001/4
    		SideT-Handle4 1/4"Water0 to 1200 to 83878T410000000
     
    back to top