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LF530C-075 Watts Calibrated Pressure Relief Valve. Adjustable 50-175 Psi. Lead Free. 3/4 Inch
   Model: LF530C-075
LF530C-075 Watts Calibrated Pressure Relief Valve. Adjustable 50-175 Psi. Lead Free. 3/4 Inch
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    watts valveWatts Adjustable Pressure Relief Valve, Lead-FreeLF530C-075


    530C Calibrated Pressure Relief Valves are spring operated designed for use only as protection from the build up of excessive pressure in systems containing water, oil or air. Series 530C valves incorporate a calibrated adjustment feature for setting the valve to the relief pressure required. These valves are ideally suited for bypass thermal expansion pressure relief.

    Product Application:
    530C Calibrated Pressure Relief Valves are used in Commercial, residential and industrial applications. Idealy suited for use with solar water heating systems; for use on the collector loop.

    Product Function:
    Watts Adjustable Pressure Relief Valves protect against excessive pressure in systems containing water, oil, or air.

    Note: The Watts Series 530C are not ASME approved safety relief valves and should not be used in system application with this requirement.

    Product Features:
    Calibrated adjustment feature for setting valve to relief pressure
    Adjustable range 50 175psi (3.45 12.06 bars)
    All bronze construction
    All stainless steel springs
    Buna-N disc on machined body seat
    Inlet (bottom), male NPT threaded
    Outlet (side), female NPT threaded

    valve 530C diagramMaterials:

    1. Body -

    2. Bonnet
    - Brass

    3. Disc Holder
    - Brass

    4. Disc
    - Buna-N

    5. Adjustable Spring
    - Stainless Steel

    6. 0-Ring
    - Buna-N

    7. Spring Washer
    - Brass

    Pressure Temperature
    Maximum Temperature: 180 F (82 C)
    Maximum Operating Pressure: 300psi (20.67 bars)
    Adjustable Pressure Ranges: 50 to 175psi (3.45 to 12.06 bars).

    Spring Ranges
    1/2" (15mm): 100 300psi (6.89 20.67 bars)

    A typical solar domestic water heating system components and layout is shown below.


    HELP Contact Customer Support
    Toll-Free help line offering product info and ordering support
    Online e-mail technical and installation support

    LINK Product Installation Manual

    Product Limited Warranty: Watts Regulator Company warrants each product against defects in material and workmanship for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge. This shall constitute the exclusive remedy for breach
    of warranty, and the Company shall not be responsible for any incidental or consequential damages, including without limitation, damages or other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemicals, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication or improper

    Product Manufacturer: Watts Industries Inc.

    Processing and Delivery Information: Please allow Processing Time as stated above for your order, plus standard transportation delivery time. Orders placed after 2PM EST may not begin processing until the next business day. Please call for Rush Processing and/or Rush Shipping options.

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