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SPARC Nitrogen Flow Indicator 1/4" SAE Flare Inlet / Outlet 50PSI

SPARC Nitrogen Flow Indicator 1/4" SAE Flare Inlet / Outlet 50PSI

Regular price $26.00
Regular price Sale price $26.00
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The SPARC Nitrogen flow indicator provides extremely low pressure, precision gas flow control for nitrogen purging applications. This is important during the brazing of copper tubing in air conditioning and refrigeration systems. The nitrogen must be flowing to displace the oxygen inside the tubing during the brazing process, thus preventing internal oxidation and the resulting scale. Scale build-up inside the tubing can cause blockage in the TXV and within the air conditioning and refrigeration system. This results in premature failure.

Easy to Read Indicator

SPARC's Nitrogen flow indicator uses a float ball to visually confirm the nitrogen is flowing. This is essential during the brazing of copper tubing in HVAC systems. During this process, a technician is able to first flush the copper lines at 25-35 CFH and then reduce the flow to 3-4 CFH. This process greatly aids in conserving and saving nitrogen. If the ball does not rise in the tube, there is no flow of nitrogen. There is only static pressure. The oxygen is not displacing.

50 PSI Inlet Pressure

The maximum inlet pressure is 50 PSI. This product must connect to a nitrogen regulator with a 1/4" male flare outlet connection (SPARC SP00021 – sold separately). This is to control the nitrogen gas pressure. It is compatible with UNIWELD RHP400, RHP500, RHP750, and similar style regulators as well. SPARC's nitrogen flow indicator has a 0-75CFH flow output at 50 PSI.

Simple Connections

SPARC's Nitrogen Flow indicator has a 1/4" SAE female flare inlet connection, as well as a 1/4" SAE male flare outlet connection.

Safety is a Top Priority

Because SPARC is able to provide extremely low flow with high precision gas control, this nitrogen flow indicator is extremely safe to use. On top of that, an over-pressure safety relief rupture disk has been installed in the product to keep all customers safe.

Two Year Warranty

All of our flow indicators are backed by our 2 year USA warranty against manufacturing defects. We are based out of Denver, CO, and offer customer service and support via phone, text, and e-mail.

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    When will it arrive?

    Upon checkout, you will have 2-4 shipping speeds available, with guaranteed delivery dates.

    Tell me about that warranty!

    Most of our products are covered by no-hassle warranty against any manufacturing defects. It does NOT cover user damage or abuse. Please email to receive warranty service.

    Can I order custom parts?

    Yes, absolutely! We can make almost anything you can imagine. Order
    minimums do apply. Contact us today for all your custom and private label needs at

    Shipping & Returns


    We can ship to virtually any address in the world. Order cut-off time
    for same-day shipment is 2:00PM MST M-F. Note that there are
    restrictions on some products, and some products cannot be shipped to
    international destinations.

    When you place an order, we will estimate shipping and delivery dates
    for you based on the availability of your items and the shipping
    options you choose. Depending on the shipping provider you choose,
    shipping date estimates may appear on the shipping quotes page.

    Please also note that the shipping rates for many items we sell are
    weight-based. The weight of any such item can be found on its detail
    page. To reflect the policies of the shipping companies we use, all
    weights will be rounded up to the next full pound.

    Returns Policy

    You may return most new, unopened items within 30 days of delivery
    for a full refund. We'll also pay the return shipping costs if the
    return is a result of our error (you received an incorrect or defective
    item, etc.).

    You should expect to receive your refund within 2 weeks of giving
    your package to the return shipper, however, in many cases you will
    receive a refund more quickly. This time period includes the transit
    time for us to receive your return from the shipper (5 to 10 business
    days), the time it takes us to process your return once we receive it (3
    to 5 business days), and the time it takes your bank to process our
    refund request (5 to 10 business days).

    If you need to return an item, simply login to your account, view the
    order using the 'Complete Orders' link under the My Account menu and
    click the Return Item(s) button. We'll notify you via e-mail of your
    refund once we've received and processed the returned item.