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.
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.
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.
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.