The advertized Delivery Pressure of this regulator is 400psi, but the delivery gauge shown in the photo shows a max pressure of 600 psi. Which is it?

When the first stage of the regulator is supplied with > 600 PSI, the output is limited to roughly 480 PSI in the fully open position. Also, the guy that said you wouldn't need to go that high for normal use is an idiot. Nobody knows what you will be using this regulator for.

How is the CGA-580 fitting threaded into this unit? I want to take that out and use NPT as much as I can.

Purchase a LASCO 17-6783 1/4-Inch Female Flare by 1/4-Inch Male Pipe Thread Brass Adapter. Don't attempt to remove the existing NPT-to-flare fitting because it is sealed into the regulator assembly and you risk damaging the regulator.

Will this work with argon

Yes it will work with argon. The regulator has a CGA 580 inlet connection and a 1/4" male flare outlet connection.

I purchased this regulator and the yellow hose does not attach to the 1/4" flare, it is to small. The yellow hose fitting is to big?

You are not using standard refrigeration hoses. Sounds like your either using the mini- split adapter or larger vacuum type hoses. Take it by an HVAC supplier and they will show you the proper size.

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Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection

Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection

Product ID: 954958

Details

Brand
Uniweld
Exterior Finish
Inlet Connection Size
0.25 inches
Inlet Connection Type
Flare
Item dimensions L x W x H
6.5 x 4.13 x
Material
Brass

📏Easy-read 2-inch gauges

🔩Durable brass piston diaphragm

⚙️0-400 PSI precise delivery

AR$396439

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your pressure game with precision and durability!

BUILT TO LAST - Robust brass piston diaphragm and stainless steel adjusting screw ensure long-term reliability without galling.
USER FRIENDLY DESIGN - Large brass Tee handle and protective rubber gauge boots make adjustments effortless and gauges easy to read.
COST SAVING CONVENIENCE - DIY nitrogen charging capability saves you up to 95% compared to shop service fees—maintenance made smart.
VERSATILE COMPATIBILITY - Works seamlessly with nitrogen and CO2 (with optional adaptor), perfect for multi-application pros.
PRECISION PRESSURE CONTROL - Smooth, accurate delivery from 0 to 400 PSI for flawless system purging and testing.

The Uniweld RHP400 Nitrogen Regulator delivers precise pressure control from 0-400 PSI with durable brass piston diaphragm construction and easy-to-read 2-inch gauges protected by rubber boots. Featuring a large brass Tee handle and stainless steel adjusting screw to prevent galling, it ensures smooth, reliable adjustments. Compatible with nitrogen and CO2 (with adaptor), this regulator is ideal for professionals seeking cost-effective, versatile, and long-lasting pressure regulation solutions.

Specifications

ASIN	B008HQ6GXO
Best Sellers Rank	#174,724 in Automotive ( See Top 100 in Automotive ) #73 in Welding Gas Regulators
Brand Name	Uniweld
Connector Type	not_applicable
Customer Reviews	4.6 4.6 out of 5 stars (818)
Exterior Finish	not_applicable
Global Trade Identification Number	00688456130009
Included Components	Regulator
Inlet Connection Size	0.25 inches
Inlet Connection Type	Flare
Item Dimensions	6.5 x 4.13 x 5.25 inches
Item Type Name	Special Purpose Nitrogen Regulators
Item Weight	2.4 pounds
Manufacturer	Uniweld
Manufacturer Part Number	RHP400
Material Type	Brass
Maximum Pressure	400 psi
Model Number	RHP400
Number of Items	1
Number of Packs	1
Number of Pieces	1
Number of Ports	1
Outlet Connection Size	0.25 inches
Outlet Connection Type	Flare
Size	CGA580
Specification Met	not_applicable
Thread Size	0.25 inches
Thread Type	Flare
UPC	756655652711 696335181738 610373673949 785533152562 688456130009
Valve Type	Globe Valve

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