Does the Presta valve adapter have a valve core depressor? I want to know is whether a pressure gauge attached to the chuck will show tire pressure

Yes, this can function with gauges and inflators as long as the fitting are 1/4 npt. Hope this helps.

If i purchase new 2.0 compressor can i attach this chuck direct to compressor hose like i do with a schader ball chuck. If it has auto stop built in.

This Jaco Lightning air chuck does have auto stop. When removed from tire, air does not escape. She threads onto hose for secure fit, using standard teflon tape or putty to seal the threads. Surprisingly high quality product, metal chromed body, not plastic, made in USA. Highly recommended.

I have a lezyne floor pump with abs-1 pro chuck. i am dissatisfied with the lezyne chuck. can i simply screw the jaco onto the lezyne?

This chuck is compatible with 1/4" NPT fittings. We recommend viewing the specs of your current item to verify the fitting.

Will this chuck still lock onto a presta valve if the valve core has been removed?

I use it this way to seat the bead on my MTB tires (Specialized Butcher 27.5 x 2.6''). Since I already remove the presta valve core to add sealant, saves a little time by just twisting on this adapter and knowing ALL of the air is going into the tire. Versus using a blow gun and worrying it may not seat if it doesn't get enough air in there fast enough.

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⚡ Inflate Like a Pro, Lock Like a Boss!

DISCONNECT IN A FLASH - Patented quick-release sleeve lets you detach instantly with zero air loss—precision inflation made effortless.
360 FREEDOM TO INFLATE - Right-angle 90° body with a full swivel head lets you easily access tight wheel spokes and eliminates hose tension.
DUAL VALVE COMPATIBILITY - Seamlessly switch between Presta and Schrader valves with a simple twist—one tool for all your bike tires.
LOCK IT DOWN NO AIR LOST - Military-grade TwistLock tech ensures an airtight seal on both Presta & Schrader valves—no more frustrating leaks or valve fights.
BUILT TOUGH FOR THE LONG HAUL - Crafted from high-density aluminum alloy and backed by a lifetime warranty—engineered for pros who demand durability.

The JACO Lightning L3-Series Tire Air Chuck is a premium dual-valve inflator accessory featuring patented TwistLock technology for an airtight seal, a quick-release sleeve for zero air loss, and a 360° swivel right-angle design for easy access between wheel spokes. Made from durable aluminum alloy and backed by a lifetime warranty, it’s engineered for professional-grade bike tire inflation with seamless compatibility for both Presta and Schrader valves.

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Brand	JACO Superior Products
Package Dimensions	14.7 x 7.6 x 2.7 cm; 91 g
Item model number	Q9-4IUD-QFOM
Manufacturer Part Number	L3-Series
Material	Aluminum alloy
Country of Origin	USA
Item Weight	91 g

JACO Lightning Tire Air Chuck for Bikes (L3-Series) | Presta & Schrader - 1/4" NPT, 2 Pack

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