Granzon Digital Air Pressure Meter / Leak Tester (GYB II)
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Granzon Digital Air Pressure Meter / Leak Tester (GYB II)

GYBII Only 5 left in Boise, ID
$119.99USDFree shipping over $125

US import duties and tariffs are included in every price.

Ships the same business day on orders placed before 2:00 PM MST. Overnight delivery available at checkout.
Ships directly from our Idaho inventory. You avoid overseas sellers, processing delays, international shipping, customs hold-ups and additional fees.
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Building your first loop? Plan the rest of it
Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Exclusive US distributor
The official US source for Bykski, so every part is genuine.

Before you install it

This is a component, not an assembly — how it goes in depends on the loop it is joining. What does not change is the last step: leak test before power. Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Custom water cooling is installed by you, at your own risk. We are not responsible for leaks, or for damage to your parts or system. If you're unsure at any step, ask before you power the loop.

About this part

The Granzon Digital Air Pressure Meter / Leak Tester (GYB II) is a top-tier tool engineered for precision and reliability. Designed with both professionals and DIY enthusiasts in mind, this device offers an unparalleled level of accuracy in monitoring and detecting air pressure levels and leaks in various systems. 

Features:

  • High Precision Measurement: Utilizes advanced sensor technology to provide accurate air pressure readings.
  • Digital Display: Features a large, easy-to-read LCD screen displaying real-time measurements.
  • User-Friendly Interface: Simple button operations allow quick and easy measurement and testing.
  • Leak Detection: Equipped with sensitive detection capabilities to accurately identify even the smallest leaks.

Specifications:

  • Dimensions: 76.30mm x 62.00mm x 40.50mm

Parts Included:

  1. Granzon Digital Air Pressure Meter / Leak Tester (GYB II)
  2. 2x Push Fittings 
  3. 1x Testing Tube

Warning: This product is designed for self-installation. The manufacturer is not liable for any damages resulting from misuse, including, but not limited to, improper installation or the use of incompatible hardware or fluids. By using this product, you accept all related risks.

Datasheet
TypePressure Valve
Shipping weight2.0 lb
SKUGYBII

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

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Questions people ask about this part

Answers specific to GYBII. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?
Compatibility for this part is listed in the compatibility notes on this page. Bykski machine to a specific hardware layout, so send us your exact model and we will confirm it against part number GYBII before you order.
Is it in stock, and when will it ship?
Yes — only 5 left in Boise, Idaho. Orders placed before 2:00 PM MST on a business day ship the same day — we do not ship weekends or US holidays. Overnight delivery is available at checkout.
Can I return it if it turns out not to fit?
Yes. Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used. So we would rather check the fit with you first: send us the model and we will check it against this part.
Will I pay import duties or customs charges on delivery?
Not on a US order. US import duties and tariffs are already included in the price, so nothing is collected at the door and there is no brokerage fee. Orders shipped outside the US may owe that country's customs fees and duties.
Who handles the warranty?
BYKSKI.US, the exclusive US distributor, from Boise, Idaho. Claims are handled domestically rather than returned to an overseas factory. Installation is at your own risk: we are not responsible for leaks or damage to other hardware.
Is shipping free?
Shipping is free on orders over $125 to addresses in the lower 48 US states.
Are printed instructions included?
No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.
Do I need anything else to use it?
Check the parts list above against what you already have. If you are building a loop from scratch, send us the full parts list and we will tell you what is missing before you order.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $119.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility