Granzon Digital Air Pressure Meter / Leak Tester (GYB)

Availability : In stock, In Boise ID USA Pre-Order Now Out of stock
$99.99 USD
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Leak test your system easily with the Granzon Digital Air Pressure Meter / Leak Tester. Connect the meter at a convenient stop cap location in your loop. Press the start button and watch as the digital display reports the PSI, motor start countdown, test time, and pressure load.

  • 1 Click Automated Tester
  • Easy to Use
  • Preventative Safety Tool
  • Thread:G 1/4


Parts Included
  • 1x Granzon Air Pressure Meter / Leak Tester

Not responsible for any damage caused by or when using this product. Please use at your own risk. 

Reviews | Q&A

Customer Reviews

Based on 1 review
Nicholas S.
Solid testing Device to have in your kit

Overall I’m very happy with the device. Key thing for me is the post test result that shows the pressure change over the test time. It also reporting the volume of the loop tested was a pleasant surprise.

There is one main thing that holds me back from giving 5 stars. The connector that screws into the loop equipment the treading seems to be just slightly too long. Used EKWB parts and several times I was troubleshooting a loop only to find out the test connector was the part not forming a tight seal. Worked around the issue by using a EKWB static 14mm extender. Once I had that on I didn’t run into an issue without not getting a tight seal

The second thing is the power adapter is a molex instead of a SATA power connector. I had ordered a couple of molex to SATA adapters so it wasn’t big deal and I could have pulled out a molex AUX power cord if I really needed it. Not a big deal just a minor quality of life thing I worked around. Needing to contact the device to a computer PSU in general wasn’t a concern for me since I was already using a spare PSU to do pump testing and such. Imagine this is pretty common to have a spare PSU around to do future loop cleaning and such. Don’t have to mess around with disconnecting my MB and messing with the cabling grooming.

Return/Exchange/Shipping Policy

Return Policy for New Products:

For international customers please reference this page for duties/tax information.

Products returned for credit must be received within 30 days of the invoice, and a 15% restocking fee will apply. If your order was sent using "free shipping," the amount for outbound shipping will be deducted from your refund. If 30 days have passed since your purchase, unfortunately, we can’t offer you a refund or exchange.

All returned items must be in like new condition with all related parts including screws, manuals, etc. If you have lost, thrown away, scratched or opened sealed boxes or bags – a higher restock fee may apply upwards of 50%.

If a customer is misleading about the defect and evidence of incorrect install/use or tampering has occurred, a higher restock fee may be assessed or the return may be completely denied. A qualified technician will test each returned product for defects. will not assess a restocking fee for defective products.

Sale items  or Pre-owned (if applicable)
Only regular priced new items may be refunded or returned, unfortunately sale items and Used/Pre-owned/Open box items cannot be refunded.

Returns will not be accepted without an RMA number provided from 

Return Shipping

Customers are responsible for ALL return shipping charges on merchandise for any reason. Unless otherwise noted, shipping on products and returns is non-refundable, and returning a product comes at the customer's expense. The customer will be responsible for paying for shipping products/orders back to For no reason, do we refund the outbound shipping cost. If your order was sent using "free shipping," the amount for outbound shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

Please ship using a carrier that provides a tracking number, insurance and proof of delivery. is not responsible for return items lost by the carrier. Valid proof of delivery must include the receipt signature of an authorized employee.

Erroneous Shipments
In the event an incorrect item is shipped in your order, the correct item / replacement will be shipped using the same method as the original order.

Damaged Items
:  All packages are fully insured at no additional charge.

If you receive a damaged package, you must notify us within 48 hours of receipt. Sending back damaged merchandise voids the shipping insurance and no credit will be given. Damaged packages must be held for five days with original packaging for carrier inspection.

Shipment Refusal

Shipping Policy

Selecting overnight shipping method will not ensure that your order ships same day and is not guaranteed.


Once an order is placed on our e-commerce website, it cannot be canceled/changed or held. This is because our fully automated systems immediately start processing the order, which cannot be stopped or reversed. Therefore, we advise customers to double-check their orders before making a purchase.

Additionally, we would like to emphasize that our e-commerce website ships 98.5% of orders on the same day they are placed by 2:00 pm MST. Allowing cancellations after an order is placed would significantly slow down our shipping process and potentially affect the delivery times for other customers.

We understand that it can be frustrating to be unable to cancel an order, but we ask for your understanding in this matter. By adhering to our cancellation policy, we can ensure that our automated systems and shipping processes continue running smoothly, allowing us to provide fast and efficient service to all our customers.

We understand that sometimes mistakes can happen, and customers may accidentally order the wrong item or change their minds about a purchase. In such cases, we suggest that customers consider our return policy instead.


Most of the time pre-ordered items are newly released products and may be subject to price increases and feature changes as more information is provided to us the reseller. 

The item's packaging (dimensions, weight, additional handling, shipping rate changes), delivery schedule and included options are subject to change and therefore the original estimated price listed and delivery date may change once the final information is received. As we get more information about the packaging, pricing, and inclusions, the final features/pricing may change before fulfillment. 

In the event of a price change or feature change the customer will be notified immediately and will be given the option to cancel the order, change the order or pay additional funds to cover the increases.