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DUOYI Digital Manifold Gauge Refrigeration Pressure Tester Vacuum Temperature Meter Air Conditioning Valve Tool PK HAVC TESTO

The intelligent electronic refrigerant group instrument is an auxiliary instrument for the installation, testing and maintenance of refrigeration equipment such as air conditioners and cold storage. The instrument has double pressure test, dual temperature test (need test clip).Note: DY517 does not include the test clip (need to be purchased separately), DY517A contains the test clip. And digital readout, multi-unit switching, multi-mode function and built-in refrigerant database. The instrument uses high​-strength engineering plastics and flexible non-slip silicone design, the whole machine is solid and comfortable to hold. Built-in 32-bit digital processing unit and high-precision data acquisition unit, high data and stability. Large-size liquid crystal display, LCD backlight support, data display clear and easy to read, convenient light operation. Long-life valve switch, 1/4-inch standard interface design to ensure that the instrument’s durability and versatility.
The instrument can measure double pressure (gauge pressure) at the same time, as well as dual temperature measurement , with automatic multi-unit pressure conversion, automatic conversion of temperature Celsius / Fahrenheit, to facilitate different needs. Built-in 89 kinds of refrigerant pressure-evaporation temperature database, also calculate the subcooling superheat, to facilitate direct reading of operating process data. Also it tests percentage of vacuum measurement; pressure leak measurement, leak time speed record. It is deserved to have this multi-functional, accurate and simply operated digital manifold let you do the job right.

Built-in 89 kinds of refrigerant NIST
According to American NIST standard
Safety rules and precautions
1) The pressure measured by the digtal manifold pressure tester is gauge pressure.
2) Pressure testing ranges from -101Kpa to 6Mpa (-0.1bar to 60bar).
3) The limit pressure is 10 Mpa (100 bar).
4) The maximum operating pressure of standard hose is 600 PSI ( approximate 4.13 Mpa, 41.3 bar ).
The limit pressure is 3000 PSI approximate 20.68 Mpa, 206.8 bar ).
5) Please confirm the rated pressure value of the tested equipment before testing.
Do not use it if it exceeds the range of the instrument. Also for DY517A, if the packed
hoses does not match the pressure requirement, you can use suitable replacements for testing.
6) Do not use and store the instrument in high temperature, high humidity, flammable, explosive and strong electromagnetic fields.
7) Please do not change the instrument internal circuit, to avoid any damage of the instrument or danger occurring.
8) Please wear qualified protective equipment to protect user during testing.
9) Please use the instrument in a well-ventilated environment to prevent inhalation of toxic gases.

Product specifications

Pressure test: gauge pressure
Pressure test unit: Kpa; Mpa; bar; inHg; PSI.
Pressure test range: 0 Kpa – 6000 Kpa
Pressure test resolution: 1 Kpa
Pressure test accuracy: +/- 0.5 %(FS)+ 5dgt
Pressure overload limit: 10000 Kpa (10 Mpa; 100 bar;)
Vacuum test: relative vacuum
Vacuum test unit: Kpa; Mpa; bar; inHg; PSI.
Vacuum test range: -101 Kpa – 0 Kpa
Vacuum test resolution: 1 Kpa
Temperature test unit: °C (Celsius), °F (Fahrenheit)
Temperature test range: -40°C–150°C (-40°F–302°F)
Temperature test resolution:
0.1°C (-40°C–99.9°C), 1°C (100°C–150°C)
0.1°F (-40°F–99.9°F), 1°F (100°F–302°F)
Temperature test accuracy: +/- 0.5 °C + 2dgt +/- 0.9 °F + 2dgt
Built-in 89 kinds of refrigerant NIST: According to American NIST standard
Power Supply: 4 X 1.5V (SIZE.AA / LR6) Battery not include
Dimensions: 170*110*50mm weight: 950g

Packing list:

Refrigerantion Digital Manifold Gauge *1
User Manual (in English) *1
(Power Supply: 4* AA Battery not include)
Refrigerantion Digital Manifold Gauge *1
User Manual (in English) *1
Temperature Clip *1
Test Pipe(90cm*3
Suitcase *1
(Power Supply: 4* AA Battery not include)
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow slight measuring deviation due to manual measurement.


1. We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.

2.Payment must be made within 3 days of order.

3. If you can’t checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.

1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)

2. All orders will be shipped out within 3 working days after we have successfully received your payment.

3. We offer regular Post Air Mail and have set up free shipping methods.

4. Since the trade is trans-national, as well as airmail is the cheapest shipping method, it will take a long time for delivery. If you don’t want to wait such a long time, please choose Express and pay the fee.

5. We are not responsible for your Customs duty.

1. If items are found in bad condition when received, please contact us freely. We can refund the money or resend a new one to you.

2. If you are not satisfied with the product because of personal preference, you can return it to us within 7 days. You need to pay the freight.

3.All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.

1.12 months warranty

2.If you are not satisfied when you receive your item or with quality problem,please contact us,we can offer return or resend warranty but please offer evidence to show the problem actively.

We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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15 Jan 2021

Very good. Product arrived in great condition. Thank you.

15 Jan 2021

جيد جدا

14 Jan 2021

Everything is fine. Fully satisfied.

14 Jan 2021

Excellent! Shortage of Russian translation only Took for 8760

13 Jan 2021

Good product and good service. Fast change broken goods. Thank you.

13 Jan 2021

빠른배송에 감사드립니다.^^

12 Jan 2021

I have received the gauge in very good order, it does the job very well , would like to say, it is functioning good. except a mounting screw was loosen, and found that the screw retaining plastic piece was broken, i guess the production may uses pneumatic gun too strong.

12 Jan 2021

Хороший прибор. Есть наиболее востребованные хладагенты. Расчитывает перегрев/переохлаждение, можно проводить тест на утечки с температурной компенсацией, в т.ч. на вакууме. Датчики шустрые, гораздо быстрее термометров с алика за 30р )) Сотые доли (в барах) скачут на нуле, но мне не критично. Вентили немного шатаются, если выкрутить, но работе не мешают. Шланги нормальные, но с дурацкими тефлоновыми уплотнителями. Буду менять на резиновые. Крутой чемодан, гораздо солиднее, чем у тесто. Брал для кондиционеров. Сначала хотел testo 550, но сейчас его делают в Китае и стоит он при этом 25500 (с хлипким кейсом и без шлангов). Проверил на заказе -все отлично работает, все устраивает, давно надо было взять. А тесто зажрались. Доставка -6 дней до Нижнего Новгорода (из России).

12 Jan 2021

С виду все качественно. Термометры точные. Остальное проверю позже.

10 Jan 2021

All Hood

7 Jan 2021

Из России в Москву пришло быстро,буквально 3 дня. Левый(синий вентиль заметно болтается в открытом состоянии, даже по сравнению с другим(красным), В работе пока не проверял.

5 Jan 2021

The goods came quickly. Corresponds to the description

4 Jan 2021

The parcel came in a week in Belgorod. Delivery from Russia. The device is serviceable and corresponds to the description. I am happy with the purchase, the ideal thing for repairing refrigeration equipment. The price is very happy. Seller respect.

4 Jan 2021

miernik bardzo solidnie wykonany. zestaw jest kompletny z przewodami i czujkami temp. działa Ok. Praktyczna i nieduża walizka.Polecam.

3 Jan 2021

Delivery took 4 days from Russia. The device works, there are no adapters under 410 refrigerants. Made qualitatively, in a durable case, looks nice! Recommend!

DUOYI Refrigeration Digital R410a Manifold Pressure Gauge Vacuum Pressure Temperature Meter Test Air-Conditioning PK TESTO 550

15 Reviews
US $190.70
US $254.28
10-30 days (ships out within 5 business days)
Selling fast: get yours before it’s gone!
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