https://ckt2017.en.made-in-china.com/product-list-1.html

Product Description
HS703 Pneumatic Pressure Comparison Pump is portable structure and designed to generate pressure from vacuum to 60bar. Built-in filter protects the pump from dirty and make maintenance easy and convenient. The F-adjust valve could accomplish 10Pa (0.1mbar) pressure resolution. Especially the lever lead screw design makes user operate in economize labor. the design of reverse valve makes the switch of vacuum and positive pressure more smooth. Two standard pressure outputs are easy to connect gauges under test without using the wrenches. It widely calibrates pressure instruments in field and laboratory.
Technical Specification
  Generated pressure range: (-0.95~16/25)bar The model HS702
                                         (-0.95~40/60)bar The model HS703
                                         
  Working media: Air
  Adjust resolution: 0.1mbar
  Material: Body: Stainless steel /Aluminium
                 Seals:Buna-N
  Output interface connection:  M20×1.5Female
  Weight:2.7kg
  Dimensions:286L×198W×140H (mm)

Functions 
HS703 provides pressure measurement for calibrating pressure instruments in field and laboratory. It can be extensively used in power, chemical, petrol, metallurgy, metering, military industry, etc.

Characteristics 
  portable structure
  Built-in filter protects the pump from dirty and make maintenance easy and convenient
  user operate in economize labor
 

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Chuangkai Electronic Co., Ltd is leading company specialized in producing, developing & selling various types of measuring instruments and testing equipment, such as temperature data logger, LCR meter, DC resistance tester (micro ohm meter), digital power meter, power supply, transformer tester, battery tester, programmable DC electronic load, charger, temperature controller, tachometer, high voltage signal-amplifier, power amplifier, etc.

FAQ:
Q. How is your company's product after-sales service system?
A. The product warranty period is 12 months, we can provide lifetime maintenance. We have professional pre-sales and after-sales teams that can respond to you within 24 hours to resolve technical issues. We provide one-to-one after-sales service.

Q: Can you customize it?
A: Yes, we accept customization according to customer's specific requirements.

Q. How long is your lead time? If I want to customize instruments, how long will it take?
A. When order quantity is 1-10 units, we have ready stock goods, we can ship out within 3-5 working days after receipt of deposit; products required new production of common materials, usually the lead time is about 10-15 days; products requiring new production of special and rare materials, usually the lead time is about 20-30 days.

Q. What payment method do you accept?
A. Our company accept payment method of T/T (bank transfer), Western Union, PayPal and so on.

Q. What package do you use for your products? What shipping method do you use?
A.1. Our company use standard exporting carton for packing. 2. We ship via express courier (door to door service), by air, and by sea according to customers' requirements.

For more questions, please feel free to send inquiries to us.