R190 Series flowmeter-type pressure regulator

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R190 Series flowmeter-type pressure regulator

The R190 series offers precise flow control while significantly enhancing the protection of its core components, most notably with a robust flow meter protective cover. This design effectively prevents flow tube breakage due to accidental impacts during gas cylinder handling or workshop operations, greatly extending the equipment's lifespan. As a single-stage structure, it boasts a substantial 2.1kg weight, making it widely applicable to harsh welding environments such as petroleum, chemical, and shipbuilding industries. Its smooth-touch flow adjustment knob allows for precise fine-tuning even when wearing heavy welding gloves, exemplifying a perfect blend of durability and practicality.

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Model Number

Gas Service

Outlet Flowmeter

Inlet gauge(MPa)

Inlet Connection

Outlet connection

R190C-25L

CO₂

0-25LPM  CO₂

25 

G5/8"-RH(F)

M16-1.5RH(M)

R190A-25L

Ar

0-25LPM ARGON

25 

G5/8"-RH(F)

M16-1.5RH(M)

R190N-30L

N₂

0-30LPM NITROGEN

25 

G5/8"-RH(F)

M16-1.5RH(M)

About Us
Ningbo Keshengli Stainless Steel Valve Co., Ltd.
Ningbo Keshengli Stainless Steel Valve Co., Ltd.

Our company specializes in the manufacturing and sales of stainless steel pipe fittings and valves in national (GB), American (ANSI/ASME), and British (BS) standards. We are equipped with advanced CNC machining centers, material testing and heat treatment facilities, a skilled technical team, and a robust production workforce. With a sound quality management system and excellent after-sales service, we sincerely serve customers worldwide.

Our main products include: ferrule-type fittings, threaded fittings, instrument fittings, instrument needle valves, instrument ball valves, ferrule needle valves, ferrule ball valves, compact high-pressure instrument needle valves, compact high-pressure instrument ball valves, and high-pressure check valves. The primary material is SS316 stainless steel. These products are widely used in petrochemical, petroleum, electric power, pharmaceutical, food, papermaking, marine, and general machinery industries.

We strictly control product quality at every stage and are committed to delivering superior quality through advanced technology and professional management. Adhering to the business philosophy of "Quality First, Customer Supreme, Integrity Foremost," we strive to build the "NB-KSL" brand image, better serve our customers, and work together with you to create a prosperous future.

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News
  • NB-KSL® fittings are supplied assembled and finger tight. Disassembly before use can allow the entry of dirt or other particles.

  • The NB-KSL® tube fitting is a mechanism used both to seal and to grip tubing. The mechanical advantage and geometry of this type of fitting produce a leak-tight assembly. To assemble, simply insert th...

  • NB-KSL® has produced high quality tube and pipe fittings in various materials for high-pressure applications since its establishment in 2007. As a result of tremendous efforts in research and developm...