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R57B Series medium-sized pressure regulator

Home / Products / Stainless Steel Pressure Regulator / R57B Series medium-sized pressure regulator

R57B Series medium-sized pressure regulator

The R57B features targeted upgrades to its appearance and surface protection, with both the main body and top cover employing a precision electroplating chrome process. This treatment not only gives the product a mirror-like metallic finish but, more importantly, significantly enhances its oxidation resistance in humid or slightly corrosive environments, extending its lifespan. Its performance parameters remain robust, with a maximum inlet pressure of 15MPa, suitable for medium-flow industrial gas distribution, and supports various connection specifications such as G5/8" or W21.8. For users who prioritize the overall aesthetics of their laboratory environment or whose working conditions experience significant temperature and humidity fluctuations, the R57B offers a perfect balance between performance and aesthetics.

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Model Number

Gas Service

Max.het Pressure(MPa)

Delier Pressure(MPa)

Het gauge(MPa)

Outet Gauge (MPa)

Inlet Connection

Outlet connecion

R57BX-15

OXYGEN

15 

0.01～0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57BX-40

15 

0.01-0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57BX-80

15 

0.02~0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57BX-125

15 

0.03-0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57BY-15

ACETYLENE

3 

0.01~0.1

4 

0.25 

Bottle rack

M16-1.5LH(M)

R57BF-40

LPG

3 

0.01～0.28

4 

0.4 

M22-1.5LH(M)

M16-1.5LH(M)

R57BF-80

3 

0.02-0.56

4 

1 

M22-1.5LH(M)

M16-1.5LH(M)

R57BF-125

3 

0.03～0.85

4 

1.6 

M22-1.5LH(M)

M16-1.5LH(M)

R57BIN-15

Ar、He、N₂

15 

0.01～0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57BIN-40

15 

0.01-0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57BIN-80

15 

0.02～0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57BIN-125

15 

0.03～0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57BQ-15

 AIR

15 

0.01~0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57BQ-40

15 

0.01～0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57BQ-80

15 

0.02-0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57BQ-125

15 

0.03～0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57BH-40

HYDROGEN

15 

0.01～0.28

25 

0.4 

W21.8-14LH(F)

M16-1.5LH(M)

R57BH-80

15 

0.02-0.56

25 

1 

W21.8-14LH(F)

M16-1.5LH(M)

R57BH-80-V

15 

0.02～0.56

25 

1 

W21.8-14LH(F)

M16-1.5LH(M), with regulating valve

R57BH-125

15 

0.03～0.85

25 

1.6 

W21.8-14LH(F)

M16-1.5LH(M)

R57BC-40

CO₂

15 

0.03~0.85

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57BC-80

15 

0.02～0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57BC-125

15 

0.03-0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

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

It is R57B Series medium-sized pressure regulator Suppliers and R57B Series medium-sized pressure regulator Factory.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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