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R57 Series medium-sized pressure regulator

Home / Products / Stainless Steel Pressure Regulator / R57 Series medium-sized pressure regulator

R57 Series medium-sized pressure regulator

The R57 series single-stage pressure regulator has become an industry benchmark for medium-flow gas control due to its robust and durable construction and wide applicability. It comes standard with an easy-to-read 2-inch pressure gauge and an external safety valve. In the event of abnormal system pressure, the safety valve responds quickly to ensure the safety of operators and downstream pipelines. The product is widely used for various common industrial gases such as oxygen, acetylene, propane, and argon. The internally integrated sintered bronze filter provides the first line of defense, effectively preventing the risk of sparks caused by impurities. In agricultural maintenance, routine laboratory testing, and industrial welding and cutting environments, the R57 consistently enjoys a high market share due to its stable output and ease of maintenance.

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Model Number

Gas Service

Max. inlet Pressure(MPa)

Delhe Pressure(MPa)

Irlet gauge(MPa)

Oulel Gauge(MPa)

Inlet Connection

Outlet connecion

R57X-15

OXYGEN

15 

0.01~0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57X-40

15 

0.01～0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57X-80

15 

0.02-0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57X-125

15 

0.03～0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57Y-15

ACETYLENE

3 

0.01-0.1

4 

0.25 

Bottle rack

M16-1.5LH(M)

R57F-40

LPG

3 

0.01~0.28

4 

0.4 

M22-1.5LH(M)

M16-1.5LH(M)

R57F-80

3 

0.02～0.56

4 

1 

M22-1.5LH(M)

M16-1.5LH(M)

R57F-125

3 

0.03-0.85

4 

1.6 

M22-1.5LH(M)

M16-1.5LH(M)

R57IN-15

Ar、He、N₂

15 

0.01～0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57IN-40

15 

0.01～0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57IN-80

15 

0.02-0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57IN-125

15 

0.03～0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57Q-15

 AIR

15 

0.01～0.1

25 

0.25 

G5/8"-RH(F)

M16-1.5RH(M)

R57Q-40

15 

0.01~0.28

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R570-80

15 

0.02～0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57Q-125

15 

0.03-0.85

25 

1.6 

G5/8"-RH(F)

M16-1.5RH(M)

R57H-40

HYDROGEN

15 

0.01～0.28

25 

0.4 

W21.8-14LH(F)

M16-1.5LH(M)

R57H-80

15 

0.02～0.56

25 

1 

W21.8-14LH(F)

M16-1.5LH(M)

R57H-80-V

15 

0.02-0.56

25 

1 

W21.8-14LH(F)

M16-1.5LHM, with regulating valve

R57H-125

15 

0.03～0.85

25 

1.6 

W21.8-14LH(F)

M16-1.5LH(M)

R57C-40

CO₂

15 

0.03-0.85

25 

0.4 

G5/8"-RH(F)

M16-1.5RH(M)

R57C-80

15 

0.02-0.56

25 

1 

G5/8"-RH(F)

M16-1.5RH(M)

R57C-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 R57 Series medium-sized pressure regulator Suppliers and R57 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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