R57L Series piping pressure regulator

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R57L Series piping pressure regulator

The R57L is a dedicated pressure regulator designed specifically for pipeline terminals. Its most significant design feature is the limitation of the maximum inlet pressure (only 2.5 MPa), thereby optimizing the adjustment accuracy in the low-pressure range. It is commonly installed on wall terminals or workbenches in centralized gas supply systems in laboratories to further reduce the pressure of medium-pressure gas in the pipeline to the precise operating pressure required by the instrument. Featuring an all-brass body, it is lightweight (1.0 kg) and complies with UL safety standards, ensuring safe operation within building gas systems. For factories with sophisticated management practices, the R57L is a core component in implementing a "staged pressure reduction, end-point fine-tuning" strategy, effectively improving gas utilization and reducing the risk of equipment damage due to excessive pressure.

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Model Number

Gas Service

Max. inlet Pressure(MPa)

Delier Pessure(MPa)

Het gauge(MPa)

Outlt Gauge(MPa)

Inlet Connection

Outet connection

R57LX-15

OXYGEN

2.5 

0.03~0.85

N/A

1.6 

1/4"NPT(F)

1/4"NPT(F)

R57LX-15-N

2.5 

0.03-0.85

N/A

1.6 

M16-1.5RH(M)

M16-1.5RH(M)

R57LY-15

ACETYLENE

2.5 

0.01~0.1

N/A

0.25 

1/4"NPT(F)

1/4"NPT(F)

R57LY-15-N

2.5 

0.01~0.1

N/A

0.25 

M16-1.5RH(M)

M16-1.5RH(M)

R57LF-80

LPG

2.5 

0.02~0.56

N/A

1/4"NPT(F)

1/4"NPT(F)

R57LF-80-N

2.5 

0.02~0.56

N/A

M16-1.5RH(M)

M16-1.5RH(M)

R57LIN-125

Ar、He、N

2.5 

0.03-0.85

N/A

1.6 

1/4"NPT(F)

1/4"NPT(F)

R57LQ-125

AIR

2.5 

0.03~0.85

N/A

1.6 

1/4"NPT(F)

1/4"NPT(F)

R57LH-80

HYDROGEN

2.5 

0.02-0.85

N/A

1/4"NPT(F)

1/4"NPT(F)

R57LC-125

CO₂

2.5 

0.03~0.85

N/A

1.6 

1/4"NPT(F)

1/4"NPT(F)

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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