Sheet 3 Boiler Valve Data Sheet BHCN-1541-1543-FS-20196F-0222-English.pdf

Overview Baker Hughes’s Consolidated 1541 and 1543 Series safety valves are designed for steam and other compressible fluids.

They are most commonly used in pharmaceutical, dyeing and process plants.

Features and Benefits

• Equipped with two adjusting rings to allow for sharp opening action and full lift at 3 percent overpressure.

• Low spindle bearing point between the spindle and disc for improved tightness.

• Self-aligning spring washer for reliability and long life.

• Precision wound spring, ± 5 percent tolerance on rate to ensure repeatability and maximum tightness.

Manufactured and capacity-certified to ASME Code.

Sections I (V Designator) and XIII (UV Designator).

• Valves tested on steam.

• Seats checked for tightness on steam.

• The adjustable lifting mechanism can be positioned in any location with 300 degrees of rotation to facilitate ease of installation.

Options 1543-3: A duplicate of the Consolidated 1543 safety valve, but supplied with a 304 stainless base and disc.

1541-3: A duplicate of the Consolidated 1541 safety valve, but supplied with a 304 stainless steel base and disc.

Bronze Bonnet: When cast iron bonnets are not permitted, a bronze bonnet option is available.

Low Pressures: For low pressures, a special low pressure design is provided to ensure maximum flow capacities against atmospheric pressure.

Spring: When chrome alloy springs are not permitted, a 17-7PHSS spring is available.

Connections Consolidated 1541 safety valve is supplied with inlet sizes of 0.75” (19.1 mm) to 2.5” (63.5mm). The 1543 safety valve sizes are supplied with inlet connections of 0.5” (12.7mm) to 2” (50.8 mm). All inlet connections are male NPT with standard hex head on surfaces for easy wrenching.

Note:

The discharged fluid may escape to the atmosphere through the bonnet vent and drain hole; therefore, toxic or hazardous applications must be avoided.

Consolidated™ 1541-1543 Series Safety Valves

1. Baker Hughes’s current National Board Certification limits the 1541-3/1543-3 to 300 psig (20.68 barg) for code-stamped applications.

1541 Standard Inlet and Outlet Connections

Orifice Discharge

Area Inlet Size Male NPT

Outlet Size Female NPT in2 cm2 in mm in mm

D 0.110 0.710 0.75 19.1 0.75 19.1

E 0.196 1.265 1 25.4 1 25.4

F 0.307 1.981 1.25 31.8 1.25 31.8

G 0.503 3.245 1.5 38.1 1.5 38.1

H 0.785 5.065 2 50.8 2 50.8

J 1.287 8.303 2.5 63.5 2.5 63.5

1543 Standard Inlet and Outlet Connections

Orifice Discharge

Area Inlet Size Male NPT

Outlet Size Female NPT in2 cm2 in mm in mm

D 0.110 0.710 0.5 12.7 0.75 19.1

E 0.196 1.265 0.75 19.1 1 25.4

F 0.307 1.981 1 25.4 1.25 31.8

G 0.503 3.245 1.25 31.8 1.5 38.1

H 0.785 5.065 1.5 38.1 2 50.8

J 1.287 8.303 2 50.8 2.5 63.5

Pressure/Temperature Limits

Valve Type Media Orifice

Temperature Range Maximum Set Pressure min. max.

°F °C °F °C psig barg

1541 / 1543 Steam All -20 -28.9 406 207.8 250 17.24

1541 / 1543 Air All -20 -28.9 406 207.8 300 20.68

1541-3 / 1543-3(1) Steam D -20 -28.9 420 215.6 350 24.13

1541-3 / 1543-3 Steam E - J -20 -28.9 420 215.6 300 20.68

1541-3 / 1543-3 Air All -20 -28.9 420 215.6 350 24.13

Inlet Sizes .5” (12.7 mm) through 2.5” (63.5 mm) threaded

Outlet Sizes 0.75” (19.1 mm) through 2.5” (63.5 mm) threaded

Orifice Sizes Six sizes: D through J

Pressure Range 5 psig (0.34 barg) to 350 psig (24.13 barg)

Temperature Range -20°F (-28.9°C) to 420°F (215.6°C)

Materials Cast iron bonnet with brass base and trim is standard. Available with bronze bonnet. Stainless steel base and disc are also optional.

Certification ASME B&PVC Section I (V) and XIII (UV)

Blowdown 4 percent

Back Pressure Limit 10 percent of Set Pressure

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BHCN-1541-1543-FS-20196F-0222 02/2022 valves.bakerhughes.com