28950-500 SERIES

FLOW LIMITER

INLINEMALE NPTF TO FEMALE NPTF

Description

AN IN-LINE FLOW LIMITER WITH A MALE NPTF INLET AND A FEMALE NPTF OUTLET THAT PREVENTS FREE FALL IN THE EVENT OF A LINE FAILURE, BUT ALLOWS A METERED FLOW AFTER CLOSING.

Product Rendering

Schematic

Typical Performance

Operation

  • FLOW FROM (2) TO (1) PASSES THROUGH THE CONTROLLING ORIFICE BUT IS UNCONTROLLED.
  • BLEED RATE AFTER CLOSING IS 2.0 - 3.0 GPM AT 3000 PSI.
  • FLOW ABOVE THE SPECIFIED LIMIT IS ASSUMED TO BE A LINE FAILURE AND IS LIMITED.
  • A FLOW BELOW THE SPECIFIED LIMIT IS ALLOWED FROM (1) TO (2).

Features

  • NON-STANDARD BLEED FLOW RATES ARE AVAILABLE UPON REQUEST.
  • RAPID RESPONSE.
  • FAIL SAFE DESIGN.
  • STEEL COMPONENTS.

Specifications

CLOSING FLOW TOLERANCE +15% / -0%
OPERATING PRESSURE 3500 PSI
REOPENING DIFFERENTIAL 50 PSI
TEMPERATURE RANGE 250° F TO -40° F

Ordering Information

ModelINLET 1OUTLET 2FLOW RANGELHEX
28950-5021/4-18 NPTF1/4-18 NPTF PORT0.1 TO 4.0 GPM2.700.750
28950-5033/8-18 NPTF3/8-18 NPTF PORT0.5 TO 10.0 GPM2.700.875
28950-5041/2-14 NPTF1/2-14 NPTF PORT1.0 TO 25.0 GPM3.001.125
28950-5063/4-14 NPTF3/4-14 NPTF PORT2.0 TO 40.0 GPM3.201.375
28950-5081-11 1/2 NPTF1-11 1/2 NPTF PORT2.0 TO 50.0 GPM3.801.625

Model

INLET 1

OUTLET 2

FLOW RANGE

L

HEX

Model

INLET 1

OUTLET 2

FLOW RANGE

L

HEX

Model

INLET 1

OUTLET 2

FLOW RANGE

L

HEX

Model

INLET 1

OUTLET 2

FLOW RANGE

L

HEX

Model

INLET 1

OUTLET 2

FLOW RANGE

L

HEX

28950-502View More

1/4-18 NPTF

1/4-18 NPTF PORT

0.1 TO 4.0 GPM

2.70

0.750

28950-503View More

3/8-18 NPTF

3/8-18 NPTF PORT

0.5 TO 10.0 GPM

2.70

0.875

28950-504View More

1/2-14 NPTF

1/2-14 NPTF PORT

1.0 TO 25.0 GPM

3.00

1.125

28950-506View More

3/4-14 NPTF

3/4-14 NPTF PORT

2.0 TO 40.0 GPM

3.20

1.375

28950-508View More

1-11 1/2 NPTF

1-11 1/2 NPTF PORT

2.0 TO 50.0 GPM

3.80

1.625