FLOW LIMITER
101
Safety Valves
28950-500 SERIES
FLOW LIMITER
INLINE •
MALE 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
28950-502 | 1/4-18 NPTF | 1/4-18 NPTF PORT | 0.1 TO 4.0 GPM | 2.70 | 0.750 |
28950-503 | 3/8-18 NPTF | 3/8-18 NPTF PORT | 0.5 TO 10.0 GPM | 2.70 | 0.875 | 28950-504 | 1/2-14 NPTF | 1/2-14 NPTF PORT | 1.0 TO 25.0 GPM | 3.00 | 1.125 | 28950-506 | 3/4-14 NPTF | 3/4-14 NPTF PORT | 2.0 TO 40.0 GPM | 3.20 | 1.375 | 28950-508 | 1-11 1/2 NPTF | 1-11 1/2 NPTF PORT | 2.0 TO 50.0 GPM | 3.80 | 1.625 |
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
Page last updated: 11/16/18, 10:24 PM
This document, as well as all catalogs, price lists and information provided by Vonberg Valve, Inc., is intended to provide product information for further consideration by users having substantial technical expertise due to the variety of operating conditions and applications for these valves, the user, through its own analysis, testing and evaluation, is solely responsible for making the final selection of the products and ensuring that all safety, warning and performance requirements of the application or use are met.
The valves described herein, including without limitation, all component features, specifications, designs, pricing and availability, are subject to change at any time at the sole discretion of vonberg valve, inc. without prior notification.