Title: Consolidateds 1900 Pressure Relief Valves
1Consolidateds 1900Pressure Relief Valves
- DESIGN
- Superior design for the demanding requirements of
the process market - EXPERIENCE
- Over 100 years of research, engineering,
manufacturing, and application knowledge - 100,000 valves in service
- HEAVY DUTY CONSTRUCTION
- Robust construction allows higher set pressures
- Longer valve life
- Heavy construction can mean fewer valves, a
substantial cost savings - COST EFFECTIVE VALVE MANAGEMENT SERVICES
- Valves designed for lowest life-cycle cost
- Global aftermarket network of Green Tag Service
Centers is industry leader in valve service
management - Industry leading sizing and selection software
- Safety systems evaluation and optimization
Green Tag is a registered trademark of Dresser
Inc.
2CONVENTIONAL
1900-35 BALANCED BELLOWS WITH PISTON BACKUP
BALANCED BELLOWS
1900 P SERIES ASME SEC. I
For applications with excessive build-up or
superimposed back pressure
Designed for Blocked Flow or Accidental Fire
over-pressure protection
For steam or organic vapor service. Available
with open or closed bonnet
For critical applications where bellows backup is
required
3Materials for the Most Demanding Applications
- A WIDER RANGE OF TEMPERATURES
- From -425oF (-254oC) to 1500oF (816oC) Ask for
a copy of our Lloyds Register Low Temp. Test
Certification. - MORE MATERIALS
- Standard options for corrosive services, Monel
Hastelloy, alloy 20, duplex, super duplex,
titanium, zirconium - Custom options available
- INDUSTRY SPECIFIC DESIGNS
- Special design for HF Alky applications.
Developed in conjunction with a leading HF Alky
process system designer
Monel is a registered trademark of INCO
Alloys/Special Metals Hastelloy is a registered
trademark of Haynes International
4A Soft Seat, With Metal BackupAdded Safety for
the Most Critical Condition
SNAP RING REDUCES DAMAGE TO DISC
DURING MAINTENANCE
- A secondary metal seat backup assures sealing
during accidental fire conditions, when flammable
media containment is essential - Soft seats conserve expensive media and reduce
fugitive emissions - Unique design uses operating pressure to assist
the sealing force - Superior soft seat design can be used for set
pressures to 6000 psig (413 Barg). Many other
manufacturers are limited to 1500 psig (103 Barg)
METAL BACKUP
5THERMODISC seat seal Lowers Maintenance Cost
Flexible Lip
5o Angle
System Pressure
Nozzles shape changes during temp. fluctuations
6The Eductor Tube Advantage
EDUCTOR TUBE
- FAST RESPONSE
- Increases the lifting force for faster response
to dangerous system overpressure - SHORTENED SYSTEM UPSET
- Ensures full rated capacity at low overpressure.
Full open sooner and at lower overpressure for
quicker reduction of system upset condition - LESS WASTE OF EXPENSIVE MEDIA
- Provides a uniform response to blow down control
adjustment, conserving your media and saving you
money
FLOW PATH OF FLUID THROUGH THE VALVE