Fisher Control Valve
SEATLESS, HARDSEAT AND UNIT TANDEM
Designed for blow-off service in boiler systems with pressures of 3206 psig
FEATURES
•DesignedaccordingASMEsection1,ASMEB31.1,ASMEB16.34.
•Forboilersystemsupto3206psig.
•Ruggedconstructiontowithstandhighpressureandhighvelocities.
•Excellentresistancetocleaningacidsandwearcausedbyprecipitatedsolids.
Seatless valves
•NoSeat
-willnotscoreorplugwithdirt
-will notleak
•Live-loadedpacking
-willnotleakafterpacking
•Slowopening
-will not rapidly drain boiler drum
Unit tandem valves
•Combinationofhardseatandseatlessvalvesinasinglebody
-eliminates pipejoints
-reduces potentialleaks
-fitsintoaconfinedspace
Hardseat valves
•Stellite seatfaces
-resistswear
provideslongservicelife
GENERAL APPLICATIONof
Blow-offserviceinboilersystemstoremovedirt,sedimentandscaleaswellasmaintainboiler levelsurge.
Sizerange:NPS1,1¼,1½,2,2½
TECHNICAL DATA
[DN25,32,40,50,65]
PressureRating:Up to 3206psiConnection:Flanged, Socketweld, ButtweldMaterials:CastIron,CarbonSteel
GENERAL DESCRIPTIONof
Basicrequirementsforthedesignanduseof blow-offvalvesareestablishedbytheASMEPowerBoilerCode,Sectionl.Thegeneralformofavalve,thematerialsofitsconstruction,allowableboilerpressures,andtheinstallationofthevalvearealldeterminedbythecode.
Yarway blow-off valves are designed inconformance with all coderequirements(ASMESectionl,ASMEB31.1,ASMEB16.34).
Becausetheprimarypurposeofablow-off valveisremovalofdirt,sedimentandscale,theboilercoderequiresthatvalveswhichhavedamsorpocketsinwhichsedimentcanaccumulatecannotbeusedinblow-offservice.Thismeansthatordinaryglobevalvescannotbeusedasblow-offvalves.
are especially designed for the punishment of blow-off service in boilersystems with pressures of 3206 psi.
Theruggedconstructionofthesecansuccessfully withstand the combination of problemsinherentintheservice-aserviceinwhich high pressures result in high velocities whichcancausewiredrawingandcavitationofmetalsurfaces.
Thevalvesmustalsowithstandthecorrosiveenvironmentcreatedbyacidcleaningofboilers,and the potential wear problems caused byprecipitatedsolids.
Thevalvesarealsohelpfulinmaintainingboilerlevel surge within desirable limits during quickstartupofhighpressuresystems.
TwobroadcategoriesofYarwayblow-offvalvesareavailable;thosethatoperateonaslidingprincipleandthosethatoperateonaseat-and-discprinciple.
在线联系供应商
Other supplier products
 |
2BE Liquid ring vacuum pump | 2BE CONSTRUCTION TYPE The 2BE liquid ring are of uncomplicated and robust construction with the following particular features: non-polluting... |
 |
liquid ring vacuum pump manufacturer | Available in both cast iron and stainless steel construction, the 2BV family provides capacities up the 600m3/h(360CFM) in a compact monoblock d... |
 |
Pressure Regulating Valve price | Specificationsof This section lists the specifications for the MR95 Series regulators. Factory specification such as type, maximuminlet press... |
 |
KSB Centrifugal pumps | Everything for your project: the KSB Product Catalogue A unique range of pumps, and services Our comprehensive portfolio has the ideal soluti... |
 |
2BV Liquid ring vacuum pump | Available in both cast iron and stainless steel construction, the 2BV family provides capacities up the 600m3/h(360CFM) in a compact monobloc... |
Same products
 |
China Wholesale High Performance Butterfly Valve Supplier | 卖方: Tianjin Tanggu TWT Valve Co., Ltd. | High Performance Butterfly Valve Definition A high performance butterfly valveis a type of valve... |
 |
China High Quality Ductile Iron Double Eccentric Butterfly Valve Pricelist | 卖方: Tianjin Tanggu TWT Valve Co., Ltd. | Product Description Product Name ductile iron double eccentric butterfly valve ... |
 |
China Wholesale AWWA C509 Gate Valve Factory | 卖方: Tianjin Tanggu TWT Valve Co., Ltd. | Product Description Product Name AWWA C509 gate valve Manual Manu... |
 |
Wholesale Resilient Seat Seal Groove Rising Stem Gate Valve Quotes | 卖方: Tianjin Tanggu TWT Valve Co., Ltd. | Product Parameters Fluid medium Water, oil, gas, etc. Temperature Rang... |
 |
China OEM Steel Gate Valve Series For Sale | 卖方: Tianjin Tanggu TWT Valve Co., Ltd. | Product Description As a China industrial valves manufacturer, TWT introduces Steel Gate Valve S... |
