YARWAY BLOW-OFF VALVES

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.

Другие товары поставщика

	Flygt blender	Founded in Sweden more than 100 years ago, Flygt is a well-known water pump brand, sewage treatment solution provider and water technology co...
	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...
	Flame Arresters	The Enardo Detonation represents thebest value in flame arrestor protection. They prevent flamepropagation by absorbing and dissipating heat us...
	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...
	Fisher Control Valve	SEATLESS, HARDSEAT AND UNIT TANDEM Designed for blow-off service in boiler systems with pressures of 3206 psig FEATURES •DesignedaccordingA...

Все товары поставщика

Похожие товары

	AUTO Self-Priming Pump	Продавец: Zhejiang Huaqi Information Technology Co., LTD	Automatic Priming: Our self-priming pump is equipped with an automatic priming system that elimin...
	JS1100 Self-Priming Pump	Продавец: Zhejiang Huaqi Information Technology Co., LTD	Stainless steel pump body JS series self-priming electric pumps. Equipped with a waterproof glug ...
	C150-1.2series High Flow Multi-Stage Centrifugal Blower/Vacuum Pump	Продавец: Greentech International (Zhangqiu) Co., Ltd	Greentech International (Zhangqiu) Co., Ltdis the professional blower supplier.Multistage Centrif...
	C125-1.6 Series High Flow Multi-Stage Centrifugal Blower /Blower	Продавец: Greentech International (Zhangqiu) Co., Ltd	Greentech International (Zhangqiu) Co., Ltdis the professional blower supplier.Multistage Centrif...
	C125-1.4 Series High Flow Multi-Stage Centrifugal Blower /Blower	Продавец: Greentech International (Zhangqiu) Co., Ltd	Features of Centrifugal Blower: 1. The profile curve of impeller is advanced. As a result, the...