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 Sewage pump	Founded in Sweden more than 100 years ago, Flygt is a well-known water pump brand, sewage treatment solution provider and water technology compa...
	FLYGT submersible pump agents	PRODUCT FEATURES State-of-the-art wastewater pump with N-technology Sustained high efficiency with energy savings up to 25% Flexible and mod...
	Industrial Pressure Regulators	Thanks for your use or future use of Lapar series of products and your attention to Lapar.LAPAR, headquarted in Milan,Italy,is one of internatio...
	Singel-stage rotary van vacuum pump	Basic Principle The sucking and exhausting valves are usually fitted in the round pump body where there is a centrifugal rotor with three va...
	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...

Все товары поставщика

Похожие товары

	danfoss hydraulic motor supplier	Продавец: Baoding Dingsen Hydraulic Equipment Sales Co., LTD	danfoss hydraulic motor supplier Danfoss Hydraulic Motor – Overview A Danfoss hydra...
	rexroth hydraulic motor	Продавец: Baoding Dingsen Hydraulic Equipment Sales Co., LTD	rexroth hydraulic motor Rexroth Hydraulic Motor – Overview A Rexroth hydraulic moto...
	parker hydraulic pump supplier	Продавец: Baoding Dingsen Hydraulic Equipment Sales Co., LTD	parker hydraulic pump supplier Parker Hydraulic Pump Supplier – Simple Introduction ...
	eaton hydraulic pump remanufactured manufacturer	Продавец: Baoding Dingsen Hydraulic Equipment Sales Co., LTD	eaton hydraulic pump remanufactured manufacturer Remanufactured Eaton Hydraulic Pumps &ndash...
	danfoss hydraulic pump supplier	Продавец: Baoding Dingsen Hydraulic Equipment Sales Co., LTD	danfoss hydraulic pump supplier Danfoss Hydraulic Pump Supplier – Simple Overview A...