Transcription of Safety Relief Valves, Models 6252/6254
1 KUNKLE Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSFEATURES Heavy duty high quality cast iron construction with stainless steel semi-nozzle, trim and disc. Bolted bonnet design for easy maintenance. Seats lapped to optical flatness. Dual control rings offer easy adjustability for precision opening with minimum pre-open or simmer and exact blowdown control. Heavy duty lift lever assembly. All adjustments factory sealed to prevent tampering or disassembly. Each valve tested and inspected for pressure setting and leakage. valves available National Board certified to ASME sections I, VIII and IV, and PED certified for non-hazardous gas. GENERAL APPLICATIONS uitable for use on steam boilers and generators, pressure reducing stations, reciprocating or rotary air/gas compressors and for pressure vessels including tanks, receivers, intercoolers, oil/gas separators and 2017 Emerson.
2 All Rights 17/06 TECHNICAL DATAC onnections: FNPT or flangedTemperature range: -20 to 406 F (-29 to 208 C)Pressure range: 10 to 250 psig ( to barg)Code: ASME I, IV, VIII and PEDCast iron ASME section I steam and section VIII, air, steam and gas UV National Board certified Safety valves including model 6254 to ASME section IV HV , PED certified for non-hazardous gasNOTE1. ASME code valves made from cast iron A126 may not be used in lethal or flammable Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSP arts and materialsMODELS OVERVIEWM odel 6252: Cast iron, enclosed spring, SS trim. Codes: ASME I, VIII and PEDM odel 6254: As model 6252 except certified for ASME code section IV - low pressure steam heating boilers.
3 Set pressure 15 psig ( barg) only. J through P orifice only. Codes: ASME IV and PEDNOTES1. Not shown on SS A313-631 for 'J' Brass B16-H02 for 'J' Applies only to gag option. Gag screw ships with valve, not SS-SA351-C8FM for 'Q' and 'R' J and K orifices use 1 piece lever as shown in diagram. All other orifices use 2 piece design, lever and yoke. Yoke material: iron, A536 65 45 6252 AND 6254 nameMaterial1 BodyCast iron, A126 CL A or B2 Semi nozzleSS, SA351 CF8M3 Warn ring locking screwBrass, B16 H024 Warn ring locking pinSS, A582 TY 4165 GuideBronze, B584 C844006 Guide locking screwBrass, B16 H027 Guide locking pinSS, A582 TY 4168 Stem endSS, A582 TY 4169 Spring stepBrass, B16 H0210 Compression screwBrass, B16 H0211 Lever6 Iron, A536 65 45 1212 Compression screw lock nutSS, SA479 316 SS13 Lifting disc nutSteel, A108 101814 CapIron, A536 65 45 1215 Lifting discSS, SA479 316 SS16 Lever pinSteel, A108 101817 Lever pin washerSteel, A108 101818 Lever cotter pinSteel, A108 101819 StemSS, A582 TY 41620 Cap set screwSteel, A108 101821 BonnetCast iron, A126 CL A or B22 SpringSteel.
4 A229, aluminum coated223 Bonnet boltSteel, A193-B7/194-724 DiscSS, SA479 316 SS525 Warn ring Bronze, B584-C84400326 Gag screw4 Steel, A108 101827 Wire sealLead seal, aluminum wire128 Retainer nutBrass, B16-H0229O-ringEPDM 30 Drainhole NPT3 CAB625*AJGJ1 ( ) FNPT2 ( ) FNPT4 ( )3 ( )18( )40( )625*FJGJ1 ( ) FL2 ( ) FNPT4 ( )3 ( )18( )40( )625*FJHJ2( ) FL2 ( ) FNPT4 ( )3 ( )18( )42( )625*FJJJ2 ( ) FL2 ( ) FNPT4 ( )3 ( )18( )45( )625*AKHK2( ) FNPT3( ) FNPT4 ( )4( )18 ( )43( )625*FKHK2( ) FL3( ) FNPT4 ( )4( )18 ( )52( )625*FKJK2 ( ) FL3( ) FNPT4 ( )4( )18 ( )52( )625*FKKK3( ) FL3( ) FNPT4 ( )4( )18 ( )55( )625*ALJL2 ( ) FNPT4( ) FNPT5 ( )4 13/16( )21 ( )74( )625*FLJL2 ( ) FL4( ) FNPT5 ( )4 13/16( )21 ( )82( )625*FLKL3( ) FL4( ) FNPT5 ( )4 13/16( )21 ( )86( )625*FLML4( ) FL4( ) FNPT5 ( )4 13/16( )21 ( )97( )625*AMKM3( ) FNPT4( ) FNPT5 ( )5 ( )21 11/16( )90( )625*FMKM3( ) FL4( ) FNPT5 ( )5 ( )21 11/16( )100( )625*FMMM4( ) FL4( ) FNPT5 ( )5 ( )21 11/16( )107( )625*KNMN4( ) FL6( ) FL6 ( )7 ( )22 ( )197( )625*KPMP4( ) FL6( ) FL6 ( )7 ( )25 13/16( )197( )625*KQPQ6( ) FL8( ) FL9 ( )10( )39 ( )493( )625*KRPR6( ) FL8( ) FL9 ( )10( )39 ( )507( )KUNKLE Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSNOTES1.
5 Replace asterisk with desired model Inlet flanges are ANSI B16. 1-250#.3. Outlet flanges are ANSI B16. 1-125#.DIMENSIONS Models 6252 AND 6254 Model1 OrificeConnections ANSI standard, in inch (mm)Valve dimensions in inch (mm)Approximate weightInlet2 Outlet3AB Clb(kg)Dimensions are for reference Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSNOTE1. No code stamp or NB on nameplate below 15 psig for model 6252 NON-CODE1 AND ASME SECTION VIII AIR (SCFM), FLOW COEFFICIENT = pressure(psig)Orifice, area in2J( )K( )L( )M( )N( )P( )Q( )R( ) 1050015015233022940635450521139025913069 2 KUNKLE Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSNOTE1.
6 No code stamp or NB on nameplate below barg for model 6252 - metric unitsNON-CODE1 AND ASME SECTION VIII AIR (Nm3/h), FLOW COEFFICIENT = pressure(barg)Orifice, area cm2 J( )K( )L( )M( )N( )P( )Q( )R( )610177525383938497059918807152542208715 2091299046405855705910377179722602320241 0344753496751813811963207203000225273039 0460597646921713550234683398130305043616 7688541102971513726217379613534014864754 9952611484168822923942338403753536783291 0511126711862732262467154541055870910911 4961385920373352855109250445663739890124 8015046221183830855469554808687510670134 6516233238634133159846605160737811451144 5017420256094435464223655511788112231154 3518608273544737768600705863838413011164 2019795290995039972977756215888713792174 0520982308455342277354806566939014572183 8922169325905644581731907270103951613320 3592454436081624919048510079731140117694 2232926918395716853799239110867612407192 5524298292934306274582107993120938013413 2081526268316684655380628116747130100831 4418223762823834042500438667412550114010 7861542423937302073641753534927201342551 5011489164302549832177387915702598765143 0091601219317435270593414741166605151048 1115176317012896184412861936116435406400 6110857160517180135991944730180380864591 5674971169031692711901430320453317414005 6482897098712294817802520015006214583330 2420255066474478128994186779210157092246 4348634399553038779691350401955332201641 3234703642345965554138145914108620428723 0171162447537984479345778784950147131213 0412401781925481395454990460162884411531 7722179525018523264874110651873625369193 1159223230549 NOTE1.
7 No code stamp or NB on nameplate below 15 psig for model 6252 NON-CODE1 AND ASME SECTION VIII STEAM (lb/hr), STEAM COEFFICIENT = pressure(psig)Orifice, area in2J( )K( )L( )M( )N( )P( )Q( )R( )KUNKLE Models 6252/6254 Safety VALVESSAFETY AND Relief Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSNON-CODE1 AND ASME SECTION VIII STEAM (kg/h), STEAM COEFFICIENT = pressure(barg)Orifice, area cm2J( )K( )L( )M( )N( )P( )Q( )R( )Capacities for model 6252 - metric unitsNOTE1. No code stamp or NB on nameplate below barg Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSC apacities for model 6252 NON-CODE AND ASME SECTION I STEAM (lb/hr), STEAM COEFFICIENT = pressure(psig)Orifice, area in2 J( )K( )L( )M( )N( )P( )Q( )R( ) ( )(1004)(1436)(2229)(2813)(3391)(4985)KUN KLE Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTSC apacities for model 6252 - metric unitsCapacities for model 6254 NON-CODE AND ASME SECTION I STEAM (kg/h), STEAM COEFFICIENT = pressure(barg)Orifice, area cm2 J( )K( )L( )M( )N( )P( )Q( )R( )ASME SECTION IV STEAM, lb/hr (kg/h)Set pressurepsig(barg)Orifice, area in2 (cm2 ) ( ) ( ) ( ) ( ) ( ) ( )10 SELECTION GUIDEE xample.
8 6252 FLK01-AS0020 Model62526254 Connection typeA FNPT x FNPTF 250# flange x FNPTK 250# flange x 125# flangeOrificeJ NK PL QM RInlet sizeG 1 ( )H 2 ( )J 2 ( )K 3 ( )M 4 ( )P 6 ( )Variation (01 to 99)01 Plain lever02 Plain lever with gagDesign revisionIndicates non-interchangeable revisionDash (-) if original designValve serviceA Steam ASME section I ( model 6252 only)G Steam ASME section IV model 6254 only ( model 6254 only - 15 barg)K Air ASME Section VIII ( model 6252 only)L Steam ASME section VIII ( model 6252 only)N Non-code air/gasP Non-code steamSpring materialS Steel (plated)Set pressureModel 6252 10 psig [ barg] (0010) to 250 psig [ barg] (0250) model 6254 15 psig [ barg] (0015)KUNKLE Models 6252/6254 Safety VALVESSAFETY AND Relief PRODUCTS
