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Safety Relief Valves • Safety Relief Valve Sizing ...

Safety Relief Valves Safety Relief Valve Sizing Crossover Chart ASME Code DESIGNER S GUIDESAFETY Relief VALVESPENCE ENGINEERING COMPANY has a policy of continuous product research and improvement and reserves the right to changedesign and specifications without notice. Responsibility for typographical errors is specifically ENGINEERING COMPANY is a member of the Fluid Controls is the philosophy of the Spence Engineering Company that, to win and be deserving of the trust of our customers, we must be ever mindful of and totally dedicated to quality; in all that we do; at every level of our 1 -SPENCE SAFETYRELIEFVALVEDESIGNER SGUIDEVALVESDESIGNEXCERPTS FROMASME CODE- 2 -NOTES:- 3 -SPENCEENGINEERINGCOMPANY, Spence Engineering Company was founded in 1926 by Paulsen Spence in Walden,New York. Paulsen Spence developed the original patent for the normally closed externalpilot operated packless pressure regulator.

Safety Relief Valves • Safety Relief Valve Sizing • Crossover Chart • ASME Code • DESIGNER’S GUIDE SAFETY RELIEF VALVE

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Transcription of Safety Relief Valves • Safety Relief Valve Sizing ...

1 Safety Relief Valves Safety Relief Valve Sizing Crossover Chart ASME Code DESIGNER S GUIDESAFETY Relief VALVESPENCE ENGINEERING COMPANY has a policy of continuous product research and improvement and reserves the right to changedesign and specifications without notice. Responsibility for typographical errors is specifically ENGINEERING COMPANY is a member of the Fluid Controls is the philosophy of the Spence Engineering Company that, to win and be deserving of the trust of our customers, we must be ever mindful of and totally dedicated to quality; in all that we do; at every level of our 1 -SPENCE SAFETYRELIEFVALVEDESIGNER SGUIDEVALVESDESIGNEXCERPTS FROMASME CODE- 2 -NOTES:- 3 -SPENCEENGINEERINGCOMPANY, Spence Engineering Company was founded in 1926 by Paulsen Spence in Walden,New York. Paulsen Spence developed the original patent for the normally closed externalpilot operated packless pressure regulator.

2 This design is the basis for the products offeredtoday. This technology offers the maximum in application and selection flexibility. Spencestands alone in their ability to produce regulators up to 12 inches in cast iron and cast pilots are used to control pressure, temperature, differential pressure or back pressureeither mechanically or with a pneumatic pilot. Spence Engineering is a widely recognized leader in the steam regulator and flow controlfield. Spence regulators are used extensively for heating systems in buildings, institutionsand district heating systems as well as major industrial 1984, Spence Engineering was acquired by Watts Industries. The company continuedto grow and develop new fluid control and steam specialty products. A new line of pneumaticcontrol Valves was introduced in 1986. In 1989, a range of self contained temperature regu-lators was added to the line to meet the demand for an economical temperature was an active year, with Spence becoming certified by the ASME for the assembly andsetting of Safety Relief Valves manufactured by their sister Watts company in Canada.

3 Spencewas also instrumental in the acquisition and management of the Nicholson Steam TrapCompany. In 1994, Nicholson was integrated into the Spence continued it s product development program with the introduction of variable orifice steam traps and pressure operated condensate pumps. In 1996, Watts moved the manufacturing responsibility for Safety Valves to the Spence Engineering in Walden, New York. Spence is now an ASME certified manufacturer of bronze and iron Safety Relief Industries, Inc. split in 1999 and Spence Engineering Company became a divisionof the newly formed corporation, Circor Engineering continues to focus their attention on providing single source steamspecialty products for regulating and control of steam and fluids for the institutional andindustrial marketplace. Their growth efforts are to expand the already comprehensiveproduct capabilities to reach new developing more information on Spence Engineering Co.

4 , visit our website reach us via e-mail at 4 -THESPENCEADVANTAGE ISSERVICELOCALTECHNICALSUPPORTS pence Engineering has a network of technically trained Representatives around the world. TheseRepresentatives can direct you to local inventory of our products for fast, fast service. They can alsohelp you in the selection and Sizing of Regulators, Pilots, Desuperheaters and Noise offer a regular schedule of workshops covering various technical issues in our state of the art ValveTechnology Training Center. We can also schedule customized training sessions to suit your particularneeds. ENGINEERING seminars provide the engineer with the skills of regulator selectionand seminar will provide you with all the information you need to serveyour personnel will receive hands-on training in selection,installation, operation, maintenance and is well equipped to provide product to our customers around the world.

5 We regularly ship ourproducts to all parts of the world. Our experienced international sales group can meet the transportand documentation requirements of our international customers with ease. Our network of InternationalTechnical Sales Representatives will also be able to provide you with product from local offers a very comprehensive line of specialty options to enhance and optimize Valve can tailor custom solutions for your most unique process applications. Call us for 5 -Spence Engineering Company, Inc. History ..3 The Spence Advantage is Service ..4 TABLE OF CONTENTS ..5 Spence Safety Valve Selection Chart ..6 Spence/Kunkle Competitive Crossover Chart ..7 VALVESF igure 31 / 41 Bronze Series ..10 Figure 31 / 41 Cast Iron Series ..18 Figure 800 Series ..24 Figure 10 Series ..36 Figure 15 Series ..38 Figure 15V Series ..40 Figure 50 Series ..42 Drip Pan Elbow ..44 DESIGNB asics of Relief Ring Guidelines.

6 50 Pipe Data Table ..52 Capacity of Saturated Steam Table ..53 Safety Valve Sizing By Computation ..54 Table E1 Spence Valve Coefficients (Kd) ..55 Table E2 Typical Properties of Gases ..55 Table E3 Gas Constant (C) ..56 Table E4 Superheat Correction Factor (Ksh) ..57 Graph E5 Superimposed (constant) Backpressure Sizing Factor (Kb) ..58 Graph E6 Superimposed or Variable Backpressure Sizing Factor (Kb) ..59 Graph E7 Capacity Correction Factors due to Overpressure ..59 Graph E8 Capacity Correction Factor due to Viscosity ..60 Graph E9 Capacity Correction Factor due to Backpressure (Kw) ..60 Spence SRV Testing Specifications ..61 Summary of ASME Codes & Standards ..62 Comparison of ASME Section I to Section VIII ..63 Installation, Maintenance & Troubleshooting Guidelines ..64 Planning Main Valve Installation ..67 Main Valve Sizing By Computation ..68 Regulator Cv Data ..69 Control Valve Cv Data ..70 EXCERPTS FROMASME CODEE xcerpts from ASME Section I.

7 73 Excerpts from ASME Section IV ..91 Excerpts from ASME Section VIII ..101 TABLE OF CONTENTSREADY TO START?The best way to make a selection is to contact your local Spence Engineering Technical Sales Representative. Our network offactory trained Representatives will offer you a choice of solutions for your application utilizing our Computer Valve Sizing the name and number of your local Spence Representative, call our Hotline at 1-800-398-2493 or visit our website FROMASME CODE- 6 -VALVESSELECTION CHART* Pressure and temperature ranges may vary, depending upon Valve size, material, etc. Please consult the appropriate product catalog for specific data.+ASME does not certify Valves below 15 PSIG. Consult Factory for PED Min/Max*Min/Max*ConnectionsFluidO2 ASMEV alve SeriesSizesSet PressuresTemperaturesCleaning Section+PED Pageinches (mm)PSIG (barg) F ( C)ThreadedFlanged SteamAir GasLiquid Vacuum103/4 - 35 - 15-10 to 250 XXIV(20 - 80)(.)

8 3 - 1)(-29 to 121)15C/15LC3/4 - 35 - 15-20 to 400 XXXNone(20 - 80)(.3 - 1)(-29 to 204)15A/15LA3/4 - 35 - 15-20 to 400 XXXNone(20 - 80)(.3 - 1)(-29 to 204)15V/15LV3/4 - 35 - 30 in HG-20 to 400 XXNone(20 - 80)( - mbarg)(-29 to 204)31/33 Bronze 1/2 - 2-1/25 - 250-20 to 406 XXI (15 - 65)(.3 - )(-29 to 208)32 Bronze1/2 - 2-1/25 - 300-20 to 422 XXI (15 - 65)(.3 - )(-29 to 216)41/43 Bronze1/2 - 2-1/25 - 250-20 to 406 XXVIII (15 - 65)(.3 - )(-29 to 208)42 Bronze1/2 - 2-1/25 - 300-20 to 422 XXVIII (15 - 65)(.3 - )(-29 to 216)41A/43A Bronze1/2 - 2-1/25 - 250-20 to 406 XXVIII (15 - 65)(.3 - )(-29 to 208)42A Bronze1/2 - 2-1/25 - 300-20 to 422 XXVIII (15 - 65)(.3 - )(-29 to 216)41AA Bronze1/2 - 3/45 - 250-20 to 406 XXXVIII (15 - 20)(.3 - )(-29 to 208)42AA Bronze1/2 - 3/45 - 300-20 to 422 XXXVIII (15 - 20)(.3 - )(-29 to 216)41AT/43AT Bronze1/2 - 25 - 250-20 to 406 XXVIII (15 - 50)(.3 - )(-29 to 208)42AT Bronze1/2 - 25 - 300-20 to 422 XXVIII (15 - 50)(.

9 3 - )(-29 to 216)31/32 Cast Iron 1-1/2 - 65 - 250-20 to 406 XXXI(40 - 150)(.3 - )(-29 to 208)41/42 Cast Iron 1-1/2 - 65 - 250-20 to 406 XXXVIII(40 - 150)(.3 - )(-29 to 208)41A/42A Cast Iron 1-1/2 - 65 - 250-20 to 406 XXXVIII(40 - 150)(.3 - )(-29 to 208)810/812/814/8161/2 - 1-1/25 - 250-20 to 406(15 - 40)(.3 - )(-29 to 208)XXXXXXVIII 10 to 30 in HG( to mbarg)820/822/824/8261/2 - 1-1/25 - 900 *-20 to 422(15 - 40)(.3 - )(-29 to 216)XXXXXXVIII 10 to 30 in HG( to mbarg)860/862/864/8661/2 - 1-1/25 - 900 *-20 to 422(15 - 40)(.3 - )(-29 to 216)XXXXXXVIII 10 to 30 in HG( to mbarg)50/52210 -30-20 to 225 XXNone(50)(.7 - )(-29 to 107)51/53210 -30-20 to 225 XXNone(50)(.7 - )(-29 to 107)710/7151/2 - 210-400-423 - 400 XXX XVIII RXSO(15 - 50)(.7 - )(-252 - 204)760/7651/2 - 110-400-423 - 400 XXX XVIII RXSO-S(15 - 25)(.7 - )(-252 - 204)7701/2 - 210-3000 - 300 XXXNoneRSL(15 - 50)(.7 - )(-17 - 148)7751/2 - 210-3000 - 300 XXXNoneRLS-S(15 - 50)(.

10 7 - )(-17 - 148)SPENCE Safety Valve SELECTION CHART36383840101010101010101010101818182 424244242- 7 -VALVESSPENCE/KUNCKLECROSSOVER CHARTSPENCE/KUNKLE COMPETITIVE CROSSOVER CHARTWHY CHOOSE SPENCE Safety AND Relief Valves ?1) Spence Engineering sets and tests all Valves in accordance with the applicable ASME code and API 527. Most competitivevalves do not meet API 527, leading to premature simmering and leakage causing system problems and premature Valve ) Spence Engineering Safety and Relief Valves are designed and manufactured with a more rugged body/bonnet design thanmost competitive Valves . This exceptionally rugged design withstands excessive piping strains that often lead to Valve Series 6121 Same as 6182 with Teflon disc insert56121DC43 ATCDE6121ED43 ATEDE6121FE43 ATFEE6121GF43 ATGFE6121HG43 ATHGE6121JH43 ATJHEM odel 6130 Same as 6182 with SS nozzle and base6130DC42 ATCDE6130ED42 ATEDE6130FE42 ATFEE6130GF42 ATGFE6130HG42 ATHGE6130JH42 ATJHEM odel 6252(Formerly 252)Cast Iron withbronze/brass trim16252 AJG__JGB6252 FJG__JGC6252 AKH__KHB6252 FKH__KHC6252 FKJ__KJC6252 FKK__KKC6252 ALJ__LJB6252 FLJ__LJC6252 FLK__LKC6252 AMK__MKB6252 FMK__MKC6252 KNM__NMD6252 KPM__PMD6252 KQP__QPD6252 KRP__RPDM odel 6253(Formerly 253)Same as 6252 with SS semi nozzleand disc46253 AJG__JGB6253 FJG__JGC6253 AKH__KHB6253 FKH__KHC6253 FKJ__KJC6253 FKK__KKC6253 ALJ__LJB6253 FLJ__LJC6253 FLK__LKC6253 AMK __MKB6253 FMK __MKC6253 KNM __NMD6253 KPM __PMD6253 KQP__QPD6253 KRP__RPD6252 Series(Formerly 252)


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