ASME Standard B16.34entitled “Steel Valves” is thedocument most uniformlyaccepted by end-users,engineering contractors,fabricators and valvemanufacturers as the basisfor valve design, valvetesting and valveperformance.

In 1988, the Scope of ASMEB16.34 was changed toinclude threaded-end andweld-end valves in additionto flanged-end valves.

Today, the vast majority offlanged-end ball valves soldin the United States meet or

exceed the requirements ofASME B16.34. In fact, fewend-user customers wouldconsider specifying orpurchasing a flanged-endball valve that did notcomply with ASME B16.34 asa minimum requirement.

Although ASME B16.34 hasincluded threaded-end ballvalves for over 13 years,over 90% of the threadedball valves currently used inthe construction andmaintenance of processfacilities do not comply withthis universally acceptedstandard……

A Word aboutValve Safetyand Complianceto NationalStandards . . .

A Word aboutValve Safetyand Complianceto NationalStandards . . .

# QUAD-ASME 503

ASME B31.1 standardentitled “Power Piping” andASME B31.3 standardentitled “Process Piping” arethe standards used byvirtually all powercompanies, chemicalcompanies and petroleumrefiners as the guideline forthe selection of material anddesign of piping for powerplants, chemical plants andrefineries. Both of thesestandards refer the user toASME B16.34 for selectionof VALVES.

What exactly doescompliance to ASMEB16.34 mean to theend-user or engineeringcontractor?

� Wall thicknesses of bodyand other pressure-containing componentsmeet ASME B16.34specified minimum valuesfor each pressure class.

� NPT and Socket Weld endconnections comply withASME B1.20.1 or ASMEB16.11.

What is the significance of ASME B16.34 compliance?

� Body and shell materialscomply with ASME andASTM material standardsfor chemistry and strength.

� Body and all shellmaterials are heat-treatedto insure proper grainstructure, corrosionresistance and hardness.

� Stems will be “internallyloaded and blowout proof.”

� All bolting will be ASTMgrade with maximumapplied stress controlled byB16.34.

� Each Valve is shell testedat 150% of rated pressurefor a specified test timeduration.

� Each Valve is tested forseat leakage in bothdirections for a specifiedtest time duration.

� Each Valve is permanentlytagged with materials ofconstruction, operatinglimits, and name ofmanufacturer.

Without complete complianceto B16.34, there is noassurance that valves meetany of these importantrequirements.

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SB-SS & CS Series is a Seal-Welded ball valve eliminating thepossibility of body/tail piece unthreading. The SB-SS/CS is in fullcompliance with ASME B16.34 Class 900, as well as: NACE MR01-75-Rev 2000; API 607 4th Edition Fire Safe Standard; ISO 10497Fire Safe Standard; ISO 5211 and API 608 Ball Valve Standard (seeback page).

2160WOG (CF8M) 2220WOG (WCB)

S3-SS & CS Series is also of Seal-Welded construction, available in1/4”-2” sizes, and is in full compliance with: ASME B16.34 Class1500; NACE MR01-75 Rev 2000; API 607 4th Edition Fire SafeStandard; ISO 10497 Fire Safe Standard; ISO 5211 and API 608Ball Valve Standard (see back page).

3600WOG (CF8M) 3705WOG (WCB)

S6-SS & CS Series is a Seal-Welded construction ball valve in 1/4”-2” sizes in full compliance with ASME B16.34 Class 2500, as well as:NACE MR01-75 Rev 2000; API 607 4th Edition Fire Safe Standard;ISO10497 Fire Safe Standard; ISO 5211 and API 608 Ball ValveStandard (see back page). Standard PEEK seats extend temperaturerange, also available with weld ends.

6000WOG (CF8M) 6170WOG (WCB)

Class900

S10-SS Series is an extreme-pressure seal-welded construction ballvalve available in 1/4”, 3/8” and 1/2” NPT female end connections,1/2” socket-weld end connections, and 9/16” medium pressurethreaded and coned tubing connections. The S10-SS is in fullcompliance with ASME B16.34 Class 4500, API 608, NACE MR01-75Rev 2000, and API 607 4th Edition Fire Testing standard. PEEK seatsprovide high temperature service capability.

10,800WOG (CF8M)

Class4500

Quadrant’s M2-CS and M2-SS three piece, 8-bolt ball valves areavailable in 1/4” through 2-1/2” sizes in both WCB carbon steel andCF8M stainless steel construction. Fully compliant with ASME B16.34Class 800, as well as: API 608, NACE MR01-75 Rev 2000, API 6074th Edition, ISO 10497, and ISO 5211. Ideal in applicationsrequiring body assembly removal after installation. Extended socket-weld ends allow welding into system without disassembly.

1920WOG (CF8M) 1973WOG (WCB)

Class800

Class1500

Class2500

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At Quadrant Valve & Actuator, we have practical, safe, and costeffective solutions to the problem of ASME B16.34 threaded valvecompliance … in fact we have five:

QUADRANT VALVE & ACTUATOR, LLC • 108 BLUFFWOOD DR. • BROUSSARD, LA 70518337-837-8650 • FAX 337-837-8651 • TOLL FREE 1-877-625-5858

www.QUADRANTVALVE.com

What is the significance of API 608 compliance?

The Quadrant Ball Valvesshown on the previous pagealso comply with API 608Ball Valve Standard. Thisdocument was developed bythe Committee on RefiningEquipment of API in 1989 asthe standard to be used by“downstream” API refinersand chemical companies forselection and approval offlanged, weld-end &threaded ball valves. API 608 is actually anadditional set ofrequirements beyond thosein ASME B16.34, and ASMEB16.34 compliance is aprerequisite.

Some of the additionalrequirements for a valve tocomply with API 608 include:

• Maximum Operating Loadon handles or handwheelsto be limited to 80 Lbs.

• Stem torsional strengthmust be at least twice themaximum operating torque(Safety factor=2).

• Torsional failure of stemmust be external topressure-containingenvelope and above stempacking.

• PTFE and RPTFE seats andseals must meet minimumpressure/temperaturerequirements.

• Full, “Regular” and ReducedPort ball valves must meetminimum bore diameterrequirements.

• “Hollow balls,” which createturbulent flow and reducedCV factors, are disallowed.

• Stem must be electrically“grounded” to body.

Quadrant’s SB-SS, S3 and S6Ball Valves provide you withthe confidence ofcompliance to all of theseindustry standards whilereducing your valve costs. Formore information, please visitour website atwww.quadrantvalve.com.