Buying Guide

91
NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: [phone] • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: [phone]
www.nibco.com
Visit our website for the most current information.
www.nibco.com
AHEAD OF THE FLOW
®
Revised 7/20/2018
Construction Features
Features and Benefits
Flanges NIBCO
®
Ductile Iron Valves come standard ASME B16.42 Class 150 flanges and the same end-
to-end dimensions as Class 125 iron or Class 150 steel valves. Thus Ductile Iron valves can
easily replace cast iron or steel valves. NIBCO also offers PN10/16 flanges per BS 4504 and
compliant to BS 5150 face-to-face dimensions.
Trim Bronze ASTM B584, 316 Stainless Steel
Test Pressures All NIBCO Ductile Iron Valves are tested to MSS requirements in our ISO 9002 quality
certified manufacturing plant in Blytheville, Arkansas.
Color NIBCO Ductile Iron valves are painted green in compliance with API 604.
Strength Ductile Iron is a very strong material when compared to cast iron and comparable to cast steel.
Ductile Iron has a higher yield strength than cast steel 40K vs. 30K. The strength of Ductile Iron
when compared to cast iron is overwhelming. Ductile Iron tensile strength is 60K vs Cast Iron at
31K. Ductile Iron has yield strength of 40K and cast iron has none.
Corrosion Resistance Ductile Iron has a corrosion and oxidation resistance in most cases that surpasses cast steel and
is slightly better than cast iron. Oxide penetration can severely affect the strength and perfor-
mance of valves.
Low Transition Temps Ferrous metals are subject to brittle fractures with severe temperature changes. The chemical
composition of NIBCO’s Ductile Iron provides transition temperatures to -20°F. This property is
important if physical shock loading is present in cold weather applications.
Cost Effective These unique characteristics make Ductile Iron a cost-effective option for 150 psi steam service
as well as hydrocarbon processing up to 650°F/343°C.
Applications
Steam Service Ductile Iron gate, globe and check valves are excellent choices for 150 psi steam service.
Available with ASTM B584 bronze trim and CF8M SS trim.
Hydrocarbon Service Ductile Iron is an acceptable substitute for cast steel in a wide range of processing services both
on the production and refining side up to 650°F/343°C.
General Service Ductile Iron can substitute for standard Class 125 cast iron where there may be concerns with
potential stresses and a stronger material is desired, i.e. in situations of unusual pipe movement
due to the system or external forces, such as cold weather, earthquakes, etc.
Ductile Iron may be substituted for Class 250 cast iron for intermediate pressure services using
steel Class 150 flanges up to 285 psi CWP. (Should save on valve and flange costs.)
Ductile Iron is a good choice for general service, fire protection and Hi-rise applications.
Has a higher application temperature than PTFE seated flanged ball valves.
Marine Service For shipboard application and tanker piping, many marine agencies recommend the use of Ductile
Iron Valves because of its resistance to shock, vibration and superior corrosion-resistant proper-
ties. Approved by DOT and Certificate of Approval from Lloyds Register of Shipping.