Product Overview

For Fire Protection Applications
ES-408OSYRW
Series 408-OSYRW
Outside Stem and Yoke, Resilient
Wedge, Flanged Gate Valves
Sizes 2
1
⁄2" – 12" (65 – 300mm) – Epoxy Coated
Series 408-OSYRW Outside Stem and Yoke Resilient Wedge
Flanged Gate Valves are available in sizes 2
1
/2"-12" (65 -
300mm). The valve body is fusion bonded powder coated cast
iron and is operated by a handwheel. The resilient wedge disc
design offers positive seating and resistance against high differ-
ential pressure. Series 408-OSYRW is best suited for service in
either the fully open or closed position. It is also suitable for use
as a throttling valve. This series is recommended for fire main
shutoff and distribution service.
Features
•ASTMA126ClassBCastIron
•Fullportflow,lowheadloss
•Fusionbondedcoating,internalandexternal
•Encapsulatedresilientwedge
•Easyin-lineservice
•Replaceabledisc
•Bosstappedandplugged
•MSS-SP-70conformance
Specifications
ValveshallbemanufacturedoutofASTMA126ClassBcast
ironandcomplywithMSS-SP-70.Valveshallbepressure
ratedto250psi(17bar)CWPnon-shockandhaveflanged
ends.Valveshallhaveanoutsidestemandyoke,fullportflow,
replaceable disc and fusion bonded coating. Valve shall be a
Watts Series 408-OSYRW.
Approvals
AWWA C509
Listed
Approved
Standards
Face-to-face dimensionsofthevalvescomplywiththeAmerican
Standardforface-to-facedimensions(ANSIB16.10)forClass
125 cast iron flanged valves.
End Flanges: The dimensions and drilling of end flanges conform
totheAmericancastironflangestandard,Class125(ANSI
B16.1).Theflangesareflatfacedandsmoothfinished.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
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