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Fig. 861 Check Valve Wafer Pattern

Name: Fig. 861 Check Valve Wafer Pattern
Brand: Hattersley
SKU: 66LdMWgeXeuWhyBkE3QELR

Verified by manufacturer 22 days ago

DN50: Fig. 861

Cast iron and ductile iron swing pattern check valve.

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Application

Suitable for installation in vertical and horizontal pipelines.
Suitable for use on group 2 liquids only, as defined by the Pressure Equipment Directive 2014/ 68/ EU.
Suitable for pump duty applications.

Cast iron and ductile iron check valve with a swing pattern, PN16 (Fig. 861) and PN25 (Fig. 866).

Features and benefits:

Check valves permit flow in one direction only and close automatically if flow reverses, depending upon pressure and velocity of flow to perform the opening and closing functions.
Non-Slam design as a result of rubber seat and spring-assisted closure.
EPDM rubber seat to facilitate quiet operation and improve disk seating.
Eyebolt tapped holes in sizes DN200 and above, to fit eyebolts to BS EN 1S0 3226: 2010 (eyebolts not supplied with valve).
Design and construction lends itself to pump duty applications.

Color	Blue Guidance for specification option: Body. Silver Guidance for specification option: Disc.
Material	Cast iron Guidance for specification option: Body. Stainless steel Guidance for specification option: Disc, stop bolt, stem and spring. Steel Aluminium Guidance for specification option: ID plate. Rubber Guidance for specification option: EPDM seat and gasket. Polytetrafluoroethylene (PTFE) washer. Iron Guidance for specification option: Ductile iron body. Show more
Shape	Circle

Uniclass	Pr_65_54_40_13 Irrigation check valvesPrimary
CAWS	S14/325 Backflow prevention devices

Standard	To BS EN 558 series 16.
Pressure rating	PN16.
Connections	Suitable for flanged connection to BS EN 1092-2. Guidance for specification option: PN16 and PN 25. Manufacturer guidance Suitable for mounting in horizontal and vertical pipes (with the flow upwards).

PressureRange	Temperature: -10 to +120°C: PN16.
Dimensions	107 x 66.0 x 10.0 x 43.0 mm. Manufacturer guidance Nominal A x B x F x H.
Weight	1.5 kg.
Inlets/outlets diameter	DN50.
Material (all components)	Body: Cast iron EN-GJL-250, Disc, stop bolt, stem and spring: Stainless steel grade 304, Seat and gasket: EPDM, Washer: PTFE, ID Plate: Anodised aluminium. Guidance for specification option: PN16/ ANSI125: DN50–DN150. Manufacturer guidance PTFE: Polytetrafluoroethylene. EPDM: Ethylene Propylene Diene Monomer EPDM seat and gasket maximum 120ºC.
Flow capacity	44 Kv.
Thread size	- Manufacturer guidance Eyebolt tapping for sizes DN200 to DN600 only. Eyebolt tapping to BS EN 3226: 2010.