The valve is operated by handwheel (ON 13 3110), chainwheel
(ON 13 3130) or from a stand (ON 13 3140 and ON 13 3142). DN 15 to
DN 80 valves can be operated by a direct-acting electric actuator. Type of
electric actuator and maximum pressure drop is selected by the supplier.
Valve with regulating disc (for approximate
regulation) for water, non-aggressive liquids,
steam, oil and gases for service pressures and
Manually operated valve is yoke type.
Electrically operated valve is bonnet type.
Closing disc fits into a rolled seat in the body.
Stem is sealed with gland packing in the
bonnet. Flow direction in the valve is from
under the disc.
Connecting and face-to-face dimensions
Face-to-face dimensions as per ÈSN EN 558,
DIN 3202 F1.
Flange connecting dimensions as per
ÈSN 13 1060 and ÈSN 13 1061, DIN2501.
Flange faces as per DIN2526, Form C.
Basic connecting and face-to-face dimensions
are given in the table.
Body, bonnet, gland flange grey cast iron
Stem stainless steel (13Cr)
Disc stainless steel (13Cr)
Gland packing asbestos-free fibre
The valve is tested as per ÈSN 13 3060, part 2,
The valve can be installed in horizontal or
vertical Piping depending on the flow
direction. Electrically actuated valves should
be installed in horizontal piping with the
actuator upwards above the valve. In other
positions the actuator must be supported or
attached to a hinge.