Viking Johnson - Model 604 -MultiPort Plug Valve
The MultiPort Plug Valve is a 3-way, non-lubricated diverter valve. It features an internally epoxy coated body and an elastomer coated plug face. The valve operates without the need for lifting prior to turning the plug. Valves are furnished with replaceable sleeve type bearings which are of sintered, oil impregnated austenitic stainless steel. Valve shaft seals are ‘U’ cup, self adjusting and replaceable without removing the bonnet from the valve. The valve bonnet seal is an ‘O’ ring allowing metal to metal body/ bonnet contact.
Wrench operated valves DN50 - DN200, are capable of being converted to worm gear or automated operation without removing the bonnet or plug from the valve. All wrench operated valves are equipped with a 50mm square drive for use with removable levers or a waterworks T-key. Worm gear operators, where required, are of a heavy duty construction with a ductile iron quadrant supported by oil impregnated bronze bearings. The worm gear and shaft are manufactured from hardened steel and supported in roller bearings.
- Valves up to and including DN200 are supplied with a 50mm square drive for use with optional removable levers
- Gear or actuator operation is available
- Internally epoxy coated
- Elastomer faced plug
- Flanges drilled to BS EN 1092 PN16
- Variety of flange drillings available
- Nitrile faced plug
- Optional Neoprene faced plug
- Flange drillings: PN10, PN16, ANSI
Valve body casting uses pressure moulding techniques for consistent quality and precision. Flange diameter and thickness conform to ANSI B 16.1 Class 125. Flange drillings PN10, PN16, ANSI
SeatThe Multiport valve employs a corrosion and abrasion resistant epoxy seat on all sizes
Stem SealMultiple self-adjusting “U” cup seals are used to prevent stem leakage and provide years of trouble free service
BearingsThe plug rotates in oil impregnated sintered 316 grade stainless steel bearings located in both the body and bonnet
Plugsupported on integral trunnions, the solid ductile iron tapered plug is faced with any of a variety of elastomers that are vulcanized in place and ground to size. Plug position and shut off is controlled by use of adjustment gland attached to the plug shaft
Bonnet SealSuperior ‘O’ ring sealing with metal/metal contact means lower stresses compared to traditional compression gaskets
FlowThe wide port design with streamlined internal contours allows for a high capacity flow in the full open position reducing turbulence and pressure drop through the valve
Position IndicationActive port indication is standard on all wrench operated and gear operated millcentric Multiport valves