Duvalco Valves
Butterfly Valve
NSJ-Series (NSJ)
The NSJ has an Eccentric Design. The dex series have a double eccentric design. Seat ring exchange is extremely simple and does not require removal of the actuator. 100% tight shutt off. Bi-directional (100% tight shut of up to 10 bar). The preferred direction of flow is indicated on the body.
Mono Flange (MONO)
Mono Flange Butterfly Valve with Centric Disc and Bonded Liner. 100% bi-directional bubble tight shut off.
Applicable for all kinds of industries, especially shipbuilding, offshore, petrochemical, heavy industry, water treatment and civil engineering.
LUG-Type (LT)
Full water Lug Type Butterfly Valve with Centric Disc and Bonded Liner. 100% bi-directional bubble tight shut off.
Applicable for all kinds of industries, especially shipbuilding, offshore, petrochemical, heavy industry, water treatment and civil engineering.
Wafer-Type (MSJ)
Wafer Type Butterfly Valve, Semi Lug, with Centric Disc and Bonded Liner. 100% bi-directional bubble tight shut off.
Applicable for all kinds of industries, especially shipbuilding, offshore, petrochemical, heavy industry, water treatment and civil engineering.
Double Flange (BA)
Double Flange Type Butterfly Valve with Centric Disc and Bonded Liner. 100% bi-directional bubble tight shut off.
Applicable for all kinds of industries, especially shipbuilding, offshore, petrochemical, heavy industry, water treatment and civil engineering.
Gate Valves
SF Resilient Seated Gate Valve (SFGV)
DN50 to DN600
- Gate encapsulated with rubber
- Rubber type can be selected according to the applicable industry
- Allows pigging
Duvalco SF range of soft seated gate valves has been fully updated to suit our customers’ needs today. Encapsulated and epoxy coating ensure corrosion-free operation with low operating torque.
MF Metal Seated Gate Valve (MFGV)
1. Available in both rising and non-rising spindle designs
2. Can be tailored made to suit a wide range of applications
Duvalco MF range of metal seated gate valves are available in rising and non-rising spindle designs and with flange connection t suit customer’s requirement.
Check Valve
Free-Acting Swing Check ValveFree-Acting Swing Check Valve
DN150 to DN1200
- Non slam design in all sizes up to DN1200 without the need for dampers or levers/weights
- Double or triple doors designs used for sizes DN500 and above
Duvalco Check Valve Non-Slam design is achieved through a carefully balanced relationship between door weight and angle, providing minimal maintenance and avoiding damage to other pipework components. The absence of weights or dampers minimizes the risk of shaft damage and leakage. All sizes are available with metal seating of the door. Sizes up to DN300 are also available with the door encapsulated in EPDM or NBR rubber. Overall design generally in accordance to BS 5153 / EN12334, EN1074-1, EN1074-3. Flange connections to PN10, PN16, ANSI Class 150. Working pressure standard – up to PN16. Other type of connection on request.
Wafer Type Check Valve
Air Valve
Double and Single Orifice Air Valve
A range of air valves covering the requirements for both filling/emptying of the water main plus removal of accumulated air in normal service. manufacturered in ductile iron, these valves can be tailored to most applications. Potable water compatible materials to BS 6920 EPDM seat to EN 681-1
Hydrant
Up to DN80mm Underground Screwdown Fire Hydrant Manufactured in ductile iron, this hydrant fully meets the requirements of BS 750 type 2. Outlet is to gunmetal (London thread design) and ductile iron (Bayonet or instantaneous). Potable water compatible materials to BS 6920 are used throughout.