North Valley stock a comprehensive range of Chainwheels to suit Manually Operated Roller Shutter Doors and Industrial Doors.
Chain Wheel options range from Malleable Cast, Aluminium & Plastic, and from sizes 4" Ø - 12"Ø. Chainwheels can be supplied as Plain Bore, or with a Keyway, and as a Plain Chain Wheel or fitted with Sprockets and Pinions.
Chainwheels are available from stock fitted with Sprockets for use with Transmission Drive Chain or with Drive Pinions for meshing direclty to a Drive Gear or Barrel Gear.
A Manually Operated Roller Shutter requires a Sprung Barrel which prevents the shutter from free falling closed. Chainwheel Assemblies for use in a Manually Operated Roller Shutter can be either through a direct meshing gear set where the Drive Pinion fits into, or meshes with, the Drive Gear or Barrel Gear or alternatively using a Sprocket
Transmission Drive Chain with Sprocket and Platewheel generally offers a greater flexibility when positioning the Chainwheel Assembly to the End Plates.
Meshing gears, whilst not as flexible as Transmission Drive, generally offer a stronger drive connection as the teeth of both the Drive Pinion and the Drive Gear or Barrel Gear are locked (meshed) together.
NVM are one of the country’s leading suppliers of Industrial Door Components, Sectional Overhead Door Components, Tube Motors and Electronic Accessories, Wicket Gates, Steel Personnel and Fire Exit Doors and bespoke manufactured Steel Doors rated to 6 hrs, and LPS rated Steel Doors to LPS Level 6.
Since it’s inception in 1966, the company has diversified into the fabrication market and boasts a manufacturing plant dedicated to the production of gates, railings and architectural street furniture, complimented by a fully equipped in house paint shop.
North Valley Metal Co. (Colne) Limited
Walverdene Works, Brook Street