Valve device 1 is provided with poppet valve 5 for opening and closing flow path 2. Thread part 5d is formed on shaft 5a of this poppet valve, and driving gear 11 is screwed into this thread part. Driving gear 11 is rotated via pinion 21 by motor 22, and t...

In a cooling unit for an engine comprising a cylinder block 1 having a water jacket 4 which opens into the surface of the cylinder block 1 and which circulates a cooling water in surrounding relationship with a cylinder bore, and a gasket 11 held sandwiche...

An exhaust throttle valve (1) includes a housing (2) formed with a gas passage (2a), first and second valve shafts (4) rotatably journaled in the housing (2), a large valve body (5) connected to the first valve shaft, and a small valve body (6) connected t...

It is an object to provide a flow control valve in which corrosion is less likely to occur in the vicinity of a radial step portion in a gas passage of a housing and to provide a method for manufacturing the same. A flow control valve 1 includes: a housing...

A flow rate control valve 1 comprises a first sleeve 4 and a second sleeve 5 fitted into an inner periphery of a housing 3. The both sleeves 4 and 5 have inner end faces 4d and 5d which are disposed in abutment against each other while being displaced from...

In a cooling unit for an engine comprising a cylinder block 1 having a water jacket 4 which opens into the surface of the cylinder block 1 and which circulates a cooling water in surrounding relationship with a cylinder bore, and a gasket 11 held sandwiche...