Hollow engine valve and production method thereof

Solenoid valve with explosion-proof structure, fuel feeding system, and method of manufacturing the solenoid valve with explosion-proof structure

Check valve, air-conditioning apparatus, and method of manufacturing check valve

Method for producing a ductwork damper, ductwork damper, and ductwork damper unit incorporating same

Process and device for manufacturing hollow, internally cooled valves

FAUCET WITH INTEGRATED PUSH-TO-CONNECT FITTING

Faucet with integrated push-to-connect fitting

Faucet with integrated push-to-connect fitting

Production method of bathroom hardware shells

Oil jet device

Method and apparatus for manufacturing stepped member

Solenoid housing and method of providing a solenoid housing

Integral push fitting and valve with integral push fitting and method of manufacturing same

Method for manufacturing hollow engine valve

Solenoid housing and method of providing a solenoid housing

Check valve unit for solid ink reservoir system

BALL VALVE DEVICE AND METHOD FOR FORMING A BALL RETAINER IN A CHECK VALVE

BALL VALVE DEVICE AND METHOD FOR FORMING A BALL RETAINER IN A CHECK VALVE

Method of processing orifice

Injection valve, method for its production, and apparatus for performing the method

Check valve unit for solid ink reservoir system

Method of providing a solenoid housing

Method for producing valve housings, and a valve housing

Method for forging/molding a coarse blank of an oil cylinder