| 摘要 |
<p>A precise and constant volume dose of liquid is obtained for various purposes as a free flow or as spray. Graduated doses are obtainable with constant flow. A central body (1) comprises a guide (2) mounted in a bottle (12) with fixing collar (3) and at lower end is attached (7)to conical shaped section (4, 5) with side inlets (9, 10). A piston carrier (15) supports a piston (23) and is attached to a shaft (16) with central channel (17) to valve tail (18) with a diffuser (27) which is manually pressed downwards to provide dose via the channel. A spring (22) holds the piston carrier in the upper position.</p> |
