| 摘要 |
An improved cylinder for pumps of the type where a plunger moves within a cylinder forcing fluid through a port in a cap fitted into one end of the cylinder. A multiple diameter cap encircled by a multiple diameter sleeve transmits the pressure force acting on the largest surface area of the cap through the sleeve to a smaller area acting on the packing seal. Since the pressure multiplied by the area is a constant, a higher pressure is applied to a smaller area at the seals; and with a higher pressure acting on the seals than existing in the working fluid, a seal is created to prevent passage of the fluid.
|
