Ball valve tests are conducted according to Framework Technical Specifications formulated on the basis of effective standards and regulations.
IV. Documents received with delivery:
Ball valves are delivered with the following documents:
· Certificate of Technical Acceptance 3.1 acc. to PN-EN 10204,
· Declaration of Conformity acc. to Directive 97/23/WE (CE mark),
· Assembly and Operation Instruction,
All ball valves, depending on a torque that is needed for opening, are equipped with lever or worm gear. Optionally, ball valves can be equipped with electric, pneumatic or electric-pneumatic actuators.
VI. Columns for ball valves
Underground ball valves are equipped with columns which enable steering a ball valves that is installed under the ground.
GAZOMET offers two types of extensions:
1. Rigid columns (Klo, KL)
Height of columns of this type is stable measured from the axis of a ball valve up to the top of a stem or the axis of a handle of an actuator.
2. Telescopic columns (KT)
This type of column has the possibility of height regulation which can be fitted to existing housing conditions (400 mm).
An actuator cannot be installed on the telescopic extension.