Unidirectional Knife Gate Valve Serie A
DESCRIPTION:
Unidirectional Knife Gate Valve – Serie A
- One piece cast body with guides to support gate and seat wedges
- Provides high flow rates with low pressure drop
- Various seat and packing materials available
- An arrow is marked on the body indicating the flow direction
SIZES:
Standard manufacturing sizes: From DN50 up to DN2000
WORKING PRESSURES (ΔP):
| ND50 – 250 | 10 bar |
| ND300 – 400 | 6 bar |
| ND450 | 5 bar |
| ND500 – 600 | 4 bar |
| ND700 – 1600 | 2 bar |
The mentioned working pressures are just valid for the pressures applied on the direction of the arrow market on the body. As
the valve is designed with gate support guides, the valves are able to support a 30% of these pressures from the opposite direction without any damage on them. In these cases, the valves are not 100% water tight. To obtain total water tightness in these conditions, it is necessary to incorporate additional supports.
GENERAL APPLICATIONS
This knife gate valve is suitable for liquids that contain a maximum of 5% suspended solids. If it is used for dry solids in gravity feed applications it should be installed with the arrow on the body pointing in the opposite direction to the flow.
DESIGNED FOR APPLICATIONS SUCH AS:
-
Unidirectional Knife Gate Valve – Serie A
Paper Industry
- Mining
- Silo emptying
- Chemical plants
- Pumping
- Food Industry
- Sewage treatment
DIRECTIVES
- Pressure Equipment Directive:
(PED) ART 4.3 /CAT.1.• Potential Explosive Atmospheres Directive:
(ATEX) CAT.3 ZONA 2 y 22 GD.
QUALITY DOSSIER:
- Body test = working pressure x 1.5
- Seat test = working pressure x 1.1
