OPERATION AND MAINTENANCE MANUAL
12-2016
7
2.6 PRODUCTION AND ACCEPTANCE
Type 2112 gate valves are accepted and produced
in accordance with EN 1074-2 (Valves for water supply. Fitness for purpose requirements and appropriate
verification tests. Isolating valves) and EN 12266-1 (Industrial valves. Testing of valves). All valves (100%) are
subject to tightness testing. The tests include external body tightness and closing tightness.
2.7 MARKINGS
The gate valve marking meets the following standards: EN-19, EN-1074-1.
The gate valve bodies feature markings on the front and back walls of the body chamber. The marking
contains the following data:
- valve type (defined by the product reference standard number)
- nominal diameter
- nominal pressure
- body material type
- manufacturer trademark
The location on the valve specified in the documentation features the nameplate which contains the
following data:
- manufacturer's company name and logo
- serial number
- sealing temperature rating
- construction mark "B" and/or mark "CE" (as applicable)
- product type.
3 PROTECTION, STORAGE & TRANSPORT
3.1 PROTECTIVE COATINGS
All inner and outer cast-iron surfaces are protected with electro-deposited epoxy coat. The coat has been
approved for contact with foodstuffs.
The anti-corrosion coating layer minimum thickness is 250
µ
m.
The casting surface is pre-treated for epoxy coating in accordance with the relevant technical documentation and
EN ISO 12944-5.
The screws connecting the body and the cover are manufactured as stainless, grade OH18N9 or Fe/Zn5
(galvanised steel).
3.2 PACKAGING
The gate valves are packed on EURO pallets (1200x800) and protected with heat-shrunk film.
3.3 STORAGE
Store the gate valves in sheltered rooms.
