DESIGN FEATURES
Dual plate, spring loaded, wafer style design for the protection of gas or liquid piping systems.
APPLICATIONS
Pumping stations
Water treatment and supply.
Networks for clean water distribution, irrigation (filtered water).
Fire protection networks.
Air-compressors.
Applications with different fluids (to be consulted).
Ensuring the protection of pumps against flow inversion.
Desalination.
TECHNICAL DATA
RANGE: DN 40 TO DN 1400
Design: EN16767(EN12516-1) / API594 (ASME B16.34)
Connections: Wafer or Flanged PN6 to PN100 ACC. to EN1092-1 /PN6 to PN40 ISO7005-1 / BS 4504 sect 3.2 ANSI 125# to 600# ACC. to ASME B16.1/ B16.5 / B16.47 (JIS5/10K)
Face to Face: EN588 series 16 / API594
Testing: EN12266(ISO5208) or API598
Maximum working pressures: depending on material construction
Operating temperatures: -20ºC +120ºC (for other temperatures inquire).
Minimum back pressure for tightness: 0,3 to 0,5 Bars.
Marking: EN-19 / ASME B16.34 (MSS Sp25).
Materials: Ductile Iron, Steel, Stainless steel, superduplex,brz-alu.
TECHNICAL PERFORMANCE
Short Face To Face connection with good hydraulic performance.
Low pressure drop.
Compactness.
Seal vulcanized on the seat of the body.
Springs helping closing the plates (reducing waterhammer).
Two springs for equilibrated forces on the plates.
Stops on plates to reduce friction between ears of plates and shaft.
Symmetrical flow obtained by the centering pin when the plates are fully opened.
Horizontal and Vertical installation in pipeline.
Lifting rings from DN 250.
MATERIALS
Ductile Iron, Steel, Stainless steel, superduplex,brz-alu.
SPECIAL ALLOYS
Over the years the most frequent used materials on the desalination market have been the so called “Superstainless” or “ superaustenitic”, which anti corrosive properties are superior to austenitic steels.
Due to the price increment on the prime materials and as an alternative more competitive for these materials, Duplex and Superduplex of second generation have been introduced in the market of desalination.
The family of Duplex and Super duplex Stainless steels offer a significant advantage over Standard austinic steels.
The 50/50 ferrite /austenite structure gives improved corrosion and abrasion resistance together with improved tensile and yield properties.
Duplex Composition range is obtained by a complex structure, and therefore requires a much greater degree of technology, melting and process control compared with austenitic stainless steel constructions.
CASTFLOW VALVES S.L. has been experiencing the production of check valves in Duplex stainless steel for the last years, increasing our knowledge on the complex casting technology.
PITTING RESISTANCE EQUIVALENT NUMBER (PREN)
The resistance to pitting of an alloy is of vital importance , particularly so in handling seawater. Assessment of resistance to pitting is often made by use of a pitting resistance equivalent number which, when this takes account of Cr Mo and N is referred to as a PREn Number.
Calculation is made on the basis of the following.
PREN= %Cr+ 3.3%Mo16%N
CHECK VALVES MANUFACTURER
WATER TECHNOLOGIES – IN HOUSE MANUFACTURING
CASTFLOW VALVES S.L., is formed by technicians that have been developing valves for many years.
Counting on this experience we created new patterns for castings, including the improvements that
have been necessary to obtain a longer durability and better hydraulic features.
CASTFLOW VALVES S.L. is a ISO 9001:2015
ISO 14001:2015 – ANNEX III MODULE H approved company for design and production.
We produce valves based on our own design and we can offer to our clients all
TECHNICAL SUPPORT related to our valves.
We require maximum quality on prime materials. The foundries we work with, are highly specialised in
materials and posses a very important knowledge in casting our products. Our department for investigation and development is orientated to the technical requests of
our customers, adapting our development to these requests. The structure of CASTFLOW VALVES S.L.is oriented to serve our customers technical requests.
ISO 9001:2015
ISO 14001:2015
ANNEX III MODULE H
- CERTIFICATE OF THE QUALITY ASSURANCE SYSTEM EUROPEAN DIRECTIVE 2014/68/EU
- ISO 14001:2015
- ISO 9001:2015
Quality assurance plans
PROVIDING HIGH QUALITY PRODUCTS
Based on the customers requirements CASTFLOW VALVES S.L. can proceed with testing methods
according to a quality assurance plan and test and inspection schedules.
Receiving inspection
In process Control
Non destructive testing
US-testing-magetic
particle-dye
penetrant tests Porotest Dk30
Output control
pressure test of each valve
output documents
termination control
marking and packaging control
