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Metal Seated Ball Valve

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Specifications
TYPE : Two Piece Flanged End
PORT : Full & Regular (Reduced) Bore
SIZE : 15 mm to 250mm NB
Pressure Rating :
ASME #150
PN 20
ASME#300
PN 50
ASME #600
PN 100
Temperature Range 35 Deg C to 538Deg C
Body Materials Stainless Steel / Carbon Steel / Alloys
Design Standard API 6D rev 23; ISO 17292 rev 2004
End Flanges ASME B16.5 2013
Face to Face Dimension ASME B16.10 Rev 2009
Fire safe design API-607 Rev 2010
Testing API 598 Rev 2009
Sour Service NACE MOR 0175 Rev 2009
Documents BS/EN 10204-3.1 REV 2004
Other Information
Technical Details

SANKEY designs and manufactures metal seated ball valves with high strength stainless metal seats and balls over-layed with carbides. Metal seated ball valves are required for many extreme service conditions involving abrasives, corrosives, high cycle rates or extreme temperature and pressure. These conditions require simple, well-built but rugged designs, metal seats, rigorous testing and carefully chosen materials. Valves should be tested to nationally recognized standards and, then again, with in-house methods designed to simulate the actual process conditions.
New developments in technology and our experience addressing severe service conditions have helped us to develop several lines of new products

Valve Application

Hot hydrocarbons /scaling carbonates /fractionator bottoms /power applications /steam /catalyst withdrawal /fly ash /corrosive slurries / acidic slurries.

Areas of application

Chemical/ Pharmaceutical/ Food /Pharmaceutical/ Petrochemical/ Energy/ Plastics/ Oil and Gas /Cement and lubrication

Design
  • Off center Two piece / Three Piece design uses of advanced spiral wound Graphoil gasket
  • Full Bore body, avoids clogging and ensures smooth flow when handling slurries and solid.
  • Design in compliance with ASME B16.34 / BS5351
  • Duel stem bearing design reduces side thrust effect on stem, ensure uniform torque and smooth operation.
  • Superior ball & seat finish to 5 RMS
  • Body and seats lapped and matched optimum performance.
  • Available fire-tested to API-607 Rev. 5
  • Blowout proof stem
  • Low emission packing
  • All valves with graphite packing and backup seal, and valves are fire-safe tested.
  • Advanced HVOF & Plasma spray trim coating with hardness more than 60 Rc
Stem Design Features:
  • Full guided stem, by bimetallic gland bearing
  • Extended stem
  • Double packed stuffing box design
  • Antistatic- Design
Leakage Test:
• Class IV • Class VI also available

Actuator mounting flange:
• DIN/ISO 5211
BOM

Bill of Material
SR.NO. PART NAME STAINLESS STEEL CARBON STEEL QTY
1 BODY ASTM A351 CF8M ASTM A216 WCB 1
2 END CONN. ASTM A351 CF8M ASTM A216 WCB 1
3 BALL ASTM A276 SS316 ASTM A276 SS316 1
4 STEM ASTM A479 SS316 ASTM A479 SS316 1
5 SEAT ASTM 182 SS316 ASTM 182 SS316 2
5 SEAT RING/SPRING GRAPHITE / INCONEL GRAPHITE / INCONEL 2
6 STEM SEAL GRAPHITE GRAPHITE 2
7 GLAND SS316 MS 1
8 GLAND BEARING DELRIN DELRIN 1
9 SPACER SS316 SS316 1
10 STEM THRUST WASHER PEEK / SS316(Hr Cr) PEEK / SS316(Hr Cr) 1
11 BODY SEAL GRAPHITE GRAPHITE 1
12 STUD ASTM A193 GR.B8M ASTM A193 GR.B7 1
13 NUT ASTM A194 GR.8M ASTM A194 GR.2H 1
14 STUD ASTM A193 GR. B8M ASTM A193 GR.B7 4
15 NUT ASTM A194 GR.8M ASTM A194 GR.2H 4
16 LEVER SS410 SS410 1
17 ALLEN BOLT MS MS 1
Key Features
ADVANTAGES

SANKEY METAL SEATED BALL VALVE

Metal to Metal Seating

The ball and the seat rings are hard-faced on the sealing areas by using different coatings selected upon the service conditions i.e. Electro-less Nickel Plating, Stellite hard facing, Chromium Carbide and above all Tungsten Carbide which assures, per our experience, the best results in most applications. The sealing is assured by true metal to metal contact between the two hard-coated surface. Each coating is applied per specific methodologies, i.e. Tungsten Carbide is applied by high velocity detonation gun.

Stem Design

The stem is independent from the ball and is a blowout proof design. The stem seals are designed per the service conditions, i.e. for high temperature valves (above 250 degC) stem seals is composed of loaded graphite packing. Valves for high temperature conditions are designed with extended stem to maintain the maximum sealing capacity of the packing.

Actuation