Severe Service Ball Valve


Today’s valve for
tomorrow’s need

SSV offers today’s products for Tomorrow’s Eco Systems
where higher efficiency and cleaner environment requires
High Temperature, High Pressure (HTHP), High Abrasive
performance behind the scene at
higher standard of tomorrow.

 

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Severe Service Ball Valve

PROCESS

Forged

SIZE RANGE

1/2" ~ 42"

RATING PRESSURE

ASME 150 ~ 4500 Class

WORKING TEMP.

Up to 1652 ℉

Typical Applications

Petrochemical / Chemical
  • Acetic acid handling
  • Catalyst handling
  • DOWTHERMTM handling
  • Gas furnace isolation
  • Lethal services
  • Polyethylene isolation
  • Polypropylene isolation
Refining
  • Catalyst slurry handling
  • Coal slurry handling / ash removal
  • Heavy oil units
  • Hydrogen isolation
  • Hydrotreating units
  • Isolation in coker units
  • Isolation in FCCU applications
Mining
  • Autoclaves
  • Slurry transport

Features and Benefits

1. Body/End Connectin
  • Machined from forgings for material structural integrity.
  •  End Connectons: RFF- raised face flage – Standard.
  • Optons available on request: BW-But Weld, SW-Socket Weld, RTJ, Hub Connectors, Threaded, Lens Joint, Wafer, etc.
  •  Weld overlay of weted surfaces to protect from corrosion and erosion – available upon request.
2 & 3. Ball + Seats = the sealing assembly
  • Two-sided seat lapping delivers outstanding seal performance
  • Each ball and seat set are “blued” to verify continual contact is achieved across entire seat face
  • Oversized spheres allow slight over travel, which reduces wear and can accommodate misaligned actuator stops
  • Seating surfaces are protected from erosion in  the fully-opened position
4. Dual Belleville Springs
  • Provides resilient loading of ball to seat.
  • Provides efectve partculate exclusion.
5. Stem
  • SSV provides oversized stems to accommodate  torque increases that can happen over time. Economical, under-designed stems can cause signiἀcant operational problems with frequent use and catalyst build-up.
6. Pressure-energized inner stem seal
  • Two hard coated and lapped metal thrust bearings serve as both a pressure-energized inner stem seal and stem guide
  • Bearings prevent migration of media into the packing box
  • Lapped surfaces provide tight seal in combination with line pressure exerting additional vertical force
  • Dual coated inner stem seals prevent galling between body, stem and the inner stem seals
7. Packing Bushing
  • Prevents stem packing intrusion into body.
  • Works with stem bearing to prevent lateral stem moton
8. Packing Rings
  •  Reinforced graphite.
9. Anti-xtrusion Rings
  • Prevents packing extrusion.
10. Packing Follower
  • Thermally matched to stem material.
  • Prevents galling and contains upper packing.
11. Articulting Gland Flane
  • Spherically engages the packing follower to prevent stem binding and galling during adjustments.
12. Belleville Springs
  • Live load on the bolted joint eliminates routne gland adjustments.
  • Reduces maintenance.
13.Stem support bushing
  • Secondary stem bearing guide eliminates movement and packing deformation caused  by side-loading of stem by  the actuator
  • The stem support bushing, in combination with the double inner stem seals, provides a dual guiding system which prevents lateral movement of the valve stem
14. Mounting Flane
  • To properly support actuator weight,SSV heavy duty mounting brackets are ἀrst welded or bolted into place then machined for precise alignment
  • Alignment surface is both square with and centered  over the stem, promoting proper stem and stem  bushing alignment
15. Body Gasket
  • ASME 150 – 1500 class valves use an Inconel spiral-wound gasket with impregnated Grafoil®
  • ASME 2500 class valves and above use a pressure energized Inconel metal gold-plated delta ring gasket