Rising Stem Ball Valves

Specially designed for Molecular Sieve application it can be used effectively in dirty services. The ball movement off the seats allows a cleaning action of the ball surface thus eliminating the friction during opening/closing actions and allowing for reduced torque/thrust during operation.



GENERAL APPLICATIONS

Top Entry Rising Stem Ball valves are suitable for Molecular sieve dehydration, dryer switching, suction, and discharge isolation, heat transfer, flowlines, Emergency shutdown, etc.


MATERIALS OF CONSTRUCTION

Low Temperature and Low Alloy Carbon Steel, Stainless steel, Duplex and Super Duplex, Nickel alloys


APPLICATIONS

• UTILITY
• CORROSIVE & DIRTY
• LOW TEMPERATURE
• HIGH PRESSURE


TECHNICAL DATA

Design

API 6D, API 600, ASME B16.34, ISO 14313, ISO 10423, ISO 17292

Design pressure

ASME B16.34, API 600

Body wall thickness

ASME B16.34, ASME VIII Div. I, ASME VIII Div. 2, ISO 17292, API 600

Face to Face 

API 6D, ASME B16.10 Long pattern

Temperature range

-196° to 600°C (-320° to 1112°F)

Pressures range

PN20 (ANSI 150) to PN420 (ANSI 2500)

Size range

DN50 (2″) to DN600 (24″)

End connections

ASME B16.5 ≤ DN600 (24″) Flanged RF, FF, RTJ MSS-SP-44 = DN550 (22″) Flanged RF, FF, RTJ ASME B16.25 Butt-Weld BW Clamp (HUB)




STANDARD FEATURES

Construction

One piece bolted bonnet

Port

Reduced bore, full bore or fully piggable

Stem retention

Anti blow-out stem

Sealing

Single seated bi-directional, with preferential flow direction, to avoid pressure trapped between the seats. Metal seated with Tungsten or Chrome Carbide coating; Soft seated with thermoplastic polymers (Nylon, Devlon, PEEK, PCTFE), special polymers upon request

Leakage rate

ISO 5208 rate A soft seated, rate B, C, D metal seated

Operating Description

The movement of the ball tilted from the seat before starting the rotation eliminates the wear of the seat seal and allows for smooth movement and low torque. The same tilting movement when starting the opening allows for a cleaning flow all around ball surface; this flow automatically flushes the ball surface removing eventual dirt particles from the sealing areas

Grease injectors

Available on request on both seats and stem

Drain / Vent

Drilled and threaded connections for all sizes, Vents for sizes below DN

Vent

Drilled and threaded vent connections for sizes ≥ DN150 (6″) < DN150 upon request

Lifting points

Included for sizes ≥ DN150 (6″) or on valves of 250 kg min

Support feet

Included for sizes ≥ DN150 (6″) or on valves of 250 kg min

Stem extension

Available for applications in low/cryogenic temperature applications or for high temperature application

Valve operation

Handwheel, Gear box or Actuator with position indicator and locking device

Material testing

Pressure containing & controlling parts to EN 10204 3.1 Materials in Sour Service according to NACE MR0175, MR0103, ISO 15156 Non-destructive testing (NDT) to API 6D, ASME B16.34

Valve testing

Hydrostatic & pneumatic testing to API 6D, ASME B16.34, ISO 5208 (other upon request)




APPROVALS

Safety Integrity Level

SIL 3

Fire Safe

API 607, API 6FA, BS 6755, ISO 10497-5

Area Classification

ATEX 94/9/EC

Pressure Equipment Directive

PED 97/23/EC

Fugitive Emission

ISO 15848/1, ISO 15848/2

Construction

API 6D, API 6DSS



Get In Touch

Drop Us A Message

Our Contact Details

  • MV Nederland BV / Maverick Valves Manufacturing HQ BV

    Kalundborg 10 5026 SE Tilburg The Netherlands
  • info@maverickvalves.com
  • +31 (0) 13 303 3600