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Overview

SRi tandem ball valve is constituted by two balls, like the Double Block and Bleed ball valve, but the face-to-face dimension is in accordance with ASME B16.10.

On site, a SRi tandem ball valve can replace a single ball valve without modification of the pipe meaning two ball valves instead of only one.

Range

ND 2" (DN50) to ND 24" (DN600)

Classes

ASME CLASS 150 to 2500
DIN-PN PN 10 to 64

Material

Carbon & low alloy Steels
Stainless steels
Duplex & Super Duplex
Nickel Alloys
Titanium

Design features

API 6D/6A design & construction
API 6D & ASME B1610 face to face
Antistatic device
Double block and bleed (DBB)
Drain plug
Connection ends upon request
Firesafe design
O-ring seals
Self-Relieving seat
Soft seat insert
Trunnion mounted
Vent plug

On request

Full/reduced/customize bore
Manual or actuated operation

Optional Design features

Automatic bleeding system
By-pass system
Double Piston Effect (DPE)
Double Isolation & Bleed (DIB)
ENP on seat/ball/stem/body
Extended stem
Heating jacket
Lifting lugs /valve support
Locking device
Metal to metal seats
Overlay on seat pocket
Overlay on dynamic seal pockets
Overlay on all wetted parts
Polymeric lip-seals
Single Piston Effect
Stem injection fitting
Seat injection fitting
Transition pups pieces BW ends

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