SERIES VL, CUSTOM MADE RANGE
PISTON LOCKING DEVICE
Arrangement A
Arrangement B
Arrangement C
Soft Seal Piston Valve
NO DEAD SPACE SOFT SEAL PISTON VALVES
Code: VL4S - VL6S
Large size valves utilize
a non-rising stem to
minimize overall length
Mechanical
position indicator
An extended stuffing box
eliminates dead space and
improves piston alignment
Lantern positioning
screw
Standard branch angle:
45° & 60°
90°, and other
specific angles available
upon request
Piston is seat-less to
maximize self-cleaning
design
Fig. 025S
Strahman bodies are
designed to allow full bore
with a high rigidity lantern
TECHNICAL & GENERAL INFORMATION
Design Code & Construction
• Design standard compliant with ASME B16.34
• International standards include ANSI, DIN, JIS, API etc.
• Wide range of material selections including carbon steel / stainless steel / Titanium / Hastelloy / Duplex /
Monel / Tantalum / Zirconium
• Fabricated, cast, forged and bar stock designs
• Combinations of fabricated, sand and investment casings, and bar stock available
Surface Finish
• For polymer applications, Strahman recommends a surface finish of 300 (Ra 0.4) for all parts are in
contact with the medium
Quality assurance & testing
• ISO 9001 compliant
• PED / ATEX / CE marking
LINE & BRANCH CONNECTIONS
Flanges ANSI,
DIN, JIS
ACTUATION OPTIONS
Hand Wheel
Electric Actuator Air Motor
Double or single
acting Air Cylinder
Double or single acting Air
Cylinder with Safety Hand Wheel
Hydraulic
Cylinder
Double or single acting Air
Cylinder with side mounted
Safety Hand Wheel
• TUV / HPO / TA Luft
• Standard testing procedures
Threaded
connections
NPT & BSP
Soft Seal Valves can be equipped with the following end connections
Bevel Gear
Live loaded packing
arrangement is standard
on Strahman Valves
TEMPERATURE PROBE IN THE PISTON
RTD SENSORS
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