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Needle Type Globe Valves and Accessories
General Features
Screwed Bonnet Needle Valves Type S350 | S351
  • Forged Body - DN 8 / Bore Size 8 mm
  • Screwed Bonnet
  • Replaceable Valve Seat
  • Stem with cold rolled surface, back seat
    and non-rotating needle tip
S350 with Internal Stem Thread
Components Carbon Steel Stainless Steel
Material / Material No.
Body 1.0406 1.4571
Bonnet 1.0501 1.4571
Valve Seat 1.4571 1.4571
Valve Stem 1.4104 1.4571
Needle Tip 1.4122 1.4571
Packing PTFE (Optional Graphite)
Union Nut Unalloyed Steel 1.4571
Tube Fitting Unalloyed Steel 1.4571
Handwheel Plastic
S351 with External Stem Thread*
Components Carbon Steel Stainless Steel
Material / Material No.
Body 1.0406 1.4571
Bonnet 1.7709 1.4571
Valve Seat 1.4571 1.4571
Valve Stem 1.4021 1.4571
Needle Tip 1.4122 1.4571
Packing Graphite
Stem Nut Brass 1.4301
Union Nut 1.0501 1.4571
Single Ferrule 1.4571 1.4571
Handwheel Unalloyed Steel
F350 Bellows Sealed Option*
Components Carbon Steel Stainless Steel
Material / Material No.
Body 1.0406 1.4571
Bonnet 1.4571 1.4571
Bellow 1.4571 1.4571
Valve Seat 1.4571 1.4571
Valve Stem 1.4571 1.4571
Needle Tip Stellite Stellite
Packing Graphite
Stem Nut 1.4122 1.4122
Union Nut 1.0501 1.4571
Single Ferrule 1.4571 1.4571
Handwheel Plastic
* Temperature limit for Carbon Steel -10°C to 450°C.
Temperature limit for Single Ferrule Tube Fitting max. 400°C.
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