Non-Lubricated Sleeved Plug Valve Manufacturer in Europe – Valvesonly Europe (Germany) 

Valvesonly Europe manufactures non-lubricated sleeved plug valves for clean and corrosive services requiring bubble-tight performance with minimal maintenance. Built in Germany to API 599 / ASME B16.34 / PED. 

Function & Working 

A precision plug rotates within a PTFE/RPTFE/UHMWPE/PFA sleeve lining the body bore. The sleeve provides the primary seal and bearing surface, eliminating the need for injected lubricants and preventing media contamination. 

Advantages 

  • Maintenance-free sealing; no external lubrication 
  • Tight shut-off in both directions 
  • Low torque; excellent chemical resistance 
  • Fire-safe versions with secondary metal seat 
  • Full-bore and reduced-bore configurations 

Types Offered 

Full Bore • Reduced Bore • Fire-Safe • Jacketed 

Industries in Europe 

Chemical Processing • Water & Wastewater • Desalination • Marine • Power Plant Utilities • Mining Slurry By-passes (cleaning lines) 

Materials (Body, Plug, Sleeve, Stem) 

Category  Material  Standards / Grades  Typical Use 
Cast Iron  EN-GJL-250  EN 1561  Water distribution 
Ductile Iron  EN-GJS-400-15 / 500-7  EN 1563  Water/wastewater 
Carbon Steel  WCB/LCB  ASTM A216/A352  General/low-temp service 
Stainless  CF8/CF8M/CF3M  ASTM A351  Corrosives 
Alloyed  Alloy 20, Hastelloy, Monel  ASTM B/EN  Aggressive chemicals 
Plug  316 SS, Duplex, Monel  ASTM A182/B  Corrosion/wear resistance 
Sleeve  PTFE, RPTFE, UHMWPE, PFA, PCTFE  —  Primary sealing element 
Stem  316/410 SS  ASTM A182  Strength & corrosion resistance 

Technical Specifications 

  • Size: DN15–DN600 (½″–24″) 
  • Pressure: PN10–PN40 / Class 150–300 
  • Temp: –29 °C to +260 °C (sleeve-dependent) 
  • Ends: Flanged (EN 1092 / ASME B16.5), SW, Threaded (NPT/BSP) 
  • Standards: API 599, ASME B16.34, PED 
  • Testing: EN 12266-1 / API 598 
  • Actuation: Lever/gear, Electric, Pneumatic 
  • Options: Antistatic device, locking device, fire-safe construction
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