Sleeveline plug valve for chemical processing

  Brand Positioning and Background GEKO Valves · Founded: 1956, Germany · Specialty: High-corrosion, high-reliability rotary valves · Core Focus: Zero leakage, low emission, high safety · Product Range: Plug valves, high-performance butterfly valves, fluorine-lined valves · Typical Industries: Chemical, refining, alkylation, acids & bases, slurries, fine chemicals · Key Advantages: Self-wiping, lubrication-free, online repairable, fire-safe       Key Product Series a) Plug Valves (Sleeve Valves) Sleeveline Non-lubricated Plug Valve Structure: Tapered plug + PFA/PTFE sleeve, self-wiping  Features: Zero leakage, lubrication-free, adjustable and repairable online  Sealing: PFA/PTFE sleeve, bi-directional  Applications: Strong acids, strong bases, chemical processing, alkylation units  Maintenance: Sleeve replacement without grinding      Fully Lined PFA Plug Valve Structure: Full PFA-lined body and plug  Applications: Extreme corrosion, halogens, oxidizers, high-purity conditions  Features: Metal fully isolated, zero corrosion, no deposits      High-Performance Plug Valve Structure: PFA-encapsulated tapered seat  Temperature Range: -40°C to 274°C  Advantages: High wear resistance, longer lifespan, simplified maintenance    b) High-Performance Butterfly Valves Triple-Eccentric Metal Seated Butterfly Valve Structure: Triple eccentric, metal laminated seal  Pressure Class: Class 150/300/600, PN16–PN100  Sealing: ISO 5208 Rate A zero leakage, API 607 fire-safe  Applications: High temperature, oil & gas, steam, gas, process loops  Features: Frictionless operation, tighter when closing, long service life    Double-Eccentric Butterfly Valve Applications: Medium-high pressure, bi-directional sealing, low torque  Benefits: Replaces gate/stop valves, compact and lightweight  Fluorine-Lined Butterfly Valve Fully PFA/PTFE lined, corrosion-resistant      Core Technologies Sleeveline Sleeve Sealing: PFA/PTFE sleeve, self-wiping, zero leakage, online adjustable  Reverse Lip Stem Seal: PFA reverse lip + spring preload, dynamic & static dual seal, ISO 15848 low emission  Fire-Safe Design: API 607 certified, seals under high temperature  Online Maintenance: Replace sleeve, seal, or bearings without valve removal    Materials and Seals   Component Common Materials Applications Body WCB, CF8M, Alloy20, Hastelloy General, corrosive, highly corrosive Plug/Disc 316, Alloy20, PFA-coated Corrosion & wear-resistant Main Seal PFA, PTFE, TFE, Metal laminated Chemical, high temperature, fire-safe Stem Seal PFA reverse lip, Graphite Low emission, fire-safe Lining PFA, PTFE, FEP Extreme corrosion     Typical Applications & Models Acid/alkali chemical → Plug Valve  Extreme corrosion/fluorine requirement → Fully Lined PFA Plug Valve  Refining/alkylation → Specialized Plug Valve  High-temperature gas, fire-safe, zero leakage → Triple-Eccentric Butterfly Valve  Slurry, wastewater, particulates → Fluorine-Lined Butterfly Valve      GEKO Valve Maintenance Process 1.Disassembly: Remove actuator → bonnet → plug/disc → sleeve/seal  2.Replacement Parts (Full Overhaul): PFA/PTFE sleeve, stem seal, bearings, O-rings, actuator maintenance  3.Assembly: Align plug/disc, pre-tighten seal evenly, follow torque standards, smooth full-stroke operation  4.Pressure Test: Body 1.5× nominal pressure, Seal 1.1×, hold ≥5 min, zero leakage, test certificate required       GEKO Valves vs. Standard Valves     Feature GEKO Standard Valve Seal Self-wiping sleeve, zero leakage   Prone to wear, internal leakage Maintenance Online repairable, lubrication-free   Requires disassembly Lifespan 3–5× longer   Short Emission Low emission certified   Standard Corrosion Resistance Ultra-high   Standard   Summary Focus on Sleeve, Seal, Alignment Plug Valve: Replace sleeve & seal, align plug  Butterfly Valve: Triple-eccentric focus on seal, concentric on lining  All valves: Pressure test twice, certificates issued  Extreme corrosion: Use genuine PFA/PTFE, no substitutes    GEKO specializes in corrosion-resistant rotary valves, mainly plug and triple-eccentric butterfly valves, featuring zero leakage, self-wiping, online repairable, and low emission—ideal for chemical, refining, acid/alkali operations. Maintenance focuses on sleeve/seal replacement, precise alignment, and strict pressure testing.    Contact us for more： info@geko-union.com