Hard Seal Pneumatic Flange Triple Eccentric Butterfly Valve

Hard Seal Pneumatic Flange Triple Eccentric Butterfly Valve

  • Valve Size: DN50~DN400
  • Body Material: Stainless Steel SS304/SS316 and Carbon Steel
  • Disc Material: Stainless Steel SS304/SS316
  • Seal Material: Metal Hard Seal
  • Work Temperature: -29~+425 Degree
  • Flanged Connection: ISO 5211 or DIN 3337 Standard
  • Pressure Rating: PN10/PN16 ANSI150, DIN16, JIS 10K/16K
  • Medium: Water, Oil, Gas, Powder, Chemical etc….
  • Actuator Model: HPA Pneumatic Actuator Double Acting/Spring Return
  • Protection Class: Weatherproof – lP67
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      Product Overview

      The Hard Seal Pneumatic Flange Triple Eccentric Butterfly Valve combines a flange-style hard-seal valve body with a pneumatic actuator for reliable performance in high-pressure applications.

      Hard Seal Pneumatic Flange Triple Eccentric Butterfly Valve consists of flange hard seal butterfly valve and pneumatic actuator. The flanges at both ends of the butterfly valve body are connected to the pipeline flange, which has the advantage of relatively reliable sealing performance. Pneumatic flange butterfly valve can be divided into elastic seal and metal seal according to the sealing form. The elastic sealing materials are nitrile rubber and fluororubber. Among them, the hard seal butterfly valve is a multi-layer metal hard seal with the advantage of elastic seal. It has excellent sealing performance regardless of low temperature. Compared with the clamp-type butterfly valve, the pneumatic flange butterfly valve has higher pressure resistance. Generally, flange butterfly valves are used in high-pressure working conditions.

      Features & Benefits

      • Superior Flanged Integrity: Unlike wafer-style valves, the integral flanged body provides a more secure, bolted connection directly to the pipeline. This design is ideal for higher-pressure systems, end-of-line service, and applications where vibrational stress might be a concern, ensuring maximum operational safety and stability.
      • Friction-Free, Long-Life Sealing: The sophisticated triple eccentric geometry ensures the disc lifts off the metal seat almost immediately upon opening, creating a cam-like action that eliminates friction and wear. This Hearken design guarantees lower operating torque and a significantly extended, maintenance-free service life.
      • Extreme Condition Performance: With a solid metal hard seal, this valve operates flawlessly in a wide thermal range from -29°C to 425°C. It is inherently fire-safe and excels at handling challenging media like superheated steam, hot gases, oils, and light slurries where conventional soft-seated valves would quickly fail.
      • Precision Automated Control: Equipped with a high-performance pneumatic actuator (available in double-acting or spring-return configurations), this valve package offers responsive and reliable automation. The IP67-rated enclosure protects the actuator from dust and water ingress, ensuring dependable operation in the toughest plant environments.

      Parts and Material

      main materialNo.Part NameMaterial
      1Hexagon Socket ScrewStainless Steel
      2Valve BonnetCarbon Steel/Stainless Steel
      3GasketStainless Steel
      4Valve SeatStainless Steel + Graphite, PTFE
      5GasketStainless Steel
      6Valve DiscCarbon Steel/Stainless Steel
      7Straight Pin45# Steel/Stainless Steel
      8Bottom CoverCarbon Steel/Stainless Steel
      9GasketStainless Steel + Graphite, PTFE
      10BushingPTFE Composite Bearings
      11Valve BodyCarbon Steel/Stainless Steel
      12Valve StemStainless Steel
      13Connecting BracketCarbon Steel
      14BushingPTFE Composite Bearings
      15PackingPTFE/Flexible Graphite
      16GlandCarbon Steel/Stainless Steel
      17Solenoid ValveAluminum Alloy
      18Pneumatic ActuatorAluminum Alloy
      19Air FilterAluminum Alloy + Polycarbonate
      20Limit Switch BoxAluminum Alloy

       

      Dimension, Connection Size, and Actuator Model

      dimension

      DN

      INDimensionConnection SizeActuator Model
      LL1L2H2DD1D2TfN-D
      502″108215/248.5103.5/108121/136.21651251021834-18HPA083DA/HPA092SR
      652 1/2″112248.5/277.5108/121.5136.2/154.51851451221838-18HPA092DA/HPA105SR
      803″114277.5/277.5121.5/121.5154.5/154.52001601382038-18HPA105DA/HPA105SR
      1004″127358.3/358.3142/142187.6/187.62201801582038-18HPA125DA/HPA125SR
      1255″140358.3/403.6142/151187.6/204.72502101882238-18HPA125DA/HPA140SR
      1506″140403.6/468.4151/174204.7/2302852402122238-22HPA140DA/HPA160SR
      2008″152468.4/523.5174/206230/2623402952682438-22/12-22HPA160DA/HPA190SR
      25010″165523.5/539206/226262/287.6395/405350/35532026312-22/12-26HPA190DA/HPA210SR
      30012″178539/605.8226/260287.6/319.5445/460400/41037828412-22/12-26HPA210DA/HPA240SR
      35014″190605.8/719260/294319.5/365505/520460/47043830416-22/16-26HPA240DA/HPA270SR
      40016″216719/785294/404365/391565/580515/52549032416-26/16-30HPA270DA/HPA300SR
      45018″222785/920404/457391/440615/640565/58555040420-26/20-30HPA300DA/HPA350SR
      50020″229920/930457/520440/493670/715620/65061044420-26/20-33HPA350DA/HPA350SR

      Common Applications

      • Power Generation Plants (High-Pressure Steam Isolation)
      • Oil and Gas (Upstream and Downstream Processing)
      • Chemical and Petrochemical Facilities
      • LNG and Cryogenic Services
      • District Heating and High-Temperature Water Systems
      • Pulp & Paper Bleaching and Processing Lines

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