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E51/52 Enviro-safe Valve – High Integrity Flanged Valves

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Worcester’s Enviro-Safe range of ball valves has a high cycle life at an increased range of temperatures and pressures. At the heart of the valve’s high integrity performance is its dual stem packing. The unique primary seal is designed so that it will always fail in service BEFORE the secondary seal. With a monitoring port drilled through to a lantern ring which is located between the two sealing stages, primary seal leakage can be detected whilst the secondary seals ensure overall integrity. This unique and foolproof stem packing design is live loaded with stainless steel disc springs and has been proven in testing to be bubble-tight on helium even after primary seal leakage. Primary seal integrity can then be restored by simply tightening down the gland plate. The Enviro-Safe features two stem purge bosses. One is drilled and tapped to 1/8″ BSPT standard thread that allows connection of instrumentation/sensing devices, while the optional second port allows through purging between the stem seals. In addition, the one piece body eliminates unnecessary joints. The Enviro-Safe valves are also available in fire-safe versions EF51/52 or sour gas versions to NACE (MR. 0175/ISO 15156). A further benefit allows automated versions to have the actuator removed without affecting the integrity of the valve seals.

  • Specifications
  • Technical Data
  • Advantages
  • Industries
  • Applications
  • Contact

Specifications

Operating Parameters:

 

  • Flows to 565 m³/h (2500 gpm)
  • Heads to 110 m (350 ft)
  • Pressures to 17 bar (250 psi)
  • Temperatures from -30°C (-20°F) to 90°C (200°F)

 

Shaft Metallurgy Options:

 

  • 316 SS
  • Alloy 20
  • Hastelloy
  • Titanium

 

Features:

 

  • Full basket strainer
  • NEMA in-line motor
  • Fiberglass mounting plate
  • Tapered “Polygon” impeller drive
  • “Pull-out” bearing retainers
  • Level controls

 

Options:

 

  • Simplex and duplex pit covers
  • Float switches
  • Particulate separators
  • Non-metallic lubrication lines
  • Tailpipe

Technical Data

  • Engineered Polymer Composite Construction offers cost-effective corrosion-resistance, is lightweight, non-galling, non-sparking, and non-conductive.
  • Unitized Case with Integrally Molded Flanges at the suction and discharge nozzles, fully gusseted for structural soundness.
  • Externally Adjustable, Semi-Open Impeller provides consistently high efficiencies and minimizes maintenance.
  • Shaft/Bearing System operates below the first critical speed for less shaft whip and longer bearing life.
  • Bearings can be lubricated by external flush or self-lubricated by the pump fluid.
  • Single-Piece Column is lightweight, filament-wound, reinforced fiberglass composite for strength and rigidity.

Advantages

  • Lightweight and corrosion-resistant due to engineered polymer composite construction.
  • High efficiency and minimal maintenance with externally adjustable impeller.
  • Long bearing life with low shaft whip and flexible lubrication options.
  • Robust construction with unitized case and reinforced single-piece column.

Industries

  • Leaching Acid
  • Chemical and Liquor
  • Caustic and Chlor-Alkali
  • Bleach Chemicals
  • Auxiliary
  • Acid Transfer
  • OEM
  • Water Treatment
  • Water Supply and Distribution
  • Wastewater Collection and Treatment
  • Polymers
  • Plating, Galvanizing and Other Coatings
  • Pharmaceuticals
  • Automotive and Aircraft

Applications

  • Corrosive Services
  • General Purpose
  • Water Treatment
  • Pulp and Paper
  • Chemical Processing
  • Utility
  • Metal and Steel Industry
  • Pollution Control
  • Plating

Contact Us

Contact our Pump Specialist Team

  • Phil Soltan (External) – mob: 086 185 3782
  • Adrian McSweeney – tel: 021 461 7212
  • Paul-Fox Morris – tel: 021 461 7231
  • Una Long (Pump & Service Support) – tel: 021 431 7200
  • Tel: 021 461 7200

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