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11LH

Two- and three-way control valve (equivalent to pneumatic versions series 11M9-2 and 11M9-3 / 12M6-3) equipped with electric engine series 11LH

11LH

Valve

  • Body in ductile iron EN-GJS-400-18-LT, carbon steel WCB (1.0619) or A351 CF8M (1.4408)
  • Multi-spring actuator in carbon steel with epoxy coating or stainless-steel AISI316
  • Normally-closed and normally-open function
  • Seal in PEEK, metal-metal
  • Equal-percentage characteristic (EQ% ; linear on request
  • Self-adjustable packing in PTFE and FPM
  • Guided shaft in stainless-steel AISI316 (1.4401) or 17-4PH (1.4542), grinded and polished
  • Upper and lower guides for plug (standard from DN 32 to DN 300)
  • Leakage classes: IV, VI
  • 4-Port body for easier maintenance and inspection
  • Maximum temperature up to +500 °C (+930 °F)
  • Minimum temperature down to -196 °C (-320 °F)
  • Connections:     DIN / ANSI flanges - BSPP – NPT – BW – SW

Engine

  • Fail-last function
  • Microprocessor with automatic self-calibration at startup
  • LED indicator to check status of the actuator
  • Not-consumable measuring system of distance, without potentiometer
  • Permanent storage in EPROM memory: values cannot be lost
  • Identification line breaks in runs 2-10 VDC and 4-20mA
  • Detachable cap and adaptable in 4 positions (every 90°) without any screw
  • Fail-safe position for switching of binary signal
  • Disengageable manual adjustment with signaling message
  • Identification of continuous operation errors (in case of locking by extraneous matters)
  • Input and output independently reversible
  • Input signal freely adjustable: 3-point or modulating
  • No need of grounding (PE);
  • Freely-adjustable hysteresis

11 LH schema funzionamento Hofmann

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VALVOLE Hofmann by BONINO Engineering srl  
Via Muzzano 31 - 13897 Occhieppo Inf. (BI) Italy
Phone +39 015 2593403  |  Fax +39 015 2593844 |  info@valvolehofmann.com
P.IVA e C.F. IT01640370027