Masoneilan 49000 Series V-LOG™ Low-Noise Anti-Cavitation Valve

• Size

  4” through 36” (100 through 900 mm)

  Ratings & Connections

  flanged: ANSI 150-2500, UNI-DIN 10 - 400; welded: BW

  Body Materials

  carbon steel; stainless steel; chrome-moly

  Actuators

  model 37/38 spring-opposed diaphragm; model 87/88 multi-spring-opposed diaphragm; cylinder

  Trim

  single or double stage Lo-dB and V-LOG energy management trim; low noise flow-to-open designs or anti-cavitation flow-to-close

  Inherent Characteristics

  linear or equal percentage

  Description

  The 49000 Series V-LOG high pressure drop valve features an enlarged body gallery to accommodate gas expansion and up to 36 stages of pressure reduction via a stacked disk trim design. It offers optimized severe service solutions for high-pressure drop applications with potential damaging noise or cavitating fluid conditions. Built around the Masoneilan V-LOG Energy Management Trim, the 49000 Series is capable of handling a wide range of both liquid and gas services in a variety of process industries.

  Benefits of the 49000 Series V-LOG high pressure drop valve include: 

  • Compared to forged or fabricated bodies, the cast globe-style body of the 49000 Series offers lower in weight and overall dimensions which helps reduce installation costs.
  • Enlarged body galleries and expanded outlets provide velocity control for expanding gases.
  • Galleries sized to accept "typical" V-LOG trim dimensions for a standardized body platform and an optimized solution.
  • V-LOG trim for use with either compressible or incompressible fluids under severe service conditions.
  • V-LOG and Lo-dB trim provide reduced noise and cavitation that could negatively affect the valve and/or surrounding equipment.

  The V-LOG Trim can be configured for use with either compressible or incompressible fluids under severe service conditions making the 49000 Series valve a superior choice for liquid and gas applications including:

  • Boiler feed water start-up and control 
  • Steam letdown
  • Pump discharge 
  • Water reinjection
  • Gas recycle