Process Level Gauges

Process Level Gauges

John Moncrieff Ltd were one of the innovators of the Reflex level gauge and the group has since developed into a world market leader in glass level gauge technology.

John Moncrieff Ltd were innovators in the development of the Reflex/Process level gauge and  has since developed into a world market leader in glass level gauge technology.

Today John Moncrieff  supplies the most comprehensive range of Liquid level gauges suitable for the varied needs of the modern process plant. We supply level gauges to suit virtually any application, available in single or multi-sections, with a variety of shut-off valves, cocks and accessories.

TECHNICAL INFORMATION

REFLEX

Process Level Gauges are available in the range ANSI Class 150 to ANSI Class 1500, it is particularly suited for low pressure steam boilers, gas liquefaction plants, reactors or storage vessels.

Reflex Process Level Gauges

Reflex Level Gauge is available in the range ANSI Class 150 to ANSI Class 1500, it is particularly suited for low pressure steam boilers, gas liquefaction plants, reactors or storage vessels.

The Reflex glass allows light to be absorbed in the liquid space giving a dark appearance and reflected in the gas space, thereby providing a clear indication of the liquid level.
Product Details:
  • Steam pressures up to 22 Bar
  • Direct viewing of liquid through the glass
  • Distinct black and silver indication
  • Reliable performance on cyclic duty
  • Top and bottom safety shut off ball checks
  • Left or right handed gauges available.
Transparent Process Level Gauges

TRANSPARENT

Transparent Level Gauge is perfectly suited for viscous, interface and coloured liquids.

Transparent Level Gauge is perfectly suited for viscous, interface and coloured liquids.
With two pieces of glass on opposite sides of the chamber, light passes through the transparent level gauge allowing the liquid position to be detected, whilst also monitoring the liquid’s characteristics e.g. viscosity.
For gauges being used in corrosive or steam environments, shields are available to protect the glass. –

Product Details:

  • Steam pressures above 22 Bar and up to 120 Bar
  • Mica glass protection options avaialable
  • Direct viewing of liquid through glass
  • Illuminator options for viewing in dark areas
  • Right or left hand operation options
  • Ball checks are fitted to both top and bottom
  • Pressures up to ANSI 1500 (250 Bar)
  • Temperature range -196°C to +400°C

ILLUMINATORS

EEx rating according to type of lamp used. Supplied with aluminium housing for corrosive applications.

Illuminators Process Level Gauges

EEx rating according to type of lamp used. Supplied with aluminium housing for corrosive applications A light diffuser is mounted to concentrate the light onto the level gauge Voltage 110-230V AC (max 380V) EEx approval ISS and P # 98D, 103, 1283/970, 103, 124 Supplied with Plexiglas or glass Supplied with either incandescent of compact fluorescent lamps.

Product Details:

  • EEx rating according to type of lamp used
  • Supplied with aluminium housing for corrosive applications
  • A light diffuser is mounted to concentrate the light onto the level gauge
  • Voltage 110-230V AC (max 380V)
  • EEx approval ISS and P # 98D, 103, 1283/970, 103, 124
  • Supplied with Plexiglas or glass
    Supplied with either incandescent of compact fluorescent lamps.
Process Valves & Cocks

PROCESS VALVES & COCKS

There are two types of shut off devices – RAV gauge valves and DG gauge cocks.

There are two types of shut off devices – RAV gauge valves and DG gauge cocks. RAV gauge valves have metal seats and an integrated safety ball. The DG gauge cock is a more economical solution for simpler situations, with a replaceable packing sleeve and swift 90 Deg turn shut-off.

Product Details:

  • RAV gauge valves have metal seats and an integrated safety ball. The DG gauge cock is a more economical solution for simpler situations, with a replaceable packing sleeve and swift 90 Deg turn shut-off.
  • The RAV shut off type with metal seats
  • Option 1 offered with handwheel ANSI 1500
  • Option 2 offered with weighted lever ANSI 900
  • Option 3 offered with double end lever ANSI 900
  • Option 4 offered quick closing handwheel ANSI 900
  • The DG Gauges cock with replaceable packing sleeve and 90˚ operation ANSI 900
  • Materials body A105 or 316L with trim in stainless steel 316

Capacity

Moncrieff offer both hand, semi automatic and fully automatic blowing facilities. This makes us perhaps the most versatile pressed glass company. Offering volumes from a tens up to tens of thousands of units. All with the assurance of 150 years of experience.

Service

At John Moncrieff Ltd we are equally happy dealing with large PLC as we are smaller concerns, all are treated with the same dedication to quality and customer service.

Enquiries

We invite you to send your enquiries. In the first instance please contact us with a drawing or sketch, outlining the usage conditions and an indication of production volumes.