CIRCULAR SIGHT GLASS – MAIN SECTION 2017-12-13T22:48:49+00:00

Circular Sight Glass

John Moncrieff Ltd are delighted to announce that we are working with Max Muller AG for Circular Sight Glass Assemblies,Process Illumination and visual observation systems in the UK.

Max Muller AG have over 75 year experience in the field, and can offer solution for most observation requirements.

Circular Sight Glass | Products

SCREWED DAIRY SIGHTGLASS FITTINGS
Especially suited for use in food processing, cosmetic and pharmaceutical applications where a product or process has to be observed or controlled inside stirred vessels, tanks, dryers, columns, centrifuges, mixers, evaporators, etc.

MOUNTING:
The circular section welding nozzle is welded onto the vessel wall.

NOMINAL SIZES:
From DN 50 (with a free view of 50 mm) to DN 150 (with a free view of 150 mm).

OPERATING CONDITIONS:
Nominal pressure rating 6 bar maximum and vacuum. Temperatures of up to 150°C with sodium silicate glass to DIN 8902 or up to 280°C with borosilicate glass to DIN 7080, thus allowing sterilisation.

MATERIALS:

  • Welding nozzle in stainless steel 316L (1.4404)
  • Grooved collar nut in stainless steel 304 (1.4301) or 304 L (1.4307)
  • Gasket product side: Silicone (or PTFE, Viton, EPDM [On request with FDA approval])
  • Gasket cover side: PTFE

CERTIFICATES:

To be supplied against extra charge to DIN EN 10204

SPECIAL VERSIONS:

  • Thick walled welding nozzle (to old DIN standard)
  • Welding nozzle in other materials
  • Welding nozzle Hastelloy – plated
  • Adaptation to “Tri-clamp” system
  • Glass disc from Quartz or Macrolon

CIRCULAR SIGHTGLASS FITTINGS FOR PRESSURE RATINGS PN 0
(LIGHTWEIGHT VERSION)
Used where a product or process has to be observed or controlled inside: stirred vessels, tanks, dryers, columns, silos, centrifuges, mixers, evaporators, pipelines.

MOUNTING:
The circular flange or pad is welded into or onto the vessel wall.

NOMINAL SIZES:
From DN 50 (with a free view of 80 mm) to DN 200 (with a free view of 225 mm). Larger sizes on request.

OPERATING CONDITIONS:

  • Nominal pressure rating: 0 bar (PN 0, pressureless)
  • Vacuum
  • Temperatures of up to 150°C with sodium silicate glass to DIN 8902 or up to 280°C with borosilicate glass to DIN 7080.

MATERIALS:

  • 1.4571, 1.4541, 1.4404 / RSt 37-2, H II / Hastelloy and other materials
  • Gaskets: KLINGERsil C4400, PTFE, Silicone, Viton, GYLON, EPDM

CERTIFICATES:
To be supplied against extra charge to DIN 50049, for flanges and glass discs

CIRCULAR SIGHT GLASS FITTINGS TO DIN 28120 OR SIMILAR
FOR PRESSURE RATINGS FROM PN 2.5 TO PN 16

Capable of stopping nearly all the radiation if UV-B & UV-C and a big proportion of UV-A. With maximum visible lights, the Ce doped quartz tube can serve as the material of halogen lamps, high density discharge lamps and other UV lights. Thus, it can effectively prevent harm to the skin of people and objects that have to be under explosion of UV radiation and set out the maximum visible light at the same time.

MOUNTING:
The circular flange or pad is welded into or onto the vessel wall.

NOMINAL SIZES:
From DN 25 (with a free view of 48 mm) to DN 200 (with a free view of 225 mm). Larger sizes on request.

OPERATING CONDITIONS:
Nominal pressure ratings of 2.5, 6, 10 and 16 bar. Vacuum. Temperatures of up to 150°C with sodium silicate glass to DIN 8902 or up to 280°C with borosilicate glass to DIN 7080.

MATERIALS:

  • Flanges: Stainless steels, boilerplate, Hastelloys and exotic specials
  • Gaskets: KLINGERsil C4400, PTFE, Silicone, Viton, GYLON, EPDM

CERTIFICATES:
To be supplied against extra charge to DIN EN 10204

SPECIAL VERSIONS:

  • Double glazed safety version with or without internal heating element to prevent crystallisation or condensation
  • Special glass qualities, e.g. Quartz, fused glass and seal qualities on request
  • High vacuum-tight version
  • Base flange machined for glass lining or rubber covering

CIRCULAR SIGHT GLASS FITTINGS TO DIN 28121 OR SIMILAR
Used where a product or process has to be observed or controlled inside stirred vessels, tanks, dryers, columns, silos, centrifuges, mixers, evaporators, pipelines.

MOUNTING:
The pre-mounted circular flange assembly is bolted directly onto a welded pad or nozzle.

NOMINAL SIZES:
From DN 40 (with a free view of 48 mm) to DN 200 (with a free view of 150 mm).

OPERATING CONDITIONS:
Nominal pressure ratings of 10 and 25 bar. Vacuum. Temperatures of up to 280°C with borosilicate glass to DIN 7080.

MATERIALS:

  • Flanges: Stainless steels, boilerplate, Hastelloys and exotic specials
  • Gasket product side: PTFE enrobed metal gasket ring
  • Gasket cover side: KLINGERsil C4400

CERTIFICATES:
To be supplied against extra charge to DIN EN 10204

SPECIAL VERSIONS:

  • Double glazed safety version with or without internal heating element to prevent crystallisation or condensation
  • Available with lined base flange (typically with PTFE / PFA)
  • Glass lined version
  • Adaptations to suit ANSI 150 lbs / 300 lbs and other flange fittings
  • Special glass qualities, e.g. Sodium silicate to DIN 8902 or Quartz, fused glass and seal qualities on request

RECTANGULAR SIGHTGLASSES RSG (R, RR)
“D” ENDED, ELONGATED SIGHTLGASSES LSG (R, RR)

Used for the observation of the liquid level, interface or a reaction within stirred vessels, reactors, silos, storage tanks, dryers, columns, evaporators etc. in all process industries.

MOUNTING:
The base frame is welded into or onto a vessel wall.

NOMINAL SIZES:

  • Rectangular: Various lengths available from 170 x 70 mm offering a view of 120 x 18 mm to 1000 x 70 mm offering a view of 4 x 204 x 18 mm
  • D-ended: Depending on nominal pressure, offering an uninterrupted view from 121 x 15 mm up to 725 x 50 mm.

CONDITIONS OF SERVICE:
Rectangular units are rated 16 bar and vacuum. D-ended units are available for 2.5 / 6 / 10 / 25 bar. Temperatures of up to 100°C with sodium silicate glass to DIN 8903 or up to 243°C with borosilicate glass to DIN 7081.

MATERIALS:
Rectangular:

  • Base frame in stainless steels 316Ti (1.4571) or 321 (1.4541) or boilerplate
  • Cover frame: As base frame
  • Seals: Neoprene, KLINGERsil C4400, PTFE, Viton

D-ended:

  • Base frame in stainless steel 316L (1.4435), boilerplate or Hastelloy
  • Cover frame in stainless steel 304 (1.4301), boilerplate or Hastelloy
  • Seals: KLINGERsil C4400, EPDM, Silicone, PTFE
  • Glass to DIN 8903 or 7081. Transparent for D-ended units, fluted (Reflex) for rectangluar units.

CERTIFICATES:
To be supplied against extra charge to DIN EN 10204

SPECIAL VERSIONS:

  • Special dimensions
  • Closed back (base frame) version with drilled and tapped holes at the ends for pipe connections
  • Version with double glasses
    D-ended:
  • Base frame with bolt tappings drilled through
  • Base frame with blind tappings

IMPORTANT REMARK:
The nominal pressure indicated refers to the design base of the sightglass. When welded into the vessel concerned, the base frame becomes part of the vessel wall. It is necessary, therefore, that appropriate strength calculations are made on all vessels concerned with the respect to the design pressure and size of the vessel and in accordance with the relevant design code. If found to be necessary, reinforcement of the vessel wall has to be carried out.

Hinged Sight Glass | Products

HINGED SIGHT GLASSES SERIES KSG
HINGED ILLUMINATED SIGHT GLASSES SERIES, KSGB

Hinged sight glasses provide an easy yet quick opening sightglass units with or without illumination, but in the case where the addition of some components is required or samples are needed to be taken in frequent or regular manner. However, the use of circular sight glass fittings is restricted to the safe areas.

Mounting: –
Circular flanged is connected or welded onto or into the wall of the vessel.

Normal sizes:-
Available in two sizes KSG(B) 200 and KSG(B) 125 with OD of 335 mm and 250 mm respectively.

Viable operating conditions:-

  • KSG (B) 125 is restricted to the pressure of 1 bar
  • KSG (B) 200 is restricted to the pressure of 0.5 bar
  • 200°C maximum temperature with glass disc to borosilicate (DIN 7080)
  • 150°C maximum temperature with glass disc to sodium silicate (DIN 8902)

Material Used:

  • Gaskets: Silicone
  • Welding Flangs: – Carbon steel RSt 37.2 and Stainless steels 316 Ti, 304, 316 L
  • Opening Part: Erosion sturdy aluminum casting
  • Closing part: steel, Aluminium, zinked casting

ELECTRICAL DATA:

  • Supply: AC or DC
  • Terminal voltage: 24 V (12 V possible)
  • Nominal rating: 50 or 100 W
  • Bulbs: Halogen, socket GY 6.35

PROTECTION DEGREE:
IP 65

SPECIAL VERSIONS:

  • Opening part acryl painted, nickel or stainless steel plated
  • All stainless steel high pressure construction (up to 10 bar)
  • Seals in Viton, PTFE or other materials
  • Light fittings of the series CHEMLUX ((F)KEL (PowerLED) / (F)LKEL / (F)HEL (LED)) or EdelLUX for use in hazardous areas
  • Light fittings of the series KL (PowerLED) / FHL (LED) / KLR for safe area use with 230 V supply

Metal Fused Sightglasses | Products

METAL FUSED SIGHTGLASSES
Metal fused sightglasses for Triclamp und NA-Connect connections. Metal fused sightglass flanges for sterile applications.

ADVANTAGES:

  • High security
  • For sterile applications

VERSIONS:

Metal fused sightglasses for Triclamp fittings:

  • for mounting on Triclamp fittings to DIN 32676 / ISO 2852
  • available from DN 10 to 300
  • available with built-in wiper, series WD (DN 150 to 300)

Metal fused sightglasses for NA-Connect conncections:

  • for mounting on NA-Connect connections
  • available from DN 10 to 100 as well as 1/2″ to 4″

Metal fused sightglass flanges for sterile applications:

  • for mounting on base flanges to DIN 28117 or similar or on weldnecks with flat face
  • available from DN 50 to 200

OPERATING CONDITIONS:
Nominal pressures:

  • PN: – 1 to 6 / 10 / 16 / 25 bar (depending on nominal diameter)
  • PN: 7 (NA-Connect)
  • PN: -1 to 6 bar with built-in wiper

Maximum operating temperatures:

  • with ring material 1.4462: – 30 to + 280 °C
  • with ring materials 2.4602, 2.4605 and 2.4610: – 60 to + 300 °C
  • with built-in wiper series WD: 150 °C

MATERIALS:

  • Ring: 1.4462, 2.4602, 2.4605, 2.4610
  • Glass quality: Borosilicate glass to DIN 7080

MANUFACTURED AND TESTED IN CONFORMANCE WITH:

  • DGRL 97 / 23 / EG, AD 2000 standards, DIN 7079-1 May 1999
  • Materials to VdTÜV specifications and the respective DIN / EN standards

CERTIFICATES:
To be supplied against extra charge to DIN EN 10204