Sight glass for industrial applications Type 392

for vesselsmonitoringstainless steel

Circular sight glass fitting Type 392 is a screwed sight glass with an external (male) thread for screwing in, designed for monitoring liquid and gaseous media in tanks and vessels. The fitting is manufactured in stainless steel 1.4571 (316Ti) and fitted with borosilicate glass (DIN 7080); numerous sealing and protection options are available.

Key features

• Housing material: stainless steel 1.4571 (316Ti)
• Sight glass: borosilicate glass according to DIN 7080 (or per customer requirement)
• Connection: external / male thread (screwed fitting)
• Applications: for liquid and gaseous media in tanks and vessels
• Max. working pressure: up to 160 barg (depending on configuration)
• Nominal sizes (NPS): ½" – 2"

Available nominal pressures (PN)

• PN 16
• PN 40
• PN 63
• PN 100
• PN 160

Temperature options

• Standard/product-related temperature resistance indicated up to 280 °C (quick overview)
• Additional selectable temperature options: 80 °C, 130 °C, 150 °C, 175 °C, 180 °C, 200 °C, 280 °C, 300 °C, 320 °C, 400 °C (depending on glass type, protective measures and customer requirements)

Options

• Wiper SGW with PTFE or silicone wiper blade
• FEP or Halar® coating for chemical protection
• Mica protection disc for additional temperature/steam protection
• Special constructions / customised designs upon request

Sealing materials

• Flat gaskets from a comprehensive range (fiber materials and branded seals) including PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400 and many others — more than 50 sealing materials available

Accessories (examples)

• Sight glass wiper (manual cleaning)
• FEP protective screen / coating
• Round mica discs

Characteristics / Specifications

• Model: Type 392
• Housing material: stainless steel 1.4571 (316Ti)
• Glass: borosilicate glass (DIN 7080) or per customer requirement
• Connection type: external (male) threaded base flange for screwing in
• Nominal sizes (NPS): ½" , 1" , 1½" , 2"
• Nominal pressure (PN): 16, 40, 63, 100, 160
• Temperature: standard resistance up to 280 °C; extended options available up to 400 °C with appropriate protective measures
• Max. pressure (quick overview): max. 160 barg (configuration dependent)
• More than 50 sealing material options and many accessories available; custom manufacturing possible
• Dimensions (selected examples from drawing table):
  • PN 16 — G ½": Da 70 mm, Di 15 mm, L 20 mm, Weight 0.7 kg
  • PN 16 — G 1": Da 95 mm, Di 25 mm, L 20 mm, Weight 1.4 kg
  • PN 16 — G 1½": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.1 kg
  • PN 16 — G 2": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.1 kg
  • PN 63 — G ½": Da 95 mm, Di 15 mm, L 20 mm, Weight 1.3 kg
  • PN 63 — G 1": Da 95 mm, Di 25 mm, L 20 mm, Weight 1.5 kg
  • PN 100 — G ½": Da 70 mm, Di 15 mm, L 20 mm, Weight 0.7 kg
  • PN 100 — G 1": Da 95 mm, Di 25 mm, L 20 mm, Weight 1.5 kg
  • PN 100 — G 1½": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.2 kg
  • PN 100 — G 2": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.2 kg
  • PN 160 — G ½": Da 70 mm, Di 15 mm, L 20 mm, Weight 0.7 kg
  • PN 160 — G 1": Da 95 mm, Di 25 mm, L 20 mm, Weight 1.7 kg
  • PN 160 — G 1½": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.6 kg
  • PN 160 — G 2": Da 110 mm, Di 40 mm, L 20 mm, Weight 2.6 kg
• Other sizes and pressure levels available upon request; installation via hook wrench as for DIN 11851