Project Description

Style T Sight Glass Tube

This straight through tube sight glass is ideal for you to visually check the presence, colour and condition of a liquid.

  • 360° all round view
  • High quality design
  • CE marked and fully PED compliant
  • Pressures up to 10 bar
  • Temperatures up to 150°C
  • Short lead times
  • Designed and manufactured in the UK


The style T sight glass has a plain straight through borosilicate glass tube with stainless steel flanged ends and is
used to check for the presence of a liquid where there is intermittent flow, partially filled lines or entrained air. It
can be used in vertical or horizontal lines.


The standard flanges available are ANSI 150 and PN16, machined from 316 stainless steel though other flange specifications and materials can be supplied. The flanges are held in place by stainless steel tie rods and fasteners that give it a rigid construction. The standard seals are viton giving superior protection.
We fit a perspex safety shield as standard round the glass tube to protect against accidental damage.


The flow indicators can be manufactured to specific lengths if required and alternative seal materials are available.


All Flowpoints indicators are manufactured to the highest standards. The quality system is independently audited by BSI and certified to ISO 9001. The indicators are fully PED compliant and CE marked where required. TUV are our external auditors for the Pressure Equipment Directive.
Full material traceability is maintained and material certificates and pressure test certificates are supplied on

Specification Code

Materials of Construction

– 316 Stainless steel
Glass Tube
– Borosilicate
O Ring Seals
– Viton
Tie Rods
– Stainless steel
– A2 Stainless steel