Sight glasses
Sight glasses make visible what otherwise only sensors report: level, flow, discolouration, foaming. In maintenance they are often the fastest diagnosis — provided the glass is clear and the seal intact.
Shipping and delivery: Qatar
- Delivery time (Qatar): up to 27 working days – up to 3 working days of processing at our warehouse in Herten, then up to 24 working days in transit.
- Orders placed by 11:00 German time are processed the same working day.
- Shipping (Qatar) from QAR 284.55 (parcel up to 2 kg).
- Customs duties and import taxes are calculated and charged at checkout
Buying Sight glasses — what matters in the selection
Sight glasses make visible what otherwise only sensors report: level, flow, discolouration, foaming. In maintenance they are often the fastest diagnosis — provided the glass is clear and the seal intact.
shukchok carries sight glass fittings, discs and seals for process and cleaning plants, stating nominal size, material and permissible working pressure.
Because sight glasses are pressure-bearing components, glass type and sealing material are safety-relevant and not a question of price.
Selection criteria
Glass type by load
Borosilicate copes better with thermal shock, soda-lime is cheaper and sufficient for mild conditions. With steam and rapid temperature changes borosilicate is the right choice.
Pressure-temperature curve
The permissible pressure falls considerably with temperature. The figure on the nameplate normally applies at room temperature.
Plan the seal as a wear part
The seal ages faster than the glass. A set of spare seals belongs in the order, not in the next procurement cycle.
Consider cleanability
Fogged or scratched glass is useless. Where deposits form, a version with a flushing connection is the better long-term solution.
Frequently asked questions
Can I replace just the glass disc?
Yes, provided the fitting is designed for it. Disc and seal should always be changed together — a used seal rarely seals reliably on a new disc.
Which glass suits steam applications?
Borosilicate. It withstands thermal shock considerably better than soda-lime glass, which can crack on rapid cooling.
Are sight glasses subject to mandatory inspection?
As a pressure-bearing component they fall under the rules for the pressure section of the plant. Classification is made by your competent person; the technical data per item provides the basis.
Can I order sight glasses on account?
Card payment, Apple Pay and Google Pay are available immediately. Purchase on account and prepayment by bank transfer are in preparation for business customers and will be available shortly. If a card declines a larger amount, please contact us — we handle those orders individually.
How quickly are sight glasses delivered?
4 items in this category are currently listed as available. There is no blanket delivery time — it depends on the item, and stock goods, made-to-order parts and special versions differ considerably. The figure that applies is stated on the product page.
Do I get technical data sheets for sight glasses?
Yes. Data sheets, dimensional drawings and manuals are — where provided by the manufacturer — filed under “Downloads” on each product and accessible without an account. If a document is missing we will supply it on request.
Who is my contractual partner when I order?
It is stated on the line. For own goods shukchok is the seller and contracting party; where a named supplier lists the product, the supplier is, and we invoice in their name and for their account (clause 2 of the terms). The ordering process and your contact in support are the same either way.
Can I return sight glasses?
Unused stock items can be returned within the statutory and contractual rules. Items made or configured to customer specification are excluded from return. Please register a return in advance so we can allocate the process.