Croft Filters manufactures commissioning and temporary strainers for customers worldwide, supplying industries including oil and gas, power generation, water treatment and chemical processing. These strainers protect pumps, valves and other equipment from welding debris, scale and other particles during system flushing, start-up and commissioning.
Also known as cone filters, conical strainers and witches hat filters, they fit between pipe flanges to capture debris passing through the pipework.
Manufactured to suit your pipework
Croft has been manufacturing metal filters since 1986. We supply commissioning strainers to suit your pipe size, mating flange class and filtration requirements.
Strainers can be supplied in perforated metal only or fitted with a wire mesh lining for finer filtration. Mesh can be fitted internally or externally, depending on the flow direction and application.
Each strainer is manufactured to order, taking into account the pipe bore, available installation space and operating conditions.
Materials, manufacture and quality
We perforate, form and weld our strainers in-house. Available materials include mild steel, stainless steel, copper, brass, Inconel®, Monel®, Hastelloy® and aluminium alloys, subject to availability and suitability for the application.
Croft exclusively uses materials of European or North American origin. Material certification, including 3.1 certification where available, can be supplied on request. Additional non-destructive testing can also be provided.
Generic Drawings
Many of our customers benefit from using our generic drawings to tailor their cone filters to their specifications, whilst also making it easier for them to submit their designs for a quote.
Filtration
Commissioning strainers can be supplied with a wire mesh lining where finer filtration is required. We offer a suggested range of apertures from 150 microns to 2 mm, with other sizes available on request. Whilst we aim to maximise open area to allow for flow, Croft is unable to state pressure drops and flow rates.
Product Benefits:
- Custom manufactured to suit your process.
- Over 40 years’ experience in filtration.
- Quality material used (available with material certification)
