Flow Control - Strainer
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Strainer
Derwent Industries manufacture and distribute under the Derwent brand a variety of Strainers
Strainer Product Comparison
| Strainer Model | Material & Coating | Pressure / Class Rating | Key Features & Connections |
|---|---|---|---|
| AS105F Series | Cast Iron with Fusion Bonded Epoxy (FBE) | Standard Waterworks Rating | Stainless steel screen & fasteners, low pressure drop, drain/flush plug. |
| FRV PVC | Thermoplastic (PVC) | Food & Potable Water Standards | Food-grade compliant, lightweight, in-line filter screen maintenance. |
| VT-YF-316-150 | 316 Stainless Steel (Investment Cast) | Class 150 | Integrated flush port, supplied undrilled for custom flange drilling. |
| VTY Series | Stainless Steel | Class 800 (800 W.O.G.) | Threaded connections (NPT, BSPT, DIN259, ISO 228 Class A) for high-pressure service. |
FAQ
What types of strainers does Derwent Industries manufacture and supply?
Derwent Industries offers a diverse range of Y-Strainers manufactured from high-grade metals and thermoplastics to protect downstream piping equipment, pumps, and valves from solid contaminants:
- AS105F Series: Cast Iron Y-Strainer featuring Fusion Bonded Epoxy (FBE) coating, stainless steel screen and fasteners, low pressure drop design, and a drain/flush plug in the lid for easy maintenance.
- FRV PVC Y-Strainer: High-grade thermoplastic strainer designed to remove suspended solid impurities. Complies with food-grade and drinking water standards, allowing in-line maintenance without removing the body from the pipe.
- VT-YF-316-150 Series: Class 150 Stainless Steel Y-Strainer featuring precision investment casting and an integrated flush port. Supplied undrilled to allow custom drilling to suit specific site flange standards.
- VTY Series: Class 800 high-pressure Stainless Steel Y-Strainer rated to 800 W.O.G. (Water, Oil, Gas), with pipe thread compliance across NPT, BSPT, DIN259, DIN2999, and ISO 228 Class A standards.
What are the primary functions and applications of Y-strainers in fluid management?
Y-strainers are essential mechanical filters installed in pipelines to capture solid debris, scale, rust, and particulates:
- Potable Water & Foodstuffs: Thermoplastic FRV PVC strainers meet strict food-grade and drinking water regulations for clean liquid transport.
- Pump & Valve Protection: Cast iron (AS105F) and stainless steel (VT-YF / VTY) strainers shield sensitive equipment like meters, control valves, and pumps from particulate damage and clogging.
- High-Pressure & Industrial Lines: Stainless steel Class 800 threaded strainers suit demanding industrial processing, oil, water, and gas (W.O.G.) systems up to 800 PSI.
How do the maintenance and flush features work on Derwent Industries strainers?
To minimize operational downtime, Derwent Industries strainers feature built-in maintenance capabilities:
Drain / Flush Plugs: Models like the AS105F and VT-YF-316-150 include flush ports/plugs in the bonnet lid, allowing operators to flush out trapped sediment without fully disassembling the valve body.
In-Line Servicing: The FRV PVC Y-Strainer allows filter screen removal and cleaning while the main body remains fixed within the pipeline.