McAlpine ST90CPB-P Shower Drain Waste with Flush Chrome Brass Grid Top

McAlpine ST90CPB-P Shower Drain Waste with Flush Chrome Brass Grid Top

Features

This genuine McAlpine shower drain waste is a professional-grade, high-integrity drainage system engineered for high-end modern shower enclosures. Bearing the manufacturer part number ST90CPB-P, this premium trap is designed specifically to fit shower trays with a standard 90mm waste hole. Unlike standard protruding covers, it features an ultra-sleek, flush-mounted chrome-plated solid brass top flange that sits completely level with your tray surface. This high-spec top includes a removable center grid insert, allowing for effortless hair removal and cleaning directly from above. Built from robust polypropylene with a compact 82mm under-tray dimension, it comes supplied with a 135-degree swivel bend to ensure an completely secure, leak-free connection.

• Genuine McAlpine professional plumbing hardware proudly manufactured in the UK
• Designed specifically for modern shower trays with a standard 90mm waste hole
• Premium flush-mounted chrome-plated solid brass top provides a luxury, seamless look
• Removable center grid insert facilitates incredibly easy cleaning and hair removal
• Compact 82mm under-tray height fits comfortably within standard floor voids
• Supplied with a versatile 135-degree directional bend and 1.5″ universal coupling nut
• Delivers a steady flow rate of 26 litres per minute under a constant water head
• Manufactured from high-impact polypropylene and fully conforms to EN 274-1:2002

Technical

• Brand: McAlpine
• Part Number: ST90CPB-P
• Tray Hole Compatibility: 90mm Diameter Waste Hole
• Flange Type: Flush-Mounted with Removable Center Grid
• Flange Material: Premium Chrome-Plated Brass
• Overall Under-Tray Height: 82mm
• Water Seal Depth: 50mm
• Outlet Connection: 1.5″ BSP Thread / Universal Coupling
• Included Fitting: 135-Degree Bend (BSP Coupling Nut x 1.5″ Universal)
• Flow Rate: 26 Litres per Minute (Tested under constant 15mm head)
• Material: Rigid Polypropylene and Solid Brass
• Certification: Conforms to BS EN 274-1:2002 and BS EN 274-2:2002

Details

Standard shower wastes with protruding dome caps can be incredibly frustrating. Not only do they create an annoying, uneven surface to step on, but lightweight plastic covers can easily crack under foot pressure. Furthermore, standard designs tend to hide hair accumulation deep within the trap body, making maintenance a slow, messy chore that eventually chokes your water flow. As water builds up, it places continuous pressure on your tray’s silicone seals. Consequently, this inadequate setup leads to hidden tracking leaks, rot inside your structural timbers, and incredibly expensive ceiling damage to the rooms below.

Fortunately, installing this flush-mounted McAlpine shower drain waste eliminates both design flaws and maintenance headaches completely. Specifically, the heavy-duty chrome-on-brass top flange mounts perfectly flush with the tray floor, creating a safe, sleek, and durable surface that handles heavy daily usage without flexing. Additionally, clearing out blockages is entirely trouble-free: the middle grid insert simply lifts right out from above, allowing you to catch hair and debris before it ever enters your pipework. Combined with a robust 26L/min flow rate and an adjustable 135-degree swivel bend, you get a clean, premium, and permanently watertight installation.