WM3 McAlpine 1.5" Washing Machine Standpipe Trap The McAlpine WM3 is a purpose-built standpipe trap designed for washing machine discharge lines. This 1.5" (40mm) trap prevents siphoning and backflow whilst maintaining optimal drainage performance. The integral air break and anti-siphon design protect your appliance and plumbing system from water damage and contamination. Suitable for both domestic and commercial installations, the WM3 offers reliable, code-compliant drainage with straightforward installation. An essential component for any washing machine setup requiring proper waste water management and compliance with UK building regulations.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
