McAlpine 1.5" Washing Machine Trap with Air Admittance Valve
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Free Local Shipping on orders over £100. Standard delivery to most UK postcodes within 2-3 working days. Express options available at checkout.
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McAlpine 1.5" Washing Machine Trap with Air Admittance Valve is a reliable plumbing component designed to provide efficient, quiet and odour-free wastewater management for domestic appliances such as washing machines and dishwashers. Featuring an anti-syphon mechanism and a 75mm water seal, this trap helps prevent siphonage, maintain the water seal and reduce unpleasant gurgling noises during drainage.
1.5" / 38mm
75mm
Polypropylene
Washing Machine / Dishwasher
The integrated anti-syphon mechanism helps prevent loss of the water seal caused by siphonage, reducing the risk of unpleasant odours and drainage noise.
Designed to minimise gurgling noises during appliance drainage, helping provide quieter operation in domestic plumbing installations.
The compression outlet is suitable for plastic, copper and lead pipe connections, providing flexibility during installation.
The swivel 'P' trap design allows straightforward fitting and alignment when connecting domestic appliances to the waste system.
Specifications
| Brand | McAlpine |
| Product type | Washing Machine Trap with Air Admittance Valve |
| Size | 1.5" / 38mm |
| Inlet / outlet | 1.5" / 38mm |
| Water seal depth | 75mm |
| Material | Polypropylene |
| Trap design | Swivel 'P' trap |
| Connection type | Multifit compression outlet |
| Compatible pipe materials | Plastic, copper and lead |
| Anti-syphon | Yes |
| Standards | BS EN 274-1:2002 |
| Application | Washing machines and dishwashers |
| Pack quantity | 1 |
Installation & maintenance
The McAlpine washing machine trap is designed to connect between a domestic appliance waste outlet and the household drainage system. The Multifit compression connection provides compatibility with several common pipe materials, while the swivel 'P' trap design allows easier positioning during installation. Periodic inspection and cleaning are recommended to help maintain efficient drainage and minimise the risk of blockages.
Compatibility & next steps
This trap is suitable for domestic washing machines and dishwashers where a 1.5" / 38mm waste connection is required. Before installation, check the appliance waste outlet, available space, pipe size and connection type to ensure compatibility with the existing waste system.
At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.
🆓 Free Local Delivery (Orders £100 & above)
We offer FREE delivery on orders £100 or more
for selected local areas.
Eligible Postcodes Include:
- RG*
- SL*
- OX10*, OX11*, OX49*
- HP1*, HP3*, HP8*, HP9*, HP10*, HP11*, HP12*, HP13*, HP14*
- WD*, HA*, UB*, TW*, KT*
- W1* – W9*
- NW*, SW*
Delivery Time: 2–4 working days
Shipping Cost: £0.00
📦 Standard Shipping (Weight-Based Rates)
For orders that do not qualify for free delivery, standard
shipping rates apply based on total cart weight.
- For cart weight between 0–2 kg, the shipping cost is £4.50 with a delivery time of 2–4 working days.
- For cart weight between 2–24 kg, the shipping cost is £9.99 with a delivery time of 2–4 working days.
- For cart weight between 24 kg and above, the shipping cost is £60 with a delivery time of 2–4 working days.
🧱 Block Salt (Harvey’s) – Unit-Based Shipping
This rate applies only to Harvey’s block salt products.
- £7.99 is charged for every 3 items.
- The charge increases by £7.99 for each additional set of 3 items.
Examples:
- 1–3 items → £7.99
- 4–6 items → £15.98
- 7–9 items → £23.97
Delivery Time: 2–4 working days
📏 Large / Long Items (Length-Based Shipping)
For oversized items where the product length is 1.5 metres or more:
Conditions:
- Product length ≥ 1.5 m
- Cart weight ≤ 40 kg
Shipping Cost: £18.00 (flat rate)
Delivery Time: 2–4 working days
Collection from Store
Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge. For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.
