McAlpine TunValve for Cisterns with Soft Overflow

McAlpine Tunvalve Straight-Through Non-Return Valve (19/23 mm)

Product Description

The McAlpine Tunvalve is a straight-through non-return valve designed to prevent backflow and foul odors within plumbing systems. It accommodates boiler or air-conditioning condensate, cold-water cistern discharge, or overflow flows by channeling liquid into waste pipes without allowing reverse air or odors to return into premises.

Key Features

• Connection Size: Universal 19 / 23 mm push-fit connectors – compatible with most standard waste or soil pipes

• Valve Type: Non-return (one-way) valve that allows condensate to flow through while blocking backflow

• Material: Transparent polypropylene body allows visual inspection, with an integrated O-ring seal for leak protection

• Installation Orientation: Designed for vertical installation only and must be placed in a visible position for maintenance

Advantages

• Protects Against Odors: Efficiently prevents foul air from entering building via waste pipework

• Visible Inspection: Clear body lets users confirm proper valve operation and locate blockages easily

• Quick & Tool-Free Fit: Push-fit connectors provide secure fitting without adhesive or threaded joints

• Durable Construction: Corrosion-resistant polypropylene ensures long-term performance in moist environments

Recommended Applications

• Condensate Discharge: Ideal for boiler or AC unit condensate into soil or waste pipe systems

• Cistern or Tank Overflow: Suitable for overflow protection where backflow prevention is needed

• Domestic & Light Commercial Use: Applicable in houses, apartments, offices, or retail buildings

Summary

The McAlpine Tunvalve combines effective one-way protection, simple installation, and inspection capability in a compact, clear-bodied valve. Perfect for ensuring safe, odor-free condensate or overflow drainage in both residential and commercial plumbing setups.

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.