Heat Pump Barrel Union – Nut & Tail Pair | Madimack, Astral iHP, Sensaheat & Others (20000-130096)

Replacement heat pump barrel union nut and tail pair — part no. 20000-130096 (also known as SH-19314). Suits a wide range of pool heat pumps including Madimack, Astral Pool iHP, Sensaheat, and many others that use the same barrel union plumbing connection. Supplied as a pair: 2 nuts and 2 tails.

Barrel unions are the plumbing fittings that connect the heat pump’s water inlet and outlet ports to the pool’s pipework. They allow the heat pump to be disconnected from the plumbing without cutting pipes, making servicing and replacement straightforward.

Key Features

• Supplied as a pair — 2 nuts and 2 tails (inlet and outlet)
• Suits Madimack, Astral Pool iHP, Sensaheat, and compatible heat pumps
• Black UV-stabilised plastic construction
• Direct replacement — no modification required

Compatibility

• Madimack heat pumps
• Astral Pool iHP heat pumps
• Sensaheat heat pumps
• Other heat pumps using the same barrel union connection (check your existing fitting dimensions before ordering)

Product Details

• Part number: 20000-130096
• Also known as: SH-19314
• SKU: 8008060100002SP
• Supplied: 2 nuts + 2 tails (pair)
• Weight: 0.5 kg

Frequently Asked Questions

When do barrel unions need replacing?

Barrel unions should be replaced if they are cracked, leaking at the joint, or if the threads are stripped and the union can no longer be tightened to form a watertight seal. O-ring deterioration is a common cause of leaks at the union — check whether replacing the O-ring alone resolves the leak before replacing the full union. If the plastic body is cracked or the threads are damaged, replace the full union pair.

How do I know if this union fits my heat pump?

This union (20000-130096 / SH-19314) is confirmed to suit Madimack, Astral Pool iHP, and Sensaheat heat pumps. For other brands, compare the thread size and pipe diameter of your existing union with this part before ordering. If you are unsure, contact us with your heat pump brand and model and we can confirm compatibility.

Is this a genuine OEM part?

This part is supplied as a compatible replacement for the listed heat pump brands. Contact us if you require confirmation of OEM vs compatible status for your specific application.