Insnrg 50mm Union Assembly Kit – Lock Nut, Tail & O-Ring (152001)

Genuine Insnrg 50mm Union Assembly Kit — part no. 152001 (supersedes 15201001). A complete 3-piece union assembly for all 50mm (2-inch) threaded connections on Insnrg pool equipment, including pumps, filters, salt chlorinators, and UV sanitisers. The union provides a removable, watertight pipe connection that allows equipment to be disconnected from the plumbing for servicing or replacement without cutting pipes.

Kit Contents

• 1 × Threaded lock nut – grey (21C01400001)
• 1 × Tail union – white (10C01405001)
• 1 × O-ring seal – red (15101603000)

Compatible Insnrg Equipment

Suits all Insnrg pool equipment with 50mm (2-inch) threaded union connections, including:

• Pumps: Ci 100, Ci 150, Ci 200, Ci 250, Qi 1100, Qi 1800, Zi 1400, Mi 250, Mi 320, Mi 350, Mi 400
• Filters: Si 200, Si 300, Si 400, Si 500
• Chlorinators: Li series, Di series
• UV sanitisers: UVi series

Product Details

• Genuine Insnrg spare part — not aftermarket
• Part number: 152001 (old part number: 15201001)
• Connection size: 50mm (2 inch)
• Colour: Grey lock nut / White tail / Red O-ring
• Quantity: 1 complete kit (3 parts)
• SKU: 3KitINSNRG

Frequently Asked Questions

What does a pool equipment union do?

A union is a two-part threaded fitting that connects pool equipment (such as a pump or filter) to the pool plumbing. One half (the tail) is glued to the pipe; the other connects to the equipment port. The two halves are secured with a threaded lock nut, compressing the O-ring to create a watertight seal. The key benefit is that the union can be unscrewed by hand to disconnect the equipment from the plumbing for servicing or replacement — without cutting or disturbing the pipe.

Is this kit compatible with all Insnrg equipment?

Yes — this 50mm union assembly kit (152001) is the standard union used across the full Insnrg equipment range, including all Ci, Li, Di, Mi, Qi, Si, Zi, and UVi series products with 50mm threaded connections. If you are unsure whether this suits your specific model, contact us with your equipment model number to confirm.

What is the difference between part number 152001 and 15201001?

152001 is the current part number. 15201001 is the old/superseded part number for the same union assembly kit. Both refer to the identical product — if your documentation lists 15201001, this kit is the correct replacement.

When should I replace the union assembly?

Replace the union assembly (or individual components) when you notice water leaking at the union joint, a cracked or brittle lock nut or tail, a damaged or flattened O-ring, or a lock nut that no longer tightens securely. In many cases, replacing the O-ring alone will stop a minor leak — if the body or nut is cracked, replace the complete kit.