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FloPlast Waste Pipe Boss Adaptor Review: Fits 43mm solvent-weld installations

FLOPLAST Waste Pipe Boss Adaptor - Solvent 40mm (43mm)
4.6
[43mm Solvent-Weld Compatible]  Fits 43mm (1½") solvent-weld pipe and fittings for direct installation.
[Not for 40mm Pipes]  Not compatible with 40mm or PP-marked pipes — use 40mm pushfit/compression fittings.
[Pack of One]  Supplied as a single adapter — ideal for individual repairs or installations.
[Fits 110mm Strap Boss]  Designed to install into a 110mm strap boss for secure soil pipe connection.
[Permanent Solvent-Weld Bond]  Secures with solvent-weld cement for a permanent, strong installation.
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A plumbing fitting for soil pipe installations, designed to allow solvent-weld connections with 43mm pipe and fittings. Tradespeople gain confidence from a permanent joint that reduces the chance of repeat repairs. Is the FloPlast Waste Pipe Boss Adaptor the right choice when working with 43mm solvent-weld systems?

⚡ At a Glance
  • Connection Type: Solvent-weld socket made for 43mm (1 1/2 inch) solvent-weld pipe or fittings
  • Best for: Plumbers and DIYers adapting 43mm solvent-weld pipe into a 110mm strap boss
  • Not ideal for: Systems using 40mm pipe or pipe marked with PP, which require push-fit or compression fittings

Made to accept 43mm solvent-weld pipe and fittings, the boss adaptor works with a 110mm strap boss. Solvent-weld cement secures the joint for a permanent, strong installation.


Permanent, leak-resistant joints – With solvent-weld socket for 43mm pipe

Solvent-weld cement chemically fuses pipe and socket faces, creating a continuous joint that cures into a rigid bond. The socket is sized specifically for 43mm (1 1/2 inch) solvent-weld systems.

Fused joints reduce the risk of leaks and cut down on maintenance, making long-term installations more reliable.

Simple boss integration – With design for use with a 110mm strap boss

Adaptor geometry allows a solvent-weld pipe to be inserted into a 110mm strap boss, converting the boss to accept a solvent-weld connection. The listing specifies compatibility with a 110mm strap boss arrangement.

Retrofitting or replacing connections in existing boss fittings becomes straightforward, avoiding complicated rework.

Clear compatibility guidance – With explicit 43mm requirement

Product notes state the adaptor is for 43mm solvent-weld pipe and is not compatible with 40mm pipe or pipe marked PP, which need alternative fittings. The item is supplied as a single unit.

Knowing exactly what will and will not fit prevents wasted purchases and speeds up job planning.

✨ The 4 Key Reasons for FloPlast Waste Pipe Boss Adaptor
  1. Solvent-weld socket, permanent bonded joints reduce future leak repairs
  2. 110mm strap boss compatibility, allows straightforward retrofit of solvent-weld pipe
  3. Clear incompatibility notes, avoids selecting wrong 40mm PP fittings
  4. Single-unit pack, ideal for one-off repairs or specific replacement jobs
📋 Technical Details at a Glance
  • Category: Lawn & Patio
  • Brand: FloPlast
  • Product type: Waste Pipe Boss Adaptor
  • Compatible pipe size: 43mm solvent-weld (1 1/2 inch solvent weld)
  • Not compatible with: 40mm pipe or pipe marked PP
❓ Frequently Asked Questions

Q: Will this fit 40mm pipe?

A: No, the adaptor is not compatible with pipes that measure 40mm or have PP printed on them; those require 40mm push-fit or compression fittings.

Q: Can this be used with a 110mm strap boss?

A: Yes, the adaptor is designed for use with a 110mm strap boss to allow a solvent-weld pipe to be installed in the boss.

Q: How is the adaptor secured in place?

A: Solvent-weld cement secures the adaptor for a permanent and strong installation.

🏆 Our Verdict

Suitable for plumbers and competent DIYers working with 43mm solvent-weld soil pipe and existing 110mm strap bosses. The permanent solvent-weld joint and clear compatibility notes make installations reliable and reduce the likelihood of repeat work. While upfront cost varies by supplier, the durable joint and straightforward fit make for good long-term value.