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Caleffi 309440 CST 4 Bar 1/2" x 15mm Temperature & Pressure Relief Valve

Advanced Water

Caleffi 309440 CST 4 Bar 1/2" x 15mm Temperature & Pressure Relief Valve

Caleffi 309440 CST temperature and pressure relief valve rated at 4 bar with 1/2" and 15mm connections.

At a glance

  • Also known as 2081207
Manufacturer part no.
061-475-0701
Showing prices

£84.96

£70.80 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Caleffi 309440 CST is a temperature and pressure relief valve rated at 4 bar, with 1/2" and 15mm connections. It is a safety component that opens and discharges when its set pressure is reached, relieving excess pressure from the system it is fitted to.

Before you order

  • Confirm the pressure relief setting required by the system matches the 4 bar rating of this valve.
  • Check the connection sizes, 1/2" and 15mm, against the existing valve or the pipework it will connect to.
  • Cross-check the part number 309440 (CST) against the valve being replaced.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.