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Caleffi 309570CST 7 Bar 3/4" x 22mm Temperature & Pressure Relief Valve

Advanced Water

Caleffi 309570CST 7 Bar 3/4" x 22mm Temperature & Pressure Relief Valve

Caleffi 309570CST temperature and pressure relief valve rated at 7 bar, with 3/4" and 22mm connections for cylinder installations.

At a glance

  • Also known as 2081241
Manufacturer part no.
014-475-0903
Showing prices

£115.20

£96.00 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 309570CST is a temperature and pressure relief valve rated at 7 bar, with 3/4" and 22mm connections. It is a safety device for stored hot water, discharging water if the temperature or pressure inside the vessel exceeds the set limits. It is listed in the cylinder spares range under the PRVs and PTRVs category.

Before you order

  • Confirm the 7 bar rating matches the cylinder design pressure and the marking on the valve being replaced.
  • Check both connection sizes, 3/4" and 22mm, against the cylinder tapping and the discharge pipework.
  • Cross-check the part number 309570CST against the valve already fitted.
  • Confirm that a combined temperature and pressure relief valve is required for the installation rather than a pressure-only relief valve.

Not sure which part?

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