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Alpha G 1/2 Inch Valve 1.013387

Alpha

Alpha G 1/2 Inch Valve 1.013387

Alpha G 1/2 inch isolation valve, part 1.013387, for the Solarsmart 100 cylinder and CB50 and CD50 LPG boilers.

At a glance

  • Part type: isolation valve
  • Also known as G-12-VALVE-CB50, 1250069
Manufacturer part no.
1.013387
Showing prices

£22.63

£18.86 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Alpha G 1/2 inch valve (part number 1.013387) is an isolation valve listed by Alpha as an inlet fitting at the cylinder base. It is specified for the Alpha Solarsmart 100 cylinder and for the Alpha CB50 and CD50 LPG boilers. Its function is to isolate the inlet connection so the appliance can be serviced or drained safely.

Signs this part needs replacing

  • Visible weeping or drips from the valve body, spindle or gland nut.
  • The valve is stiff, seized or will not turn by hand.
  • The valve no longer isolates the inlet fully when closed.
  • Corrosion, scale or debris around the connection.
  • Moisture staining or mineral deposits beneath the valve.

Before you order

  • Confirm your appliance model against the fitment list above.
  • Check the existing valve is marked G 1/2 inch and matches the connection.
  • Verify part number 1.013387 against the manufacturer's parts list for your appliance.
  • Check whether the valve is fitted at the cylinder base or on the boiler inlet.

Not sure which part?

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