Grohe 42774000 Dual Flush Valve (Replaces 37801000)

SUMMARY

Grohe 42774000 Dual Flush Valve (Replaces 37801000)

The Grohe 42774000 is a dual flush discharge valve for pneumatic concealed toilet cistern systems. It is used to control the flush discharge from the cistern and is supplied as the replacement code for the earlier Grohe 37801000 valve.

This valve is for dual flush installations operated by pneumatic air-button control. It is intended for concealed cistern applications using the dual-hose pneumatic setup, with the later valve version using blue and transparent pneumatic air tubes in place of the older green and transparent hose arrangement.

Technical Details

- - Brand: Grohe

- - Part Number: 42774000

- - Replaces: 37801000

- - Part type: dual flush discharge valve / pneumatic waste valve / flush valve

- - Flush operation: dual flush

- - Actuation type: pneumatic

- - Cistern type: concealed toilet cistern

- - Connection style: bayonet push-in

- - Approximate overall height shown in Grohe technical drawing: 239mm

- - Approximate valve diameter shown in Grohe technical drawing: 90mm

Confirmed Models / Systems

- - Grohe 38691 Eau2 Old style dual flush dual air hose cistern system

- - Grohe 38690 000 dual flush cistern

Before Ordering

Check the existing cistern uses pneumatic dual-flush air-button operation and a dual-hose valve arrangement before ordering. If the existing installation uses the older green and transparent air tubes, this 42774000 valve is the later replacement for the previous 37801000 valve code. Confirm the valve style, hose arrangement and cistern code where accessible, as this part should not be selected by diameter alone.

Common Fault Symptoms

- - Symptom: toilet continues to run into the pan after flushing

- - Likely Cause: worn discharge valve seal or discharge valve not closing correctly

- - Solution: inspect the seal and flush valve assembly and replace the discharge valve where the valve body or operating mechanism is worn or damaged

- - Symptom: dual flush button does not operate the flush correctly

- - Likely Cause: pneumatic tube connection issue, damaged air tube or failing pneumatic discharge valve mechanism

- - Solution: check the air tubes are connected securely and inspect the flush valve and pneumatic tubing before replacement

FAST DELIVERY

• Delivery of this item is priced as a 'small packet'. UK delivery costs £5.95 incl. VAT.
• For all in-stock spare parts the typical UK delivery timescale is 2-5 working days.
• If you need a part urgently then we can provide a next-day (delivered Mon-Fri) UK delivery service for all in-stock small parcels ordered before 3.00pm, Monday - Friday.
• Next day delivery is available to select at an additional charge during the checkout.
• We delivery WORLDWIDE. For more information about international deliveries, read our delivery page.

RETURNS

• If you need to return a part then please telephone Di Vapor on 0121 705 0866 with the reasons for the return within 14 days of receiving the goods.
• For more information please see our terms and conditions.