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San Marco Boise Tap Valve



San Marco Boise Tap Valve   for the Cold Water side or Hot Water side of your Kitchen Tap. There is no brass bush with this Valve.  The grub screw is located underneath the handle – requires a 2mm allen key.

Earlier Valve was 1212R and later Valve is 3547R.  To avoid ordering the wrong part please read below before ordering.

If your Tap is dripping from the Spout then you might need to change your Valves.  Here is our Guide 7 Easy Steps to replace Kitchen Tap Valve.
If your Tap is dripping where the Spout meets the Base you might need to replace your  O Ring Kit.





San Marco Boise Tap Valve.

The valves have been changed in this Tap so we strongly recommend that you remove your own handle and check which valve is in your own tap.  Here is our Guide How to remove the handle on your Kitchen Tap.

Earlier Version = 1212R is a 20 Spline Valve, two threads, c.50mm tall.

If you order the 1212R, you will receive the original version with the white seal.

1212R Valve (Cold Valve shown here) - 20 Splines

1212R Valve (Cold Valve shown here) – 20 Splines

Example of 1212R in a Tap

Example of 1212R in a Tap


Later Version = 3547R, 28 Splines, one thread, c. 53mm tall.

SMR 3547R H

SMR 3547R Valve , Hot shown here.

Example of 3547R Valve in Tap, no Bush

Example of 3547R Valve in Tap, no Bush


Please note that whether you have the earlier two threaded 1427r (AKA 2307R, 2552R or 4276R) valve or the later one threaded 3547r, the manufacturer of your Tap has recommended that the 1427R two threaded valve be used as a replacement valve [this is due to a modification of the 3547R current valve]. The 1427R valve comes with a white seal underneath . This picture here shows you the difference between the 3547r and the 1427r(4276r). They may look different, but they are the same in the measurements that matter, and this is the valve recommended anyhow by the manufacturer of your Tap

SMR 3547R 4276R

SMR 3547R 4276R

San Marco Boise Tap Valve

San Marco Boise Tap Valve


This is a Genuine Spare Part.

Parts might be modified by the manufacturers as part of their continual improvements. We cannot always guarantee that a part will fit an older version of a product. All spare parts that do not fit can be returned for a refund excluding shipping costs.

We ship from IRELAND so please see below for SHIPPING TIMES (by Post or Courier) before you place your Order to avoid any misunderstandings regarding estimated arrival date for your order once dispatched.

POST COST: For very small items: Screws, O Ring Kits, Aerators & some Bushes, we Post (£2/£3.50). This is NOT trackable.     Where we Post, and you have been incorrectly charged Courier Rate £5/£7, we will refund the excess shipping charge to you. Some Parts cannot be posted e.g. Valves.


ROI / NI: Approx 2 days delivery by Post.

Great Britain: Unfortunately there is no such thing as first / second class mail in Ireland. There is just 'standard' post. Our current experience is that it is taking approx 1-2 weeks for goods to arrive in Great Britain by Post. But we are having reports of it taking even longer than this. This is outside of our control and the backlog appears to be due to customs clearance for all items creating a backlog, slowing down all inward parcels and post from EU.

COURIER DELIVERY TIMES Track & Trace (£5/£7) & we make no profit from these charges):

ROI / NI: Approx 2 days delivery by Fastways.

Great Britain: Average shipping time with DPD is approx 1 week (but can take longer) .

Please note that delivery times with DPD UK for goods shipped from Ireland are slower than DPD within Great Britain. Brexit means that all goods coming into Great Britain have to clear Customs and this has added delays to the process. Our current experience is that goods shipped with DPD UK currently take approx 1 week to be delivered, but it can occasionally take longer. We can provide tracking numbers if required. Click here for more detailed information about all Shipping & Returns.

Not shipping to UK Offshore Islands:

We are currently only shipping to England, Scotland, Wales, NI and ROI. We are currently unable for logistical & customs reasons to ship to Channel Islands, Isle of Man or any Isles off mainland GB. All we can suggest is that you might be able to have the Order shipped to GB and from the there get it shipped on to your own address if it is one of the destinations that we currently do not ship to.

BREXIT: Brexit will have no financial impact on our GB customers once your Order is less than £135.

There will be No Vat on Imports, No Customs Charges, No extra or hidden charges once your Total Order is less than £135.  We will remind you again about this at the Checkout stage before you complete (pay) for your Order.  For further details please see our Brexit section here.


Troubleshooting Guide

Troubleshooting Guide


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