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Bristan Sirrus 15mm TMV3 Thermostatic Blending Mixing Valve MT503CP Under Sink
Stock Code:
MT503CP
Bristan Sirrus 15mm TMV3 Thermostatic Blending Mixing Valve MT503CP Under Sink
Stock Code:
MT503CP
View All: Other Plumbing Equipment
View All Bristan Products
View All: Sale Items
£29.50
Excl. VAT
£24.58
Excl. VAT
In stock - FREE STANDARD DELIVERY to most UK postcodes - Next Day Delivery Available
Description
Specification
Warranty
Delivery
Returns
Finance Options
Reviews
The Sirrus range of 15mm and 22mm thermostatic blending valves are for primarily single outlet use. They are designed to supply safe, blended hot water for taps, showers, bidets or process control in hospitals, schools, leisure centres or industrial areas or anywhere that requires safe blended water.
Recommended for timed flow controls, non-thermostatic showers,
electronic controls and non-thermostatic taps
High pressure bath fill Part G compliant
Factory pre-set maximum temperature at 43oC
Automatic shut-off in the event of hot or cold water supply failure
Check valves, and serviceable filters and flat faced inlet connections
as standard
Operates at a maximum pressure differential of 10:1
Ideal in Education, Healthcare or Sports & Leisure environments
Recommended for timed flow controls, non-thermostatic showers,
electronic controls and non-thermostatic taps
High pressure bath fill Part G compliant
Factory pre-set maximum temperature at 43oC
Automatic shut-off in the event of hot or cold water supply failure
Check valves, and serviceable filters and flat faced inlet connections
as standard
Operates at a maximum pressure differential of 10:1
Ideal in Education, Healthcare or Sports & Leisure environments
Product Code: Product Code: MT503CP
Finishes: Chrome Finishes:
Product Type: Product Type: Commercial
Maximum Hot Temperature: 80oC Maximum Hot Temperature:
Supply: Supply: Suitable for all plumbing systems,
preferably balanced
Inlet Connection: Inlet Connection: Connection: 15mm
Outlet Connection: 15mm Outlet Connection:
Working Pressures: Min 0.1 Bar, Max 2.5 Bar
Finishes: Chrome Finishes:
Product Type: Product Type: Commercial
Maximum Hot Temperature: 80oC Maximum Hot Temperature:
Supply: Supply: Suitable for all plumbing systems,
preferably balanced
Inlet Connection: Inlet Connection: Connection: 15mm
Outlet Connection: 15mm Outlet Connection:
Working Pressures: Min 0.1 Bar, Max 2.5 Bar
EAN: 5038150018724
At Bristan, we want to make things as easy as possible for our customers. That's Bristan design products that are easy to fit and use, and that are quality tested to make sure they won't let you down.
It's also why we offer solid guarantees so that, in the unlikely event of something going wrong, you have the peace of mind that the problem will be sorted easily and quickly.
All of our Bristan products are covered by a guarantee, many of which include both parts and labour — so we'll send an engineer to fix the problem.
Please note that guarantees are only valid with proof of purchase and you can also register some of our showering products to take advantage of extended guarantee periods.
The full range of Bristan taps, showers and shower and bathroom accessories will now come with a Lifetime Guarantee*, covering all parts and finishes – and labour included for the first year under the Bristan repair, replace, or refund promise.
Bought your product before 1st April 2026? Please see the Bristan website for more details.
Other guarantees
Bristan Shower Pumps – 3 years parts, 1 year labour.
Bristan Commercial Taps and Showers – 1 year parts.
Bristan Contract Valua Range – 5 years parts, 1 year labour.
Bristan Kitchen Sinks – 25 years parts, 1 year labour (10 years parts for the Easyfit Kitchen Tap)
*Labour is provided by an approved Bristan Care service engineer or appointed representative. The guarantee only applies to products with a manufacturing fault. Call out for non-product faults or where no fault has been found with the product will incur a call-out charge.
What if my product is faulty?
If installed and used correctly, you will need to contact Bristan on 01827 254144 to arrange an engineer's visit. They will repair or replace the unit depending on what they find the fault to be.
If the item is not installed, the whole unit will need to be sent to the manufacturer for testing. If declared as faulty they will either repair or replace it, if it is not faulty the item will be returned to you. This can usually take up to 14 working days.
For further warranty information on Bristan products please check the Bristan Website.
Buyaparcel offer delivery throughout the United Kingdom, including Northern Ireland, Scottish Highlands and other Islands of the UK. We do not currently ship overseas.
UK Delivery Prices
Standard delivery is free with no minimum order charge to most mainland UK delivery addresses. Surcharges can apply to certain postcodes depending on the service type. For full details visit our Delivery Guide.
In additional to our standard service we also offer some premium delivery services if you need your item quickly
£0.00 - Standard UK Delivery (2-3 Days Approx)
£2.99 - Next Day UK Delivery (Orders placed before 3.00pm Monday - Friday)
*orders placed after 3.00pm Friday will still be delivered Monday if ordered before 11am Saturday Morning
£8.99 - Saturday Delivery (Orders placed before 3.00pm Friday)
£36.00 - Pallet Delivery (2-3 Days Approx - selected products only)
Alternatively if you view your parcel once items have been added and enter your postcode you will see what derlivery services are available.
Is My Item Available for Next Day Delivery?
If your item is stocked in our immediate picking location it will available for you to choose a next day delivery. This will be highlighted by a green tick and a 1 day dispatch time on the item information. 
You will have the option to choose this service if you are purchasing your item for delivery to mainland UK.
What courier will my item be delivered with?
If your item is being delivered in the UK or Ireland, it will be delivered by DHL eCopmmerce UK, Evri or Royal Mail, with the exception of pallet items.
Details of each courier service we offer are detailed in our Delivery Guide.
Is My Item Available for Click and Collect at your Lowestoft Store?
If your item is showing "In Stock" then you will be able to do a Same Day Click and Collect order from our Lowestoft Pinbush Road. Our cut off for same day collections is 3.00pm Mon-Fri / 11.00am Saturday. After that the product will be ready the next day for collection. After the cut off you are welcome to do a Call and Collect order by phoning our trade counter on 01502 507666. If your item is in stock you will still be able to do a same day collection and payment.
Our store is open Monday to Friday 8.00am - 5.00pm and Saturday 8.00am - 12.00pm so any orders placed the remainder of the weekend will be available for collection on Monday. Weekdays any orders placed up to midnight will be available for collection the following day. This excludes bank holidays.
Please wait for email confirmation your order is ready for collection from our store before you travel.
On collection we will require you to show a copy of your order confirmation, electronic or printed. In addition to this please bring photo ID which must be your passport or photo driving licence, matching the name on the PayPal/Amazon/Credit or Debit card used.
Collection option only available to NR and IP Postcodes
We've simplified our returns process! We now offer a no-questions-asked, free returns service within the first 30 days (subject to T&Cs).
You can find our returns information in our Terms and Help page
Spread the cost of your Buyaparcel purchase with Paypal Credit - Get 0% finance over 4 months! The perfect way to spread the cost of any purchases of £99 (inc vat) or more
Applying is that simple. If approved and you accept, you'll have a credit limit added to your PayPal account ready to use immediately. Plus, you'll automatically get 0% interest for 4 months on all your purchases of £99 or more.*
How to apply for Paypal Credit with Buyaparcel?
You have 2 ways to purchase from us with the option us using Paypal Credit.
1 - From the product page you can use Paypal Express Checkout which will take you straight to your Paypal account where you can login to complete payment or apply for Paypal Credit.
2 - If you add your product to your parcel and click "Proceed to Checkout" you will then go to our payment page. Select "Paypal Express Checkout" from the payment methods available and click "Place Order".
Once you are in your Paypal account choose PayPal Credit from the payment options.
If this is the first time you have used PayPal Credit, you will be asked to complete a short application form to apply for PayPal credit.
More Information on Paypal Credit
Write Your Own Review
Description
The Sirrus range of 15mm and 22mm thermostatic blending valves are for primarily single outlet use. They are designed to supply safe, blended hot water for taps, showers, bidets or process control in hospitals, schools, leisure centres or industrial areas or anywhere that requires safe blended water.
Recommended for timed flow controls, non-thermostatic showers,
electronic controls and non-thermostatic taps
High pressure bath fill Part G compliant
Factory pre-set maximum temperature at 43oC
Automatic shut-off in the event of hot or cold water supply failure
Check valves, and serviceable filters and flat faced inlet connections
as standard
Operates at a maximum pressure differential of 10:1
Ideal in Education, Healthcare or Sports & Leisure environments
Recommended for timed flow controls, non-thermostatic showers,
electronic controls and non-thermostatic taps
High pressure bath fill Part G compliant
Factory pre-set maximum temperature at 43oC
Automatic shut-off in the event of hot or cold water supply failure
Check valves, and serviceable filters and flat faced inlet connections
as standard
Operates at a maximum pressure differential of 10:1
Ideal in Education, Healthcare or Sports & Leisure environments
Specification
Product Code: Product Code: MT503CP
Finishes: Chrome Finishes:
Product Type: Product Type: Commercial
Maximum Hot Temperature: 80oC Maximum Hot Temperature:
Supply: Supply: Suitable for all plumbing systems,
preferably balanced
Inlet Connection: Inlet Connection: Connection: 15mm
Outlet Connection: 15mm Outlet Connection:
Working Pressures: Min 0.1 Bar, Max 2.5 Bar
Finishes: Chrome Finishes:
Product Type: Product Type: Commercial
Maximum Hot Temperature: 80oC Maximum Hot Temperature:
Supply: Supply: Suitable for all plumbing systems,
preferably balanced
Inlet Connection: Inlet Connection: Connection: 15mm
Outlet Connection: 15mm Outlet Connection:
Working Pressures: Min 0.1 Bar, Max 2.5 Bar
EAN: 5038150018724
Warranty
At Bristan, we want to make things as easy as possible for our customers. That's Bristan design products that are easy to fit and use, and that are quality tested to make sure they won't let you down.
It's also why we offer solid guarantees so that, in the unlikely event of something going wrong, you have the peace of mind that the problem will be sorted easily and quickly.
All of our Bristan products are covered by a guarantee, many of which include both parts and labour — so we'll send an engineer to fix the problem.
Please note that guarantees are only valid with proof of purchase and you can also register some of our showering products to take advantage of extended guarantee periods.
The full range of Bristan taps, showers and shower and bathroom accessories will now come with a Lifetime Guarantee*, covering all parts and finishes – and labour included for the first year under the Bristan repair, replace, or refund promise.
Bought your product before 1st April 2026? Please see the Bristan website for more details.
Other guarantees
Bristan Shower Pumps – 3 years parts, 1 year labour.
Bristan Commercial Taps and Showers – 1 year parts.
Bristan Contract Valua Range – 5 years parts, 1 year labour.
Bristan Kitchen Sinks – 25 years parts, 1 year labour (10 years parts for the Easyfit Kitchen Tap)
*Labour is provided by an approved Bristan Care service engineer or appointed representative. The guarantee only applies to products with a manufacturing fault. Call out for non-product faults or where no fault has been found with the product will incur a call-out charge.
What if my product is faulty?
If installed and used correctly, you will need to contact Bristan on 01827 254144 to arrange an engineer's visit. They will repair or replace the unit depending on what they find the fault to be.
If the item is not installed, the whole unit will need to be sent to the manufacturer for testing. If declared as faulty they will either repair or replace it, if it is not faulty the item will be returned to you. This can usually take up to 14 working days.
For further warranty information on Bristan products please check the Bristan Website.
Returns
We've simplified our returns process! We now offer a no-questions-asked, free returns service within the first 30 days (subject to T&Cs).
You can find our returns information in our Terms and Help page
Finance Options
Spread the cost of your Buyaparcel purchase with Paypal Credit - Get 0% finance over 4 months! The perfect way to spread the cost of any purchases of £99 (inc vat) or more
Applying is that simple. If approved and you accept, you'll have a credit limit added to your PayPal account ready to use immediately. Plus, you'll automatically get 0% interest for 4 months on all your purchases of £99 or more.*
How to apply for Paypal Credit with Buyaparcel?
You have 2 ways to purchase from us with the option us using Paypal Credit.
1 - From the product page you can use Paypal Express Checkout which will take you straight to your Paypal account where you can login to complete payment or apply for Paypal Credit.
2 - If you add your product to your parcel and click "Proceed to Checkout" you will then go to our payment page. Select "Paypal Express Checkout" from the payment methods available and click "Place Order".
Once you are in your Paypal account choose PayPal Credit from the payment options.
If this is the first time you have used PayPal Credit, you will be asked to complete a short application form to apply for PayPal credit.
More Information on Paypal Credit
Reviews
Write Your Own Review
