15X First Stage

Product No: 416237


The 15X first stage is suitable for any use. It has pre-oriented ports and an ACT valve for reliability and safety. It is equipped with a DFC system for great performance at any depth.

Product Information


The 15X balanced diaphragm first stage has a DFC port and pre-oriented ports making it perfect for the octopus configuration as well. Very compact with a sandblasted finish.
The DIN300 balanced diaphragm first stage weighs 598g. The INT version weighs 772 g.


Balance Diaphragm
First stage weight INT:
772 g / 27.2 oz
First stage weight DIN:
598 g / 21.1 oz
First stage weight NX:
High pressure ports:
2 HP 7/16” UNF ports
Low pressure ports:
4 LP 3/8” UNF ports

Delivery & Returns


Online purchases on mares.com are enabled for Italy, France, Spain, Germany, Austria, Netherlands, Luxemburg, Belgium and Finland. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers. Products shipped in other countries are entrusted to DHL couriers.

Delivery times are 3-5 working days.



If you are not satisfied with your order, you can return it quickly and easily.

You can decide to return any products purchased on mares.com within 30 days of delivery. To return items, use the same box they were received in, complete the returns label found here with shipping details and attach it to the box. Remember to insert the delivery number found on page 1 of the delivery documents.


To allow you greater freedom, we have not chosen a courier service with which you need to return the package, you are free to choose your preferred service provider.

Please remember that shipping costs are your responsibility.


You will receive the total refund on the same payment method you used to place your order, within 14 days after your return has reached our warehouse. 


At the moment, we cannot offer exchanges on our products. If you would like a different size, please return the article for a refund and purchase a new size. If you still have any doubts, you can write us an email at shop@mares.com, our Customer Service team will be happy to help.