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Saunders Diaphragm Valves

Saunders Industrial Valve

Glass Lined


Glass - Specialist blue borosilicate lining available in both weir and straight through designs.

* Cast Iron / Glass DN15-350 (½" to 14")

Plastic Lined


Available in the weir type design and with a number of lining options to suit corrosive line service.

* PFA DN15 - 100 (1/2" to 4")
* PP & ETFE DN20 - 150 (3/4" to 6")
* PTFE DN150 - 250 (6" to 10")

Rubber Lined


Available in both weir and straight through designs and with a number of lining options to suit both aggressive and abrasive line service.

* A Type DN20 - 500 (3/4" to 20")
* KB Type DN20 - 350 (3/4" to 14")

Saunders® - WFB


Specialist fire hydrant valve available for use with both saline and clean water.

* Bore sizes DN40 (1.1 /2") & DN65 (2.1/2")
* Straight and Angle Pattern
* Flanged, male & female end connections
* Maximum working pressure 15 bar (220psi)
* Gunmetal or SG iron body / bonnet
* Grade 286, diaphragm with fire resistant fabric reinforcement

Saunders® IDV Diaphragms


As the innovator and leader in diaphragm valves, we continually develop our diaphragm technology and remain the only manufacturer to have complete ownership of the research and development, design and production involved.

Saunders® offers a full range of diaphragm selections engineered to meet the exacting demands of our industrial customers. All grades of rubber and PTFE have been developed to suit individual customer requirements and are proven, even in the most arduous environments.

All Saunders® diaphragms are made from high quality materials and are manufactured in-house to strict quality standards. This is borne out by the fact that all diaphragms are fully traceable in accordance with EN10204 3.1. This gives our customers the assurance of consistent, reliable and repeatable quality resulting in consistent, reliable and repeatable process performance.

To assist in the selection of the best diaphragm materials please use the Saunders® material selection program or alternatively, please feel free to contact our customer service group, who will be happy to assist you with the best recommendation for your application

Saunders® XA Ultimate Series


Developed in-house using a compound based on an ethylene propylene (EP) technology, the Saunders® XA Ultimate Series industrial diaphragm offers increased erosion resistance in both corrosive and abrasive applications, including fertilizer, metals, chemical and mining.

Unlined / Alloy


Unlined / Alloy Print Overview Available in all designs with both screwed and flanged ends. Range of materials to suit the media.

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