Contact Us

Valve Cones

William Johnston & Company Limited have been involved with the manufacture and supply of WRC/WRAS approved EPDM valve cones for several years. Valve cones are an approved method of sealing potable water valves where a conventional braided stuffing box packing has been previously used.

Easy and quick to install the range offered will suit all sizes of valve listed in the table below. The company is ISO approved for quality within manufacture and maintains ongoing quality checks to maintain its reputation as one of the leaders in the gasket and sealing industry. These cost effective seals are quicker to install and last longer than a conventional packing.

Valve cone selection

Valve stem diameter Shaft/stuffing box diameter
25mm 1” 43mm 1 ¾” No 6
28mm 1 1/16” 50mm 2” No 8
31mm 1 ¼” 55mm 2 3/16” No 10
34mm 1 3/8” 60mm 2 3/8” No 12
38mm 1 ½” 63mm 2 ½” No 14
40mm 1 9/16” 65mm 2 9/16” No 16
44mm 1 ¾” 69mm 2 5/8” No 18

The valve stem diameter should be identical to the measurement given. The shaft or stuffing box diameter should be equal to or less than the measurement indicated above.

Contact William Johnston & Company Limited for further information on this and other products that can assist in reducing installation time and expense.

Return to Products >

Contact William Johnston & Company Limited

For more information about our Valve Cones products that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.

Failure to select the correct materials or products can result in damage to plant and equipment and personal injury. In specific applications, particularly where critical conditions exist, we suggest you contact us and we will consider with you the most suitable material or product. However, information supplied by William Johnston & Company Limited is intended only as technical co-operation and as a guide to the various uses of different products. No warranty is given in respect of information or recommendations by William Johnston & Company Limited which are only given for guidance and without any guarantee. The customer must satisfy themselves on the suitability of the material or product for the intended purpose. The correct fitting of products is the responsibility of the customer.

William Johnston Accreditation