5 Shuttleworth Close
Gapton Hall Industrial Estate
Great Yarmouth
NR31 0NQ
United Kingdom

Tel: 44 (0) 1493 602211

Fax: 44 (0) 1493 602221
Email: sales@jenex.co.uk

Specialist in the Provision of Valves,
Pumps, Liquid Level Control and
Tank Gauging Equipment

Est. 1996


DEMCO Butterfly Valves

Acclaimed as the most durable of all resilient-seated butterfly valves in the industry, this valve excels in a wide variety of applications.
Cast in both wafer and tapped-lug patterns in a wide variety of material choices, Demco butterfly valves feature a one-piece body for minimum weight and maximum strength. The unique stem hole design in the disc ensures a dry stem journal, and the hard-backed seat (2" - 36") allows ease of installation, reliable operation, and is field-replaceable without special tools. Demco butterfly valves are available in sizes 2" thru 36".Engineered for long-term, maintenance- free performance, Demco butterfly valves are commonly selected for a variety of applications spanning a wide range of industries:
  • Chemical and petrochemical
  • Agriculture
  • Oil and gas drilling and production
  • Food and beverage
  • Water and waste water
  • Cooling towers (HVAC)
  • Power
  • Mining and materials
  • Dry bulk handling
  • Marine and government

DEMCO Butterfly Valves Brochure

DEMCO Series DM 7500 PSI

Meeting the tough, 7,500 psi working pressure demands of deep well drilling is the Demco DM 7500 gate valve. The DM 7500 comes to this market with proven technology from the industry leader.When the market demanded a 7,500 psi drilling mud valve, the Demco DM 7500 gate valve was introduced to meet the challenge. This is fitting since Demco DM API gate valves (2,000 to 5,000 psi) continue to be the premium drilling mud valves of choice, as they have been for more than 30 years.

The Demco DM 7500 is available in sizes 2" to 6" with butt weld end or flanged end connections. Engineered specifically for the high pressure requirements of deep well drilling, the Demco DM 7500 gate valve is chosen for the following drilling applications:

  • Standpipe manifolds
  • Pump manifold block valves
  • High pressure drilling system block valves
  • High pressure frac service

DEMCO Series DM 7500 PSI Brochure


DEMCO® Aluminum Bronze and Stainless Steel Products are designed especially for the demanding requirements of corrosive CO2 injection and waterflood applications in the enhanced oil recovery market. Demco Series DT gate valves are available in sizes 1" to 4". Demco Series DB gate valves are available for 6" and 8" size applications.

DEMCO DT/DB Gate Valves Brochure