ORI Srl sistributes in the Italian territory double block and bleed twin seal valves.
Double block and bleed twin seal valves are an optimal solution for the perfect fluid segregation, being capable of a bubble tight shut off for years of continous service, assuring that no product is lost and that there is no contamination between different products.

Twin seal valves are mainly used in the field of petrochemical industry, in the fiscal lines of fuel storage areas in refineries and plants.
Rapid seal abrasion is inherent in the designs of most ball and gate valves. ORI twin Seal valves stop this constant wear by using two seating slips mounted independently on a tapered plug by dovetails.
The age-old double block and bleed system required the use of two valves and a spool piece. A bleed valve was used to drain the spool and verify seal integrity. The double Seal replaces this antiquated two-valve system with just one double-seated bubble-tight valve. The upstream and downstream seal provide the same function as the two block valves. The body (serving as a spool piece) bleed verifies seal integrity.

ORI twin seal product range includes:

  • Double block and bleed twin seal valves
  • Four- way valves
The Twin Seal valves are available in pressure class from ANSI 150# to ANSI 2500# and with diameters until 24″, directed manual drive, with turns reducer ,motorized by actuators , supplied with mechanical extensions.
Designed to conform to API6D, inspected and tested in accordance with API 598/599.
Certified Fire Tested in accordance with API 6FA, BS6755 Part 2 and API 607 Edition 4.
The soft seal material can be chosen between various different elastomer, from Viton, to Buna-N, to reinforced Teflon, to special material  for 100% MTBE concentration, in order to guarantee perfect compatibility with the process fluid.
  • ISO 9001 License
  • ATEX
  • CE/PED Directive 97/23/CE

Twin Seal valves are suitable for use on oil lines subject to the Italian  U.T.I.F. norms as per UTCIF 1984-dog 534/IF 134/51, prot.  N. 3547 of the 06/12/1984.