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Spade/Spacer (Ring) - Paddle blanks & Spacers

Spade/Spacer (Ring) - Paddle blanks & Spacers

Spades and Ring Spacers are basically the same as Spectacle Blinds, except that both are not attached to each other. Spades and Spacers be applied in systems where maintenance is often not necessary, or in applications with large pipe sizes. Depending on the flange size and the Pressure Class, Spades can weigh hundreds of pounds. To prevent unnecessary weight to a flange connections, usually will be chosen not for a Spectacle Blind, but for 2 separate parts.we are one of the reliable Spacer Blind Manufacturers In UAE.

Ring Spacer
So as for the Spectacle Blind already described, maintenance on a pipe system can be a reason to temporarily replace a Ring Spacer for a Spade. By loosening of all bolts, and half of the bolts temporarily, the Spade or Spacer can be placed. After replacing the gaskets (new gaskets are to recommended), the bolts can be re-assembled and tightened.

A small problem is that we basically cannot see, or a Spade or a Spacer mounted between the flanges. Therefore the handles are often specially marked, or both have a different design; a customer often provides its own specification.
What should never lack is, that in the handle, the diameter and the Pressure Class of a Spade or Spacer is engraved; this applies also for the Spectacle Blind.

Surfaces - Dimensions – Material
The sealing surfaces of a Spectacle Blind, Spade or Ring Spacer are usually conducted in accordance with the Face Finish from the flange. The diameter always is slightly larger than the Raised Face of a flange and with a correct assembly; the Blind or Spacer does just not touch the bolts.
The diameter of them, is depending on the flange size, and the thickness from the pressure class of a flange.
 dimensions from Spectacle Blinds, Spades and Ring Spacers.

ASME B16.48 covers pressure-temperature ratings, materials, dimensions, dimensional tolerances, marking, and testing for operating line blanks in sizes NPS 1/2 - NPS 24 for installation between ASME B16.5 flanges in the 150, 300, 600, 900, 1500, and 2500 Pressure Classes.
Spectacle Blinds, Spades and Ring Spacers should be made from a plate or forging specification, approved for use by ASME B31.3, of essentially the same chemical composition as the mating flanges and piping involved.

Dilinger Hutte, Germany
Corus, UK
Nippon Steel, Japan
Tata Steel, UK
Dan Steel, Denmark
Rukki, Finland
Columbus, South Africa
Aperam, Belgium
Outokumpu, Brazil

We are more than happy to assist you with your requirements so please contact us for any enquiries.

  • Dimensional accuracy
  • High strength
  • Durability
  • Corrosion resistant