Company Details

  • Shijiazhuang Bang dong Pipeline Technology Co,Ltd.

  •  [Hebei,China]
  • Business Type:Manufacturer
  • Main Mark: Africa , Asia , East Europe , Europe , Middle East , North Europe , West Europe
  • Exporter:91% - 100%
  • Certs:CE, ISO9001
  • Description:Spacer & Spade Spectacle Blank,Stainless Steel Figure 8 Flange,Asme B16.5 Forged Steel Pipe Fitting
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Shijiazhuang Bang dong Pipeline Technology Co,Ltd.

Spacer & Spade Spectacle Blank,Stainless Steel Figure 8 Flange,Asme B16.5 Forged Steel Pipe Fitting

Home > Products > Steel Flange > Spectacle Blind Flange > carbon steel spacer spade Spectacle Blind Flange

carbon steel spacer spade Spectacle Blind Flange

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    Payment Type: L/C,T/T
    Incoterm: FOB,CFR,CIF
    Min. Order: 10 Piece/Pieces
    Delivery Time: 20 Days

Basic Info

Model No.: Spectacle Blind Flange

Standard: DIN, GB, JIS, ANSI, GOST, BSW

Type: Welding Flange

Material: Carbon Steel

Manufacturing Way: Forging

Structure: Round

Connection: Welding

Sealing Surface: FF

Additional Info

Packaging: Wooden Cases or as per buyer's requirements

Productivity: 1000pcs/month

Brand: Bangdong

Transportation: Ocean,Land,Air,Train/TNT/DHL

Place of Origin: Cangzhou,China

Supply Ability: 1000pcs/month

Certificate: ISO/CE/API

HS Code: 73079900

Port: Zhengzhou Train Station,Tianjin New Port,Beijing Air Port

Product Description


Spectacle Flange

Spectacle Flange consist of a connected ring (spacer) and a plate (spade).Spacer & Spade
Spectacle flange

We are manufacturer of Ansi Blind Flange and supply high quality Blind Flange in both large and small quantities worldwide and offer you the best prices in the market.

Spectacle blinds

Spectacle Blank are generally applied to permanently separating pipesystems, or just to connect with each other. A Spectacle Blind is a steel plate cut into two discs of a certain thickness.

The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange.


Figure 8 Flange be applied in systems, which regularly need to be separated from other installations. Normally, a Spectacle Blind is mounted in the "open" position so that flow through the pipe is possible. If the Spectacle Blind in the "close" position is rotated, the pipe is blanked off and no flow is possible.

Maintenance on a pipesystem can be a reason to rotate the spectacle in the "close" position. This run will take place through the hole, that is drilled in the connection piece. By loosening of all bolts, and partial removal of their, the Spectacle Blind can be rotated. After replacing the gaskets (new gaskets are to recommend), the bolts can be re-assembled and tightened.

SPECTACLE BLIND IN OPEN POSITION

SPECTACLE BLIND IN OPEN POSITION

SPECTACLE BLIND IN CLOSED POSITION

SPECTACLE BLIND IN CLOSED POSITION
Spades & Ring Spacers

SPADES

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.

Spade and Ring Spacer

RING SPACER

So as for the Spectacle Blind Flange already described, maintenance on a pipesystem can be a reason to temporarily replace a Ring Spacer for a Spade. By loosening of all bolts, and half of the bolts temporarily remove, the Spade or Spacer can be placed. After replacing the gaskets (new gaskets are to recommend), the bolts can be re-assembled and tightened.
A small problem is that we basically can not 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; by a correct assembly, the bolts are just not touched by the Blind or Spacer.
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, you will find in the main Menu "Flanges"

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.

If a piece of equipment needs to be inspected or removed from service then the plate covers the ring to form an airtight seal which consequently isolates a section of line or the piece of equipment. It provides a permanent or long term isolation device.
Specifications:
Our spectacle flange are designed to ensure that an item of equipment can be securely blanked off, with no possibility of leakage in the valve.
Because safety is so important to the function, we assure that they are tested rigorously to client`s specifications.
Our spectacle blinds, spades and spacers come in pressure ratings of 150lbs, 300lbs, 600lbs, 900lbs, 1500lbs and 2500lbs
Spectacle blinds, spades and spacers are available dimensionally in accordance with API 590 and ASTM 16.48 or any of our customer requirements.
They can be supplied in any grade such as

A spectacle flange is a specialty flange made of two metal discs attached in the middle by a small section of steel. Spectable flanges get their name because they look like a pair of reading glasses, or spectacles. Spectacle flanges, also known as spectacle blind flanges, are most commonly used on piping systems that need to be separated regularly or where the flow through the systems is regularly stopped. One end of the spectacle flange is solid, while the other end has a hole in the center. The spectacle flange can be rotated to place either the solid or hollow end within the pipe system, thereby opening or closing the flow.

Spectacle Flanges

Keywrods: Spectacle Blind Flanges, Spectacle Blind Flange, Spectacle Flanges, Spectacle Blind Flanges manufactory

Advantages of Spectacle Flanges
  • Spectacle flanges require no welding for installation
  • Spectacle flanges from bangdong Flange have a wide range of pressure tolerances
  • bangdong will manufacture spectacle flanges to your specifications

Spectacle Blind Flange


Looking for ideal Spacer & Spade Spectacle Blank Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Stainless Steel Figure 8 Flange are quality guaranteed. We are China Origin Factory of Asme B16.5 Forged Steel Pipe Fitting. If you have any question, please feel free to contact us.

Product Categories : Steel Flange > Spectacle Blind Flange

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