A leading ANSI ASME B16.48 Class 150 Spectacle Blind Flanges, Slip on Flanges – SORF, Weld neck Flanges – WNRF, Socket weld Flanges – SWRF, Blind Flanges – BLRF Lapped joint Flanges, Screwed Flanges, Long weld neck Flanges, Reducing Flanges, Spectacle Flanges, Ring joint Flanges manufacturer, stockholder & wholesaler in India (outside diameter) to the raised face gasket area. A Spectacle Blind is generally a piece of metal, typically carbon steel or stainless steel, that is machined to fit between two pipe flanges and usually set in between two gaskets. Normally, the spectacle blind is in the open position to allow fluid to pass through the pipe. Standard isolation thickness is 5/16" (+/- 1/16). This is not the preferred option because any damage to the gasket profile will make it unusable. A spectacle blind or spec blind, abbreviated as SB, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. A Spectacle Blind is generally a piece of metal, typically carbon steel or stainless steel, that is machined to fit between two pipe flanges and usually set in between two gaskets. Spectacle Flange Spectacle Flange consist of a connected ring (spacer) and a plate (spade).

For Blinds over 24" please select MSS SP44 Series "A" or API-605 Series "B"For Blinds over 24" please select MSS SP44 Series "A" or API-605 Series "B"For Blinds over 24" please select MSS SP44 Series "A" or API-605 Series "B"For Blinds over 24" please select MSS SP44 Series "A" or API-605 Series "B"Line sizes up to 96" are available. Of course, just let us know what thickness you want.

Blinds are mounted onto one of the bolts so that when you need to isolate a section of pipe, it's easy! The difference is that spectacle blinds may need some space to be rotated, and this space is not always available due to the routing of the piping system. For spades and ring spacers, holes on the hangers inform the staff.Carbon steel spectacle blinds are manufactured out of a single piece of steel, whereas alloy / stainless steel blinds can be manufactured by welding more pieces together (generally up to three).This norm covers the dimensions, marking, pressure-temperature ratings, materials, dimensional tolerances and testing for line blanks in sizes between NPS 1/2 and NPS 24 for installation between ASME B16.5 flanges in the A flange spade, otherwise called steel “blanking spade”, or “single-blind”, “blank” or “paddle blind”, is a metallic ring used to isolate a pipe (it has the same scope as a spectacle blind). Additionally, RTJ (RJ) gasket surfaces can be provided in oval or octagonal form. For a male RTJ blind, the gasket profile is machined onto the blind. This is one of the perks of dealing directly with the manufacturer! This simple manuever closes the pipe and prevents flow, while simultaneously visually identifying that the pipe is closed. One of our experienced staff members will respond to you shortly.For immediate assistance, please call us at (713) 941-3797 or Toll Free at (800) 456-8721.

Any thickness, rating or alloy is available upon request.Sizes and thicknesses meet the following specifications:Blank thicknesses over 24 NPS were calculated using the equation for blanks in ASME B31.3 as follows:S (Basic Allowable Stress) and E (Quality Factor) values were determined from tables A1 and A1-A from B31.3 for 516-Gr 70 material with the temperature range of -20 to 100 degrees Fahrenheit.

We need to know if want an RTJ (RJ) male or RTJ (RJ) female spectacle blind. For a female RTJ blind, the area for the gasket seating profile is machined into the blind. It is different than a valve in that the blind is a permanent or long term isolation device. Spectacle Blind Type 3. © 2003 - 2020 USA Industries, Inc.® | All Rights Reserved Prevents issues during maintenance due to pipe spreading516 - Gr70 Carbon Steel or any alloy & coating availableSizes and thicknesses meet ASME 16.48, ASME 16.5, ASME B16.47 specifications315 State Street | South Houston, TX, USA 77587 | Ring spacers or Open Blinds are used to fill the space of Single Blinds when they are removed … Yes, this is frequently referred to as a blind/spacer set and is more commonly made in this configuration on larger sizes. Search the world’s most viewed knowledge base for project materialsSpectacle blinds, spades, and ring spacers are installed between flanges to sections of a pipeline permanently or temporarily as shown in this Youtube video:Spectacle blinds are available in standard sizes up to 24 inches and in Where to buy spectacle blinds? Generally, flange factories are also spectacle blind manufacturers.The reference specification for pipeline isolation devices (including spectacle blind, ring spacers, and line blanks) is Spectacle blinds (also defined “spectacle flanges”) are manufactured from steel plates and are basically two interconnected discs: one is actually a ring (i.e. When the spectacle blind is in the closed position, the pipeline is closed and the fluid is blocked. This calculation does not take into consideration any required corrosion allowance if needed.Easily swap between closing off and opening a section of the pipe for maintenance.We maintain more than 1 million pounds of blinds in stock and are ready to ship 24/7!The EZ Lock Blind Rack is the ideal solution for storing your paddle & hydrotest blinds.The EZ Vent Blind allows users to block flow on one side of the pipe flange while allowing an outlet to safely vent off gas or pressure on the other side.The EZ Purge Slip blinds create a safe purging area and prevent unneccesary damage related to outdated purging practices.USA Industries is one of the largest manufacturers of Paddle Blinds in both Isolation and Hydrotest thicknesses.We offer immediate delivery for in-stock blind flanges, and we stock a large variety of standard sizes in carbon steel and stainless steel.Thank you for submitting a quote request with USA Industries.