Pipe Blinds
There are three places in 29 cfr where line blinds are specifically noted as a safety device.
Pipe blinds. Blinds spaces and spectacle blinds are used for the purpose of positive shut off of a piping system where mere shut off using valves is not sufficient as valves are prone to leakage. Our spectacle blinds spades and spacers come in pressure ratings of 150lbs 300lbs 600lbs 900lbs 1500lbs and 2500lbs. 1 permit required confined spaces 1910 146 blanking or blinding means the absolute closure of a pipe line or duct by the fastening of a solid plate such as a spectacle blind or a skillet blind that completely covers the bore and that is capable of withstanding the maximum pressure of the.
Thick single blinds or rigid piping systems normally require ring spacers. When a raised face is necessary for blind pipe flanges the standard height is 1 16 for blind pipe flanges under 400. A hydroblind also often referred to as a spec blind or hydrotest blind is designed to handle the maximum pressure a pipe would be subjected to for testing purposes per asme specifications.
Choose from our selection of pipe blinds in a wide range of styles and sizes. In stock and ready to ship. These are generally used in hazardous services like hydrocarbon fluids.
They are designed to isolate sections of pipe to prevent contamination and allow inspection. Piping engineering piping fittings blinds spacers spectacle blinds single line blind or blank. Because safety is so important to the function we assure that they are tested rigorously to client s specifications.
The term paddle blind is generic term and does not imply thickness or purpose of the blind isolation or testing. We can also customize to your specs material needs color codes and sizes and are available 24 7 365 days of the year. Usa industries is the largest manufacturer and supplier of blind flanges isolation blinds and hydrotest paddle blinds for both rental and sale.
When removing a single blind either the flange and associated piping must be pulled together to seal the line or a ring spacer must be installed to fill the gap.
