Monarch supplies a range of engineered pipeline components used for flow restriction, positive isolation, and maintaining flange spacing in industrial pipework. Our restricted orifice (RO) plates are manufactured to suit your duty conditions, while single blinds and spectacle blinds provide a simple, highly visible method of isolating equipment for maintenance and safety compliance. Spacer rings are available to maintain correct face-to-face dimensions and gasket seating where inserts are removed or a fixed gap is required.
Select a product category below to view available options and specifications, or contact us to discuss custom sizes, pressure classes, materials and fabrication requirements.
Restricted orifice plates (RO plates) provide a simple, robust method of controlling flow and limiting downstream conditions by introducing a calibrated restriction in the line. Manufactured to suit your pipe size, pressure class and material requirements, RO plates are commonly used for fixed flow restriction, pressure let-down support, and equipment protection.
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Single blinds (paddle blinds) are a straightforward, economical way to achieve positive isolation in a pipeline. Installed between flanges, the blind can be inserted or removed during maintenance to provide a clear visual indication of line status (open or blinded).
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Spectacle blinds combine an open spacer and a solid blind in one “figure-8” plate, allowing operators to switch between flow and isolation without removing the assembly from the flange set. They are widely used in process plants where safe, repeatable isolation and clear visual confirmation are required.
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Spacer rings are used to maintain the correct flange face-to-face dimension where a blind, strainer or special insert has been removed or where a permanent gap is required. They help ensure proper gasket compression, alignment and bolting, and can be supplied to match your pipeline size, thickness, and material specification.
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