This standard outlines the comprehensive criteria for vitreous china squatting pans utilized in sanitary plumbing systems. It addresses the various designs such as Long, Orissa, and Rural patterns, detailing their dimensions, construction, glazing, and performance validation to ensure high quality and operational effectiveness for manufacturers, engineers, and suppliers.
Overview
This standard outlines the comprehensive criteria for vitreous china squatting pans utilized in sanitary plumbing systems. It addresses the various designs such as Long, Orissa, and Rural patterns, detailing their dimensions, construction, glazing, and performance validation to ensure high quality and operational effectiveness for manufacturers, engineers, and suppliers.
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Frequently Asked
The standard specifies three primary patterns for vitreous china squatting pans: Long pattern with sizes 580 mm and 630 mm; Orissa pattern available in 580 × 440 mm and 630 × 450 mm sizes; and Rural pattern measuring 480 mm. These are detailed in the standard’s reference figures and ensure uniformity for manufacturing and installation.
For Long and Orissa patterns, the tolerances include ±10 mm for height and widths of the opening, ±10 mm for the footrest length (Orissa pattern only), and minimum specified values for opening lengths. The slope of the pan bottom is fixed at 15°, and the maximum distance from outlet center to flushing rim is 70 mm. Connecting dimensions such as inlet socket depth and diameters have specified minimums and tolerances. Ovality is permitted within these limits, and unspecified tolerances refer to the general standard IS 2556 Part 1.
The standard mandates several flushing tests: the Toilet Paper Test involves flushing 6 pieces of toilet paper four times, requiring at least three successful full discharges; the Splash Test uses colored water flushed five times to ensure that no more than ten isolated droplets splash beyond the rim; and the Sawdust Test verifies cleanliness after flushing fine dry sawdust. These tests confirm effective flushing, water seal integrity, and splash control.
Yes, the inner bottom surface of the pan must be uniformly smooth and glazed with an appropriate slope to facilitate effective flushing and hygiene. Conversely, the exterior bottom surface should remain unglazed but possess a roughened, scored, or grooved texture perpendicular to the outlet direction to provide non-slip properties. The standard prohibits glazing on exterior surfaces to ensure safety during use.
Traps must be provided as specified by the purchaser, with Long and Orissa patterns typically using a trap with a Por S outlet, optionally including an inspection vent. Rural patterns follow dimensions set out in IS 2556 Part 7. The trap interiors must be glazed for smooth flow and hygiene, and the assembly must pass all flushing tests. The flushing system requires a minimum cistern height of 1250 mm for high-level or 700 mm for low-level setups, connected via a 40 mm outer diameter flush pipe, ensuring proper integration and performance.
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