Gate Valves for Pharmaceutical

No. Gate valves are not used for pharmaceutical product contact service. Gate valves have a wedge disc that creates a recessed cavity in the body bottom when open — this pocket is a 'dead leg' where product (active pharmaceutical ingredients, intermediate compounds, solvents, or bioprocess media) can accumulate, degrade, or harbour microbial growth between batches. GMP (Good Manufacturing Practice) principles, EU GMP Annex 1 (sterile manufacture), US FDA 21 CFR Part 211, and ASME BPE all prohibit dead legs in product-contact pharmaceutical process piping. Instead, product-contact pharmaceutical valves are: diaphragm valves (ASME BPE, no dead leg — liner deflects flush with pipe bore); ball valves (zero dead-leg T- or L-pattern, ASME BPE); butterfly valves (ASME BPE wafer type for drain isolation). Gate valves serve only in non-product-contact utility systems in pharmaceutical plants: pure steam headers, chilled water, compressed air, firewater, and cooling water — where GMP cleanability requirements don't apply.

IBR stands for Indian Boiler Regulations, 1950 — the Indian law governing the safe use of boilers and pressure vessels. Under IBR, any vessel, piping, or fitting that carries steam at pressure above 3.5 kgf/cm² (approximately 3.43 bar gauge) and temperature above 100°C (saturated or superheated) must be manufactured, tested, and certified per IBR requirements. In pharmaceutical plants in India, IBR applies to: (1) Pure steam generators (PSG) — typically 4–8 bar pure steam; (2) Pure steam distribution headers and mains — gate valves on these headers require IBR Form 3C test certificate; (3) Plant steam (utility steam) boilers above 3.5 bar — all steam piping from boiler to the point of use; (4) Autoclaves and sterilisers above 3.5 bar — the steam supply isolation valves. IBR-certified gate valves are supplied with: IBR Form 3C test certificate signed by an IBR-approved inspecting officer; material test certificate (EN 10204 3.1 or equivalent) with chemistry and mechanical properties; pressure test (shell and seat) witnessed by IBR inspector; manufacturer's IBR registration number stamped on body.