Orifice plates from TPMC provide simple and reliable pressure reduction in fire protection systems. Also known as pressure reducing orifice plates, these precision-drilled steel plates create localized resistance to reduce downstream pressure while maintaining required flow rates.
Commonly installed in breeching inlets, landing valves, standpipe risers, and pump discharge lines, they prevent over‑pressurization, protect equipment, and ensure safe operating pressures at lower floors and outlets. Manufactured from high-quality steel with various orifice diameters and flange sizes, TPMC orifice plates deliver stable performance, simplified installation, and full compliance with BS/EN and NFPA system requirements.
Available size
| Piping size | Orifice (mm) | Thickness (mm) | Working pressure (bar) | Ref. No. |
|---|---|---|---|---|
| DN 50 (2″) | 12.5 ~ 40 | 3 | 16 | FE7501 |
| DN 65 (2.5″) | 12.5 ~ 50 | 3 | 16 | FE7502 |
| DN 80 (3″) | 12.5 ~ 60 | 3 | 16 | FE7503 |
| DN 100 (4″) | 12.5 ~ 80 | 6 | 16 | FE7504 |
| DN 125 (5″) | 12.5 ~ 100 | 6 | 16 | FE7505 |
| DN 150 (6″) | 15 ~ 120 | 6 | 16 | FE7506 |
| DN 200 (8″) | 20 ~ 160 | 9 | 16 | FE7507 |
| DN 250 (10″) | 25 ~ 200 | 9 | 16 | FE7508 |
Note: Orifice size and thickness can be customized.
Email us at info@tpmcsteel.com or use the form below. Normally you will be replied within 2 hours during support hours.
