The IMI PBM AF Series 3 fire-rated angle stem tank bottom valve provides efficient drainage and actuator clearance in jacketed or insulated vessels. API-607 fire-rated, it ensures leak-tight shutoff with Adjust-O-Seal® technology for in-line seat adjustments. Its pad radius design enhances drainage efficiency while minimising pocket areas above the ball. Built from 316L stainless steel, Hastelloy®, and ASME B16.34 materials, it supports hygienic clamp, FNPT, and flanged connections. Designed for full vacuum operation, the AF Series 3 is ideal for biotech, pharmaceutical, and industrial tank bottom applications.

Key features

Sizes 1” to 6” depending on series

316L, (ASTM A351 CF3M) Hastelloy and other ASME B16.34 listed materials

API-607 Fire Test Qualified

Pad radius design

Bubble-tight sealing

Direct mount actuation

Vacuum-rated