Disc Bottom Outlet Valve
Disc Bottom Outlet Valve – General Overview
The disc lowering valve models 18 (different size inlet /outlet) and 24 (bigger size inlet than outlet) can be used on vessels with low mounted agitators, as it is non intrusive. Disc lowering valves can also be combined with sampling valves.
Valve Bodies
The valve bodies for all models would usually be in various stainless steel grades, but can also be provided in any available castable or weldable material.
Disc Bottom Outlet Valve – Sealing Arrangements
Disc valves are available with a number of different sealing options:
- Model 25BS is typically a Hastelloy or stainless steel valve with a stuffing box seal to the outside.
- Model 25BH is usually a metal or stainless steel valve with a Hastelloy or metal bellows and a back up stuffing box seal.
- Model 25 BF is a Teflon or glass lined valve with bellows and back up stuffing box seal.
- Model 25 BM features a Teflon or rubber diaphragm seal.
All disc valves can be provided with a “TA Luft” (exacting German environmental emissions standard) compatible stuffing box seal.
Sealing to process options include metal to metal, hard faced material options and PTFE sealing ring.
For the pharmaceutical industry for example, stainless steel grades such as 1.4435 (BN2) and easily polished 316L, 1.4439 or 1.4539 are used. For higher corrosion resistance we can provide Duplex, Alloy 59, Hastelloy C22, C276, B2, B3, Titanium, Zirconium and many others.
Alternatively, cast steel or stainless steel valves can be delivered with isostatically sintered PTFE or glass lined bodies.
Features of Disc Bottom Outlet Valves
Core features of Disc Bottom Outlet Valves include a robust design and construction, high adaptability, and no dead space. Each SchuF Bottom Outlet Valve is adapted to fit the requirements of the proposed application, whether it be a non standard size connection, highly abrasive material, or low contamination requirements.
