Working of the Pneumatic PTFE lined flush bottom valve is automated with the actuators with pneumatic cylinders or diaphragm actuators for a linear actuation of lined flush bottom valves. As a standard industry practice, for open into the tank, i.e. disc rising type flush bottom valves, diaphragm type actuators are preferred, while for open into valves, i.e. disc lowering type flush bottom valves, cylinder type actuators are preferred as higher stroke length is required for these types of valves. With these actuators, Pneumatic PTFE lined flush bottom valve is automated thus allowing the liquid & slurry to be drained off remotely and with minimum labor from tanks, vessels, and reactors. Pneumatic PTFE lined flush bottom valve pneumatic actuators with single-acting (fail-safe) design and double-acting (stay-put) design of reputed brands.
 

Pneumatic PTFE lined flush bottom valve Specification:

Pneumatic PTFE lined flush bottom valve Feature:
1. Pneumatic PTFE lined flush bottom valve suitable for corrosive as well as food-grade application.
2. The unique design of Pneumatic PTFE lined flush bottom valve ensures “Zero- Hold Up” in the bottom pad of the tank. And facilitate the free flow and quick discharge of the liquid or slurry through the valves.
3. Automate liquid drain operation from the lined flush bottom valve and minimize the labor.
4. For the precise process control parameters, Pneumatic PTFE lined flush bottom valve is optionally offered with Automation accessories such as Solenoid Valves, Limit switches, Positioner, Air Filter Regulators.
5. Pneumatic PTFE lined flush bottom valve available up to 5mm thick. It is tested up to 10 KVA for lining integrity.
6. Pneumatic PTFE lined flush bottom valve is available in both designs: Disc Opening into the tank (vessel opening design)and Disc Lowering (inside valve opening design) into the valve.
7. PTFE lined valves available in the range of 15 NB to 150 NB and in BS, ANSI, DIN standards.
8. Pneumatic PTFE lined flush bottom valve outlet discharge angle available in 45°and valves can also be tailored made to 60° of discharge angle.
9. Bolted Stuffing Box (Gland), easily adjustable & with Repackable service. Rinsing & Non Rinsing stem with outside ACME thread.
10. Manual override provided for safety and emergency operations of flush bottom valve.
11. Pneumatic PTFE lined flush bottom valve is offered in Investment Casting as well as fabricated construction. Valves available in all metallurgy, like, Carbon Steel (CS ASTM A 216 WCB / WCC), S.S 304 (ASTM A 351 Gr CF8), S.S 316 (ASTM A 351 Gr CF8M) , S.S 304L (ASTM A 351 Gr. CF3), S.S 316L (ASTM A 351 Gr CF3M) , Alloy 20, ASTM A 351 Gr. CN7M) Hast alloy C-22 & c-276 (ASTM A 494 Gr. CW12MW / CX2MW ) and as per speicficaiton.
12. The valves’ seat- Conical Metal to Metal disc seating/ PTFE seating with option of fixed or Renewable seat. Further metal seating can be hard-faced by StelliteTM where distortion of seat by aggressive liquid or slurry is common.
13. IPneumatic PTFE lined flush bottom valvecan also be provided with temperature sensors to measure the temperature in the vessel.