PTFE Lined Flush Bottom Valve
Bhudev Polymer PTFE Lined Flush Bottom Valves are mounted to the lowest point of vessels and reactors to drain corrosive slurries and liquids completely without dead accumulation zones. Offered with disc opening into vessel or opening into valve.
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Quick ReplyKey Engineering Highlights
- Zero-dead-leg design flush with vessel bottom nozzle
- Available in upward opening (into tank) and downward opening (into valve)
- Integrated temperature sensor connection option on plug tip
- Live-loaded PTFE bellows stem seal prevents gland emissions
All components are manufactured in our specialized industrial facility located at GIDC Chhatral, Dist. Gandhinagar, Gujarat. The seamless fluoropolymer liner completely shields all wetted metal surfaces from chemical attack and fluid contamination.
Available Construction Variants
- Disc Opens Upward Into Vessel
- Disc Opens Downward Into Valve
- Pneumatically Actuated
| Technical Parameter | Verified Specification Standards |
|---|---|
| Product Designation | PTFE Lined Flush Bottom Valve (Reactor & Vessel Drainage) |
| Governing Standard | ASTM F1545 (Standard Specification for Plastic-Lined Ferrous Metal Pipe, Fittings, and Valves) |
| Flange Specification | ANSI B16.5 Class 150# / Class 300# Raised Face (RF) / DIN PN10 / PN16 |
| Available Sizes | 1.5" x 1" to 6" x 4" (Inlet x Outlet) |
| Design Temperature Limit | -29°C to +200°C |
| Design Working Pressure | Class 150# / PN16 |
| High Voltage Spark Test | 20,000 Volts DC non-destructive spark detection per ASTM F1545 |
| Hydrostatic Shell Test | 1.5 x Working Pressure (30 kg/cm² / 425 psi) for 3 minutes minimum |
| Pneumatic Seat Test | 6 bar air pressure with zero allowable bubble leakage |
| Custom Fabrication | Available on Request per client piping isometrics |
Lining Fluoropolymer Options
We select virgin grade fluoropolymers matched precisely to process chemistry and operating temperature:
- PTFE: -29°C to +200°C, universal chemical inertness, in-house paste extrusion.
- PFA: -29°C to +200°C, melt-processable, superior clarity and permeation resistance.
- FEP: -29°C to +150°C, high dielectric strength and smooth non-stick surface.
- PVDF / PP / HDPE: Cost-effective options for mild corrosive and water treatment lines.
Housing & Metallurgy Options
Rugged metallic outer shells provide high pressure containment and mechanical strength:
- Cast Steel: ASTM A216 Gr. WCB for heavy-duty pressure valves and fittings.
- Carbon Steel Pipe: ASTM A106 Gr. B seamless pipe spools with A105 flanges.
- Ductile Iron: ASTM A395 / GGG40.3 for economical vibration-absorbing installations.
- Stainless Steel: CF8 / CF8M (SS304/SS316) for highly corrosive external plant atmospheres.
