Port Size: 4 inch Flange DN100 , 5 inch Flange DN125 , 6 inch Flange DN150 , 8 inch Flange DN200 , 10 inch Flange DN250, 12 inch Flange DN300 , 2 inch Flange DN50, 21/2 inch Flange DN65 , 3 inch Flange DN80
Operation: Pressure Assisted
Seals: NBR, FKM (Viton)
Media: Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Water, Water (RO/Pure/Demin)
Flanged Stainless Steel Pilot-Assisted Float Control Valve – Z-Tide Industrial BFF-S Series
The Z-Tide Industrial BFF-S Series is a premium flanged pilot-assisted float control valve designed to automatically maintain liquid levels in storage tanks, reservoirs and process vessels. Manufactured in either 304 or 316 stainless steel, the BFF-S Series combines excellent corrosion resistance with exceptionally high flow capacity, making it ideal for industrial process systems, food production, chemical processing and water treatment applications. The remotely mounted float pilot automatically controls the main valve, opening to refill the tank as the liquid level falls and closing smoothly once the required level is reached.
Valve function & operation
Function: Pilot-assisted automatic float control valve
Normally closed main valve
Operating principle: Pressure-assisted piston with external float pilot controller
Automatically maintains liquid level
Remote float pilot valve required
(Float pilot valve sold separately)
Connection to pilot: ½" BSP female threaded adaptor
Flange sizes: DN50 to DN300 PN16
Optional flange standards:
ANSI 150 lb
JIS10K
JIS20K
PN10
PN25
Other flange standards available on request
Pressure & flow
Working pressure: 0.5 to 25 Bar
Pressure tested to: 38 Bar
Maximum media temperature: +80°C
Maximum media viscosity: 50 cSt
Mounting position: Any position
Construction & materials
Body: 304 or 316 stainless steel
Pressure tested to 38 Bar
Cylinder: 304 or 316 stainless steel
Piston: 304 or 316 stainless steel
Seat: 304 or 316 stainless steel
Internals: Stainless steel
Spring: 304 stainless steel
Controller adaptor: 304 stainless steel
Standard seals: NBR
Optional seals:
FKM (Viton)
Media compatibility
✓ Water
✓ Process water
✓ Cooling water
✓ Light oils up to 50 cSt
✓ Fluids compatible with the valve materials
Performance & design
✓ Patented cylindrical piston design
✓ Exceptionally high flow capacity compared with conventional float control valves
✓ Remote float pilot allows the main valve to be installed outside the tank for easier servicing
✓ Externally mounted pilot controller allows maintenance without removing the main valve body from the pipeline
✓ Unique U-ring sealing system provides long, reliable, maintenance-free service
✓ Automatic opening and closing provides accurate liquid level control without electrical power
Applications
Storage tank level control
Reservoir filling systems
Process tanks
Chemical processing
Food and beverage manufacturing
Pharmaceutical production
Water treatment plants
Cooling water systems
Corrosive fluid handling
General industrial process control
Manufacturing quality
Manufactured using heavy-duty 304 or 316 stainless steel with precision-machined stainless steel internal components, the Z-Tide Industrial BFF-S Series has been engineered for demanding industrial environments where corrosion resistance, reliability and automatic liquid level control are essential. The remotely mounted float pilot valve continuously monitors the liquid level within the tank and controls the main valve through a simple pilot pressure system. As the liquid level falls, the float pilot releases pressure from the control chamber, allowing the main valve to open rapidly and refill the tank. As the tank reaches the preset level, the float pilot closes, pressure builds within the control chamber and the main valve closes progressively to minimise hydraulic shock. The patented cylindrical piston design provides exceptionally high flow capacity while allowing the main valve to be installed outside the reservoir, simplifying inspection, servicing and long-term maintenance.
Ordering information
Simply select the required body material (304 or 316 stainless steel), flange size, seal material and flange standard before adding the valve to your basket. A compatible ½" float pilot valve is required for operation and is available separately. Alternative flange standards, seal materials and custom sizes up to DN1400 (56") are available on request.
Port Size:
4 inch Flange DN100 , 5 inch Flange DN125 , 6 inch Flange DN150 , 8 inch Flange DN200 , 10 inch Flange DN250, 12 inch Flange DN300 , 2 inch Flange DN50, 21/2 inch Flange DN65 , 3 inch Flange DN80
Operation:
Pressure Assisted
Seals:
NBR, FKM (Viton)
Media:
Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Water, Water (RO/Pure/Demin)
Pressure:
0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar, 13 Bar, 14 Bar, 15 Bar, 16 Bar, 17 Bar, 18 Bar, 20 Bar, 25 Bar
