| Brand: | Bermad |
| Category: | Control Valves, Fire Protection Series |
| Size Range: | 50-300mm |
| Connection: | Flanged |
Product Description
The Model FP 450-60 Level Control Valve with Modulating Horizontal Float is a hydraulically controlled, diaphragm-actuated, control valve that controls reservoir filling to maintain constant water level, regardless of fluctuating demand.
- Reservoir filling
- Low volume reservoirs
- Large surface area reservoirs
Features and Benefits
- Line pressure driven – Independent operation
- Modulating hydraulic float control
- “Always Full” reservoir
- Fully supported vulcanized diaphragm
- One moving part
- Rugged radial seal disk
- Protected diaphragm
- Dynamically restrained actuation
- Moderate valve reaction
- Non-slam closing
- Balanced rolling-diaphragm
- High flow capacity
- Very low opening and closing pressure requirements
- In-line serviceable – Easy maintenance
- Flexible design – Easy addition of features
- External installation – Pilot operated
Major Additional Features
- Pressure sustaining – 453-60
- Flow control – 457-60-U
- Electric float backup – 450-60-65
Typical Applications
Large Fire Water Reservoirs
Mechanical level control valves present various issues:
- Valves are often at inaccessible locations
- Float and arm assemblies are heavy and cumbersome
- Relatively low maximum pressure
- the Tendency for mechanical devices to leak
- Increased valve corrosion due to the humid environment inside the tank
- Difficult maintenance
The Model FP 450-60 overcomes these difficulties by applying a float pilot, separated from the valve, which controls a Hydraulic Valve. Consider replacing the “60” horizontal float assembly with the “67” vertical float assembly for:
- Heavy duty service
- Easy level setting
- Aggressive or corrosive fluids
Bermad - FP-450-60 - Typical Applications - Large Fire Water Reservoirs
Rooftop Reservoirs
Rooftop reservoir level control is attained by electric control of the basement pumps according to reservoir level. As the overflow of a rooftop reservoir can cause costly damage, hydraulic back-up protection is recommended. Where system design requires an “always full” rooftop reservoir, the Model FP 450-60 Modulating Level Control Valve:
- Modulates open immediately when the level starts dropping
- Closes securely to prevent overflow
Secured closing, even after long periods of the valve being open, is ensured by the fully developed hydraulic closing force applied over the peripherally, one-piece balanced rolling diaphragm, vulcanized with a rugged radial seal disk.
Bermad - FP-450-60 - Typical Applications - Roof Top Reservoirs
Technical Data
Operation
The Model FP 450-60 is a float-controlled valve equipped with a 2-way, horizontal float pilot assembly. The needle valve [1] continuously allows flow from the valve inlet into the control chamber [2]. The float [3] is attached to the float pilot arm [4]. The location of the float assembly and the position of the float determines the level setting. Should the level rise toward the setting, the float pilot [5] throttles, and pressure in the control chamber accumulates causing the main valve to throttle closed, reducing the filling rate, and eventually closing drip tight. Should the level fall, the float pilot releases pressure from the control chamber causing the main valve to modulate open. The needle valve controls the closing speed. The cock valve [6] enables manual closing.
Manufacturers Standard Materials
Main valve body and cover
- Ductile Iron ASTM A-536
Main valve internals
- Stainless Steel & Elastomer
Control Trim System
- Brass control components/accessories
- Stainless Steel 316 tubing & fittings
Elastomers
- Polyamide fabric reinforced Polyisoprene, NR
Coating
- Electrostatic Powder Coating Polyester, Red (RAL 3002)
Optional Materials
Main valve body
- Carbon Steel ASTM A-216 WCB
- Stainless Steel 316
- Ni-Al-Bronze ASTM B-148
Control Trim
- Stainless Steel 316
- Monel® and Al-Bronze
- Hastelloy C-276
Elastomers
- NBR
- EPDM
Coating
- High Built Epoxy Fusion-Bonded with UV Protection, Anti-Corrosion
Float Data
Standard Materials:
- Pilot body: Stainless Steel
- Float: Stainless Steel
- Float rod: Stainless steel
Working temperature:
- Water up to 50ºC (122ºF)
Pressure rating:
- 16 bar (230 psi)
Ports:
- 1/2” BSP
If inlet pressure is below 0.7 bar (10 psi) or above 10 bar (150 psi) consult Deeco.
Main Valve
Connection Standard
- Flanged: ANSI B16.42 (Ductile Iron), B16.5 (Steel & Stainless Steel), B16.24 (Bronze), B16.1 (Cast Iron), ISO PN16
Water Temperature
- 0.5 – 50°C (33 – 122°F)
Available Sizes
- Globe: 11/2, 2, 21/2, 3, 4, 6, 8, 10 & 12"
- Angle: 2, 3 & 4"
Pressure Rating
- Max. inlet: 250 psi (17 bar
Technical Specifications
Dimensions and Weights
Notes:
1.L1 is for flanged valves.
2. L2 is for threaded NPT or BSP
3. Tw & Th are max. for pilot system.
4. Data is for envelope dimensions, component positioning may vary.
5. Provide space around valve for maintenance.
Due to the wide range of options and criteria for correct model selection, pricing and configuration are available on application only.
Please contact us for more information.
