| Brand: | Bermad |
| Category: | Control Valves, 400 Series |
| Size Range: | 40-300mm |
| Connection: | 40-80mm - Female Threaded BSP 80-300mm - Flanged |
| Engineering Data: |
Product Description
The BERMAD Model 420-X 3 Way Pressure Reducing Valve is a hydraulically operated, diaphragm-actuated control valve that reduces higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand and opens fully upon line pressure drop.
Features and Benefits
- 3-Way Hydraulically Actuated Pressure Reducing Valve
- Protects downstream systems
- Opens fully upon line pressure drop
- Advanced Globe Hydro-Efficient Design
- Unobstructed flow path
- Single moving part
- High flow capacity
- Fully Supported & Balanced Diaphragm
- Requires low actuation pressure
- Excellent low-flow regulation performance
- Progressively restrains valve closing
- Prevents diaphragm distortion
- User Friendly Design
- Easy pressure setting
- Simple in-line inspection and service
- Easy addition of control features
1. BERMAD Model IR-420-XZ reduces line pressure, protecting downhill line and
consumers
2. BERMAD Pressure Relief Valve Model 73Q
3. BERMAD Strainer Model 70F
Typical Applications
- Pressure Reducing Stations
- Flow and Leakage Reduction
- Systems Subject to Varying Supply Pressure
- Energy Saving Irrigation Systems
- Downhill Supply Lines
- Pressure Zoning
- System Maintenance Savings
Technical Data
Operation
The Pressure Reducing Pilot [1] senses Downstream Pressure [P2]. It diverts line pressure into the Control Chamber [2] should [P2] rise above the setting. Pressure then accumulates in the control chamber causing the Valve to throttle closed, decreasing [P2] to the pilot setting. The pilot releases accumulated pressure into the atmosphere when [P2] falls below the setting, thereby causing the Valve to open. Should line pressure remain below setting - the Valve opens fully. The Manual Selector [2] enables local manual closing
Materials
Body and Cover
- Polyester Coated Cast or (DN250 and larger) Ductile Iron
Spring
- Stainless Steel
Diaphragm
- Nylon fabric Reinforced NR with rugged insert
Bolts, Studs and Nuts
- Zinc-Cobalt plated Steel
Control Accessories
- Brass
Tubing and Fittings
- Reinforced Plastic and Brass
Pressure Rating
- 16 bar
Operating Pressure Range
- 0.5-16 bar
For lower pressure requirements, consult Deeco.
Setting Range
- 1.5-16 bar
Setting ranges vary according to specific pilot springs. Please consult Deeco.
Patterns and Sizes
- Globe: DN80-400
- Angle: DN80-100
End Connections
40-80mm - Female Threaded BSP
80-400mm - Flanged
Bermad - 420-3W - End Connections
Technical Specifications
For technical specifications (Flow charts, valve characteristics, dimensions, etc.) - Please refer to the Engineering Data:
For Spare Parts & Repair Kits - Please refer to the base model:
Due to the wide range of options available and criteria for correct model selection, pricing and configuration are available on application only.
Please consult with Deeco engineers for more information.
