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Bermad - 350 Series - Filter Backwash - Hydraulic Valve

350 Series _ Backwash valve - Product Image
Brand: Bermad
Category: Control Valves, 350 Series - Filter Backwash
Size Range:

50mm

Product Description

The BERMAD Model IR-2x2-350 is a compact 3-port valve, in a T configuration. It is double-chambered, hydraulically operated, and diaphragm actuated.

Designed for automatic backwashing of filtration systems, the BERMAD Model IR-2x2-350-P is available in Angle flow (A) and Straight flow (S) configurations.

Features & Benefits

  • Line Pressure Driven
  • Double Chambered Design
    • Wide application range
    • Requires low actuation pressure
    • Protected diaphragm
  • Dynamic Sealing
    • Seals at very low pressure
    • Prevents seal friction and erosion
  • Engineered Plastic Valve Design
    • Highly durable, chemical and cavitation resistant
  • Short Valve Travel
    • Smooth changes in flow direction
    • Eliminates mixing of supply and wastewater
  • User- Friendly
    • Can be installed in various orientations
    • Simple in-line inspection and service

Typical Applications

  • Automatic Backwash of Filter Batteries
    • Gravel Filters
    • Disc Filters
    • Screen Filters
  • Single Filter Autonomic Backwash System
  • Angled or Straight Installations
350 Series - Typical Applications

[1] BERMAD Model IR-2x2-350-A-P allows flow into the filter, switches closed upon pressure rise command blocking inlet to filter, and enables backwash flow from the filter.

[2] BERMAD Backwash Flow Control Valve Model IR-470-beKU

[3] BERMAD Water meter Model WPH

[4] BERMAD Air Valve Model ARA-A-P-P

Technical Data

Operation (Straight Flow)

350 Series - Straight Flow

A Hydraulic Command [1], which pressurizes the Lower Control Chamber [2], forces the Diaphragm [3] actuated Plug Assembly [4] to move towards the Supply Port Seat [5], eventually sealing it drip tight. This allows flow from the filter through the Drain Port Seat [6]. Venting the upper control chamber causes the line pressure, together with the Spring [7] force, to move the Valve back to filtration mode.

Operation (Angle Flow)

350 Series - Angle Flow

A Hydraulic Command [1], which pressurizes the Upper Control Chamber [2], forces the Diaphragm [3] actuated Plug Assembly [4] to move towards the Supply Port Seat [5], eventually sealing it drip tight. This allows flow from the filter through the Drain Port Seat [6]. Venting the upper control chamber causes the line pressure, together with the Spring [7] force, to move the Valve back to filtration mode.

Materials

Valve Body, Separating Partition & Lower Adaptor

  • Polyamide 6 – 30GF Black

Cover

  • Polyamide 6 – 30GF
  • Angle Flow: Black
  • Straight Flow: Gray

Diaphragm

  • NR-AL52 Nylon Fabric Reinforced

Seats, Diaphragm Washers

  • Brass

Plug, Plug Washer

  • Acetal Copolymer Black

Stopper Disk

  • PVC-U

Seal, O-Rings

  • NBR

Spring

  • Stainless Steel AISI 302

Shaft

  • Stainless Steel AISI 303

External Bolts, Studs, Nuts & Disks

  • Stainless Steel

Control Chamber Displacement Volume

  • Control Chamber Displacement Volume:

Operating Pressure

  • 0.7-10 bar; 10-145 psi

External Operating Pressure

  • 85%-100% of operating pressure

Maximum Temperature

  • 65°C;150°F

End Connections

  • Threaded, Grooved (with adaptors)

Flow Patterns

  • Angled Flow, Reverse Angled Flow, Straight Flow, Reverse Straight Flow

Hydraulic data

350 Series - Hydraulic Data

Technical Specifications

350 Series - Technical Specification

Bermad - 350 Series - Filter Backwash - Hydraulic Valve - Repair Kits

Product Code Size Description
350050-RK 50mm Repair Kit - Elastomers for 350 Series Backwash Valve
350050B-RK 50mm Repair Kit - Elastomers for 350 Series Metal Backwash Valve

Bermad - 350 Series - Filter Backwash - Hydraulic Valve

Product Code Size Description
350050-SF 50mm Bermad Plastoc 350 Series Backwash Valve - Straight Flow
350050-AF 50mm Bermad Plastoc 350 Series Backwash Valve - Angle Flow
350050-SRF 50mm Bermad Plastoc 350 Series Backwash Valve - Straight/Reverse Flow
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