2 inch Backwash valve

Automatic Backwash valve of Filter

Filter Backwash Hydraulic Valve

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2X2 Plastic

The CDFS Model IR-2x2-350-P 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 CDFS Model IR-2x2-350-P is available in Angle flow (A) and Straight flow (S) configurations. 


 Features and Benefits

For full technical details, refer to Engineering Section.

 

■ 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 of flow direction

 

❏ Eliminates mixing of supply and waste water

 

■ 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

[1] CDFS 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] CDFS Backwash Flow Control Valve Model IR-470-beKU

 

[3] CDFS Water meter Model WPH

 

[4] CDFS Air Valve Model ARA-A-P-P


Technical Data

 

Control Chamber Displacment Volume: 0.13 liter; 0.04 gallon

 

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

 

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



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