Features & Advantages:

• ​Simple structure, easy maintenance 
• Resistant Materials 
• Solvent welding (glue-ing) connection to the pipeline
• Sizes 3” to 6” (90-160 mm)
• Extremely low energy losses 

Structure Materials:

• Body -  uPVC 
• Bonnet  - PPS 
• Spring -  SST316 
• Diaphragm -  ALD70*

* Special mixture of rubbers, developed by Dorot   to resist wide range of acids

With its simple and easy to maintain design, the Rubber-Lined, Direct-Sealing Diaphragm Valves -  Model 77 for the Mining Industry comes in a variety of structure materials resistant to strong acids that enable a precise match to the specific request on site.

Features & Advantages

• Simple structure, easy maintenance
• Large variety of offered sizes
• High resistance to any acid used on site due special mixture of rubbers
• Extremely low energy losses
• Tailor-made materials structure that enables precise match to site specification and special requests

Technical Specifications

• Sizes available from:  2” to 24” (50-600mm)
• The valves can be used in high-pressure (up to 250m, 350psi) conditions.
• Structure Materials:
  • Part Material Body - Cast iron (47), Ductile iron (67)*Bonnet - Cast iron (47), Ductile iron (67)*
  • Spring - SST316
  • Diaphragm - ALD70**
• Pressure Range: 1 - 16 bar /  19 - 230 psi

(*other materials are available, such as stainless steel, upon request)

(** Special mixture of rubbers made to resist wide range of acid)

Features & Advantages:

• Highly resistant Polypropilene material
• Sizes: 11/2” (40mm), angle patters
• Natural Normally-closed structure
• Pressure Range: 0.4 - 8 bar  / 7 - 115 psi
• Structure Materials:
  • Body - Polypropilene
  • Bonnet - Polypropilene
  • Spring - SST316 Diaphragm EPDM

The Air Release & Vacuum Break Valves, for corrosive fluid networks (Sea Water and Mining) are designed to resist corrosion by various liquids in mining, desalinization plants and chemical industry.

Features & Advantages:

• High resistance to corrosion caused by various liquids
• Simple structure, easy maintenance
• Large variety of offered sizes
• Optimum aero-dynamic performance
• Variety of Operation Modes:
  • 1st: Venting Air from a filling pipeline
  • 2nd: Vacuum Breaking (Air Intake) of a draining pipeline
  • 3rd: Release of dissolved air from a pressurized pipeline
•  Custom-made for multiple applications

Technical Specifications:

• Available sizes: 
  • For DAV-CS (High Capacity Combination and Kinetic Valves): 2” / 50mm to 10” / 250mm
  • For DAV-CH (Combination and Kinetic Valve): 3” / 80mm to 12” / 300mm

• Pressure rating: PN16 (rated 230 psi), PN25 (360 psi) and PN40 (580 psi)
• Minimal pressure for drip-tight sealing 0.2 bar
• Temp. Range Operating:    0-60°C / 32-140°F
• Storage:      -10-70°C / 15-160°F
• Connections: ISO, ANSI, BS, JIS flanges, BSP, NPT threads (50mm valves only)

The Surge Arresting Device for DAV-C-SA valves automatically prevents water hammer pressure surges associated with air release valves operation and offers optimum performance due to its air outlet that can custom-made adjusted to surge analysis results.

Features & Advantages

• Reliability: Simple, durable mechanism, fabricated from high grade materials.
• Non-Stop Functionality: Can be serviced without having to put the air valve out of service.
• Surge Arresting:  Automatically prevents water hammer pressure surges associated with air release valves operation
• Optimum performance:  Air outlet can be adjusted according to surge analysis results, on site to a required aero-dynamic performance. The SA addition is assembled on user selected valves only (at local high elevated points). The flow through other valves remains unrestricted.
• Simplicity – Can be easily assembled on any of DAV-C series air valves.

Technical Specifications:

• Available sizes: 
  • DAV-CS-KA-SA (High Capacity Combination and Kinetic Valves): 2” /  50mm to 10” / 250mm
  • DAV-CH-KA-SA (Combination and Kinetic Valve): 3” / 80mm to 12” / 300mm

• Pressure rating: PN16 (rated 230 psi), PN25 (360 psi) and PN40 (580 psi)
• Minimal pressure for drip-tight sealing 0.2 bar
• Temp. Range Operating: 0-60°C / 32-140°F
• Storage: -10-70°C / 15-160°F
• Connections: ISO, ANSI, BS, JIS flanges, BSP, NPT threads (50mm valves only)