Air Vents

Netafim
JAIN VBKV-1

Netafim:

• Ensures maximum protection of irrigation system with proper sizing and placement
• Aerodynamic float design ensures valve closure as water fills the system, remains open when air pressure reaches 5-12 psi depending on the model
• Large capacity valves dampen water hammer preventing pipes and fittings from cracking or bursting
• Unique rolling seal feature allows gradual opening, closing and self-cleaning
• Made of corrosion-resistant reinforced UV protected nylon - no metal parts to rust or corrode, no need for spare parts
• Guardian with Shrader Valve is ideal for measuring local line pressure

• 1" and 2" Combination Air/Vacuum Relief and Continuous Acting Air Vents
  • For discharge and intake of large volumes of air at pump and filter stations, along mains and at the end of mainlines
  • For continuous air release at high point in pipe network or upstream of manifolds
  • Every 1,500 feet along mainlines
• 2" Combination Air Release/Vacuum Guard and Continuous Acting Air Vent
  • Releases air at pump priming and maintains the prime by not allowing air intake in long and/or   undulating suction lines to pump stations
  • Releases entrapped air while ensuring continuous prime at centrifugal pumps
  • Builds up siphons with air release, maintains the siphon by continuously releasing air and not   allowing air intake
• 3/4" & 1" Automatic Continuous Acting Air Vents
  •  For high spots where air accumulates
• 3/4" & 1" Continuous Acting/Vacuum Guard Air Vents
  •  For release of entrapped air while ensuring continuous pump prime with no air intake in centrifugal pumps and pump suction lines
  •  Protects mechanical seals in vertical pumps by not allowing air to accumulate in stuffing boxes
  •  Maintain siphons with continuous air release while not allowing air intake
• 3/4", 1", 2", 3" Guardian Air and Vacuum Relief Air Vents
  • Commonly used downstream of valves, primarily at manifolds, to break vacuum caused by system draining
  • On sloping terrain to prevent collapsing of pipes caused by vacuum when pipe networks drain
  • Upstream of valves for air discharge during system start-up

• Maximum operating pressures:
  • 1", 2" Nylon Combination: 240 psi
  • 1", 2" Nylon Combination (150): 150 psi
  • 3/4" and 1" Automatic: 240 psi
  • All Sizes Guardian: 150 psi
• Pressure for vent to remain open:
  • 3/4" and 1" Guardian: 5 psi
  • 2" Guardian: 10 psi
  • 3" Guardian: 8 psi
  • All combination and automatic: 12 psi

VBKV-1:

• ​​​​Air Release / Vacuum Relief Valves provide vital protection to pipe line systems by preventing: air restrictions, water hammer, and collapsed pipes due to a vacuum
• Available in dual, continuous and combination models
• Instant and continuous vacuum relief
• Durable, weather resistant and non-corrosive material
• Removable top for seal maintenance
• Protects irrigation systems and components
• Bright color allows easy visibility
• Slam resistant models available
• Easy to install
• Performance data tested and verified at C.I.T