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Double Orifice Air Release Valve Triple fucntion

Combination Air Release Valve  which is self-operating float type and can be fitted to any peak on a pipeline, capable of fulfilling the venting requirement of the pipeline and release any air or gas under pressure accumulated in the pipe system automatically.

Triple fucntion Double Orifice Air Valve, which is self-operating float type and can be fitted to any peak on a pipeline, capable of fulfilling the venting requirement of the pipeline and release any air or gas under pressure accumulated in the pipe system automatically.

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    product details

    3 functions

    ● to discharge a large air flow from a water pipeline

    ● to admit a large air flow into a water pipeline

    ● to purge entrapped air from pipeline under pressure

    Main Features

    ● ABS float (SS upon request)

    ● 100% water tightness

    ● Float moving in specified guide rail.

    ● Anti-insects screen (upon request)

    ● All iron parts with contact to the water are coated with fusion bonded epoxy to ensure high durability

    ● Resilient seals made of EPDM rubber and seat by ABS

    ● No moving parts contact the internal coating

    ● Full bore body design

    ● WRAS approved paint and rubber upon request

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    Comply Standards

    ● Hydrostatic tests according to EN-12266-1, class A.

    ● Designed to EN-1074/4 and AWWA C-512

    ● Flanges to EN-1092/2, BS4504, or ANSI-150

    Service Fields

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    ● For water and neutral liquid applications (not sewage)

    ● main transmission pipelines

    ● irrigation system

    ● fire fighting

    Technical details

    No. Component Standard Material Optional upon request
    1 Body of big chamber ductile cast iron GJS 500-7  
    2 Float Guide ABS  
    3 Float of big chamber ABS stainless steel AISI 304/316
    4 Support ABS  
    5 Sealing Ring NBR EPDM
    6 Seat Support ABS  
    7 Cover ductile cast iron GJS 500-7  
    8 Bolt galvanized carbon steel zinc plated stainless steel AISI 304/316
    9 Nut galvanized carbon steel zinc plated stainless steel AISI 304/316
    10 Washer galvanized carbon steel zinc plated stainless steel AISI 304/316
    11 Cowl ductile cast iron GJS 500-7  
    12 O-Ring NBR EPDM
    13 Body of small chamber ductile cast iron GJS 500-7  
    14 Vent Cap CuZn39Pb1 Brass  
    15 O-Ring NBR EPDM
    16 Bracket CuZn39Pb1 Brass  
    17 Seat NBR EPDM
    18 Hing Pin stainless steel AISI 304 stainless steel AISI 316
    19 Float of small chamber ABS stainless steel AISI 304/316
    20 Bolt galvanized carbon steel zinc plated stainless steel AISI 304/316
    21 Washer galvanized carbon steel zinc plated stainless steel AISI 304/316
    Air-Valve-Double-Orifice-triple-function-7

    Dimensions

    SIZE Outline dimensions Flange dimensions (mm)
    EN1092 ASME B16.1/B16.42 AS 4087
    DN inch L B C H D K n-d D K n-d D K n-d
    *DN40 1.5" 125 165 88 270 150 110 4-φ19 150

    98.5

    		 4-φ16 - - -
    DN50 2'' 125 165 88 270 165 125 4-φ19 165

    120.5

    		 4-φ19 - - -
    DN65 2.5'' 125 165 88 300 185 145 4-φ19 185

    139.5

    		 4-φ19 - - -
    DN80 3'' 125 240 112 355 200 160 8-φ19 200

    152.5

    		 4-φ19 185 146 4-φ18
    DN100 4'' 125 270 128 430 220 180 8-φ19 229

    190.5

    		 8-φ19 215 178 4-φ18
    *DN125 5'' 125 280 128 430 285 210 8-φ19 285

    216.0

    		 8-φ22 - - -
    DN150 6'' 125 315 158 480 285 240 8-φ23 285

    241.5

    		 8-φ22 280 235 8-φ18
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    Product Display

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