Bi-Stream Air Release Valve

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Standard Specifications

Brand Name R&D Multiples (Metal-Cast) PVT. LTD
Model Name Bi-Stream Air Release Valve
Body Material
Ductile Iron
Float Materials
Stainless Steel
Cover Ductile Iron
EPDM Rubber
Delivery Lead Time 8-12 weeks


The latest series of R & D Multiple’s Combination type : (Air Vacuum + Air Release Valves) amalgamates exotic features with excellent workmanship to make them the unique solution for any challenging application. Be it the filling / draining of the pipeline, on-line (under flow & pressure) air release, or the anti-vacuum function at the time of pump tripping, the ‘R & D Multiple’s Bi-Stream Air Release Valve’’ is the ultimate & most reliable solution.


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  • Very efficient air release/ inlet mechanisms.
  • Specially designed tamperproof cover allowing free, all-round (360 Degrees) air movement.
  • Stainless Steel Float & Cage design allowing precision, long guides to the Float all through-out the travel ensuring perfectly centred float always.
  • Aero-Dynamically designed large flow passages.
  • Combination of Air-Vacuum & Air Release functions.
  • Sturdy & Robust construction.
  • Float not subjected to differential pressure & hence chances of sticking/ necking are precluded.
  • Choice of shell MOC : CI / SGI / CS / SS / D2 to suit applications.
  • All internal active working parts: Stainless Steel.
  • PN10 / 16 /25 Pressure Ratings. (Enquire for Others).
  • Complies with the requirements of IS 14845 & AWWA- C512.



  • Efficient and aero-dynamic flow passages.
  • One piece tamper-proof cover allowing free movement of large volumes of air.
  • Straight through air release opening of large size.
  • Perfectly centered, precision guided float travel
  • The design and construction preclude premature slam-shutting of the float.
  • Long life resilient seal which is replaceable at site with stainless steel backing ring.
  • Floats of optimum dimensions, volume and specific gravity ensuring quick response to level changes.
  • Can be supplied with gate valve / butterfly valve as isolation valve.
  • Very high movement rates: (Inlet and outlet)


About R&D Multiples (Metal-Cast) Pvt. Ltd.

With over 30 years of experience, R&D Multiples has established itself as a leading manufacturer of industrial valves. Covering a range of sizes up to 4.0 meters and capable of handling pressure ratings of up to 40 bar, their valves offer exceptional versatility. Complemented by a wide selection of operators, actuators, and accessories, their valves are designed to enhance user-friendliness.

Renowned for their quality and reliability, R&D Multiples ensures that their valves maintain a strong reputation in the industry. This is achieved through the implementation of modern design and manufacturing techniques. As a result, prominent infrastructure companies in the region consistently choose their valves as the preferred option.


Learn more: Company Profile

Bi-Stream Air Release Valve