Vent-O-Mat air release valves.
Vent-O-Mat air release valves.
SERIES RBX PURCHASE SPECIFICATION VENT -O- MAT MODEL
The air release & vacuum break valve shall be of the compact single chamber design with solid cylindrical H.D.P.E. control floats housed in a tubular stainless steel body with epoxy powder coated cast iron or steel ends secured by means of stainless steel tie rods.
The valve shall have an integral 'Anti - Shock' Orifice mechanism which shall operate automatically to limit transient pressure rise or shock induced by closure to 2 x valve rated working pressure. The intake orifice area shall be equal to the nominal size of the valve i.e., a 150mm (6") valve shall have a 150mm (6") intake orifice. Large orifice sealing shall be effected by the flat face of the control float seating against a nitrile rubber 'O' ring housed in a dovetail groove circumferentially surrounding the orifice. Discharge of pressurized air shall be controlled by the seating & unseating of a small orifice nozzle on a natural rubber seal affixed into the control float.
The nozzle shall have a flat seating land surrounding the orifice so that the damage to the rubber seal is prevented. The valve construction shall be proportioned with regard to material strength characteristics, so that deformation, leaking or damage of any kind does not occur by submission to twice the designed working pressure. The valve design shall incorporate an over pressure safety feature that will fail without an explosive effect, such as is normally the case when highly compressed air is released suddenly. The feature shall consist of easily replaceable components such as gaskets, seals or the like.
Connection to the valve inlet shall be facilitated by a screwed BSP (ISO R7) or NPT male end (DN25 (1") & DN50 (2") only) or a flanged end conforming to PN10, 16, 25 or 40 ratings of BS 4504 or SABS 1123 Standards or, ANSI B16. 1 Class 125 and Class 250 and ANSI B16. 5 Class 300 Standards. Flanged ends shall be supplied with the requisite number of stainless steel or mild steel screwed studs inserted for alignment to the specified standard. Nuts, washers, or jointing gaskets shall be excluded.
AIR RELEASE AND VACUUM BREAK VALVES SERIES RGX “ANTI-SURGE”
The Unique defence against pipe bursts and pipeline system damage! Vent-O-Mat Series RGX has evolved from a long lineage of research and development into a product that has proven unsurpassed for air release, vacuum protection, surge alleviation and pipeline flow enhancement.
The Unique defence against pipe bursts and pipeline system damage! Vent-O-Mat Series RGX has evolved from a long lineage of research and development into a product that has proven unsurpassed for air release, vacuum protection, surge alleviation and pipeline flow enhancement.
The basis of the Vent-O-Mat design is in the understanding of the physical laws that govern air valve and pipeline operation. Reaction to pipeline dynamics is therefore instantaneous and protection provided is relevant to the pipeline’s needs.
Vent-O-Mat Series RGX truly represents the pinnacle of valve design evolution.
This valve design provides the most comprehensive, effective and efficient pipeline protection relative to initial cost of any other available pipeline component.
This can easily be gauged from below: Automatic Surge Protection The Unique Series RGX valve incorporates as standard, three design features to automatically protect a pipeline, under all pipeline operating conditions, from the destructive surge and water hammer phenomena.
These features are independent of any mechanical devices ensuring reaction in a very low milli second time span. Effective Air Release
The RGX design ensures effective de-aeration under all pipeline flow and operating conditions, via either one of three discharge orifices. Vacuum Protection
The RGX Series large orifice diameters equal the nominal size of the valve. This ensures the least possible resistance to the intake of air and consequently the least possible negative pressure within a draining pipeline.
The use of solid, cylindrical floats ensures instantaneous reaction, discourages the “Venturi” phenomenon and is a further guarantee of effective vacuum protection. Guaranteed Performance The RGX has been designed and developed to provide the optimum usable and safe performance relative to all functions. Selection data has been substantiated through third party testing and can therefore be confidently referenced.
The surge protection function of the RGX design has been incorporated in the well-known SURGE 5 surge analysis software programme and can be analysed with great accuracy in other commercially available surge analysis programmes such as FLOWMASTER and TRANSAM.
VENT-O-MAT SERIES RPS LIGHT WEIGHT AIR RELEASE VALVES FOR IRRIGATION
The Vent-O-Mat Series RPS Valve is specially developed as a Lightweight Air Release Valves for the irrigation Market.
The RPS is available in a DN50 mm Double Orifice Valve and DN25 mm and DN15 mm Single Small Orifice Air Release valves.
Double Acting "Anti-Shock" Air Release and Vacuum Break Valve The DN50 Incorporates the Trade Mark Vent-O-Mat “Anti-Shock” Technology marrying it with the Patented diaphragm operated cartridge which allows full discharge through a 32 mm port in both pressurized Air Release and “Anti-Shock” Air Discharge Modes through a and12 mm 3 port.
Single Acting Small Orifice Air Release valve
The DN25 mm and DN15 mm Single Small orifice Valve use the same diaphragm technology to offer the best possible discharge under pressurized discharge conditions.
Benefits
Simple efficient action Reduces water hammer Multifunction versatile product Ensures maximum protection Unique self cleaning operation UV stabilised Robust lightweight and compact Replaces any existing valves