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Ductile Iron Fitting
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Expansion Joints
For water, waste water, chilled water & many other services, to permit pipelines “flex” a bit. Metallic pipes expand and contract when the ambient (or service) temperatures vary and non-metallic pipes (which may be buried) will move with ground settlement etc. Where probable movement can be envisaged the values are designed by a compensator which can flex, thus avoiding undue pipeline damage. Interesting applications are reservoir inlet/outlet connections, pump connections, differing flange standards either end, axial or angular offset of new to old pipelines. Sizes from DN50 to DN5000 and pressures of PN6 to PN25 on rubber, but the larger sizes would be lower pressure capability.. Higher pressures and temperatures in 316SS.
C Type
C Type Irrigation Hydrants have a special closing mechanism enabling gradual flow increase/decrease when the handwheel is turned, preventing slam closure.
Hydrants are available with an optional anti-frost sleeve for deep water networks, and an automatic drainage valve to bleed the body when the hydrant is closed, to prevent frost damages.
Nozzles that are used in hydrant connection have integral pressure regulator and flow limiter in order to provide constant pressure and flow rate to the farmer. Number of nozzles on the body can be increased up to 4 outlets, enabling supply to more than one farmer from a single hydrant.
Aboveground Type
Aboveground Fire Hydrants are made of ductile iron body, valve mechanism, and a spindle that controls the sealing.
When the head of the hydrant is turned counter clockwise, the spindle moves down, sealing the valve at the flow direction. In the reverse action, fire hydrant shuts-off drip tight.
Aboveground Fire Hydrants can be manufactured with 3 different lengths for various pipeline depths.
Y Type
Y Type Strainers are installed to protect system appliances, such as: pumps, flowmeters, control valves or regulating devices.
The main function is to remove foreign matter like leaves, sticks or stones from the pipelines. Foreign particles that can harm crucial appliances in the system are stuck in the filter of the strainer, and the user can check the blockage of the filter by using monometer connections.
In case of a situation where the differential pressure reading is high, the blow-off port is used to remove entrapped debris at the bottom of the body.
Y Type Strainers feature large trap capacity, low head loss and ease of both cleaning and handling..
Plug Valve
Critically acclaimed for raw sewage lines, for shut off service. Eccentricity of the plug (and its turning away from the flow path) is a great feature in allowing (sewerage) solids to pass freely. Sizes and Pressures. Sizes 3” (DN80) to 48” (DN1200) and Pressures of PN10, PN16. Smaller sizes up to DN300 can also be rated PN25
Surge Anticipating
Abrupt pump stopping is followed by a pressure drop as the water column continues traveling along the line.
The returning column hits the closed pump check valve, creating a high pressure surge wave, which travels at up to 4 Mach.
Eliminating such surge requires anticipation and pre-action.
Surge Anticipating Valves react to the pressure drop, accepting the returning column while already open, thus eliminating the surge.
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