JASH FLANGE BACK FRAME CAST IRON SLUICE GATES

SPECIFICATION : These are flange back frame sluice gates made generally as per AWWA C560 / BS 7775 / IS13349.

APPLICATION OF FLANGE FRAME CAST IRON SLUICE GATES: These sluice gates are mounted on the face of a wall and are used to isolate flow in and out of a conduit. Such gates can be manufactured for seating as well as unseating head applications upto 40 meters.

Flange back frame sluice gates can be mounted on face of wall or puddle pipe flange or wall thimble. For mounting on puddle pipe flange the dimensions and hole drilling on the flange of gate frame has to be specifically provided to match pipe flange or vise versa.

Flange back frame sluice gates mounted on wall thimble are highly recommended where maximum practical water tightness is an important criterion for the gate and hence for which a gate shop tested at the manufacturer's works for its actual leakage performance is a must.

Advantages of Wall thimble mounted sluice gates :

•	With such sluice gate civil construction schedules can be advanced as thimbles can be made and supplied earlier for prior embedment in concrete. The sluice gates can then be mounted later when received.
•	The installed sluice gate can be dismounted without breaking concrete and remounted with equal ease. This helps removal for repairs and future replacement. If required, opening can be kept sealed with a blind flange when the sluice gate is not there.
•	Erection and installation procedure of sluice gates are simple and economical.
•	Mounting the sluice gate through machined flanges of wall thimble and gate frame, with a gasket joint in-between, helps maintain alignment and proper contact between the mating sealing faces. This improves water sealing characteristic of the sluice gate.
•	Machined back flange of sluice gate makes it possible to mount the sluice gate on a test bench for shop leakage testing at the manufacturer's works for verifying actual leakage and soundness of casting at operating head. This helps ensuring and verifying the specified leakage limits and ensuring required quality standards.
SALIENT FEATURES OF CAST IRON SLUICE GATES
•	Rigid flange / flat back cast iron sluice gate frame designed for mounting directly on face of wall using anchor bolts (without wall thimble).
•	Open top frame provided with short length extension guides to retain at least one half the vertical height of the shutter when the shutter is in the open position.
•	Adjustable type cast iron wedging devices lined with non-corroding metal strips / wedges. Adjustable wedges on shutter allow future on site adjustment of wedges to enable increased wedging action and compensate possible wear of sealing faces.
•	Offered for seating as well as unseating head applications, as required. Gates offered for seating head application provided only with adjustable side wedges whereas gates offered for unseating head application provided with adjustable side as well as top & bottom wedges.
•	Non corroding metal to metal sealing faces/strips on the periphery of gate aperture for conventional bottom closure gates. Sealing faces fitted by counter sunk head machine screws on plain machined faces of frame & shutter.
•	Offered with conventional bottom closing or flush bottom closing as required. Flush bottom closing gates upto 600mm height of opening provided with resilient seal fitted at the invert of gate frame and gates with height of opening higher than 600mm provided with resilient seal fitted at the bottom of shutter/slide.
•	Provided with threaded Stem connecting block housed in shutter to connect the shutter with the spindle.
•	Rising spindle gate with lift mechanism mounted on separate platform above gate frame to transfer thrust reaction on platform.
•	Single piece or multi-piece spindle as required to connect the stem block mounted on shutter to the sluice gate operating arrangement.
•	Couplings as required to connect the multi-piece spindles.
•	Adjustable type stem guide brackets as required to guide the spindle of the sluice gates.
•	Manual lift mechanism to enable a single person to operate cast iron sluice gate with effort <20 Kgs.
•	Sluice gates are provided with anchor bolts with nuts and washers as required for frame extension guides, stem guide brackets and pillar of lift mechanism.
•	sluices gates Offered with epoxy painting or as required by the client.

MATERIALS OF CONSTRUCTION FOR CAST IRON SLUICE GATES:

Depending on application and requirement, the client may select and specify the material of construction for various components from the alternatives provided herein.


SHOP TEST PARAMETERS FOR CAST IRON SLUICE GATES :

• Leakage test at operating pressure for sluice gate leakage performance.
• Hydrostatic body test at 1.5 times the maximum operating pressure for soundness of castings.
• Movement test for checking interference free movement of complete gate assembly.
• Seat clearance check for checking clearance between mating sealing faces.

OPTIONAL FEATURESOF SLUICE GATES:

• Wall Thimble of F-shaped or E-shaped section as required.
• Metal sealing faces fitted in rectangular grooves or in dovetailed grooves.
• Self Contained sluice gate with lift mechanism mounted directly on gate frame.
• Stem cover of sluice gates either made of galvanized steel or transparent tube.
• Gate opening indicating arrangement.
• Non rising spindle .
• Electrically operated lift mechanism with manual override facility.
• Pneumatically operated lift mechanism with manual override facility.
• Portable electric / hydraulic operator for manually operated gates.