Product Enquiry

Penstock Enquiry form

Your Name (required)
Email (required)
Your Organisation
Telephone (required)
Quantity (required)
Material (required)
Opening size mm
mm high
mm wide
Opening direction
Invert to operating floor level (meters)
Mounting head at invert
Meters on-seating
Meters off-seating
Top seal required
Side frames
Method of operation
Special requirements or message

Some commonly used terms:

Actuator – electric, pneumatic, oil hydraulic, water hydraulic
Embedded – frame is recessed into either the wall or floor
Invert – bottom part of the frame
Lift – handwheel, geared operator
Non-rising stem – the stem is fixed to the lift or actuator nut and turns relative to the door. The lift nut is often on the gate
Off seating – water pressure pushes penstock off the wall
On seating – water pressure pushes penstock onto the wall

Operating Floor Level – Floor level at the operator’s feet
Pedestal – stand onto which is mounted the lift or the actuator
Rim Pull –Force required at rim of handwheel to operate penstock
Rising stem or spindle – the stem rises through the lift or actuator and is bolted to the door. It does not rotate
Self contained – the penstock is shipped to site with a complete frame and does not require assembly
Stem guide – ensures that the stem is supported at adequate intervals to prevent buckling. (usually L/r Top seal – is required over any opening or pipe in a wall but not required in channels
Wall mounted – penstock is bolted to the wall with 316ss and chemical anchors complete with backing nuts and the gap between the wall and penstock filled with non-shrink grout

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