Penstock Valves

Penstocks are normally fitted into or onto the civil structure formwork either in channels or over an aperture in a wall. The channels and apertures are sized to accept a range of flow situations and the penstocks are required to suit.

Product Overview

Penstocks are used on Waterways, Power plants, Industrial effluent plants, hydro power, Drainage and Flood control as well as being used in large numbers on water, waste water and sewage treatment plants.

Darcy supply and fit a range of penstock, gate and flap valves to secure spills on site preventing pollution passing through on site drainage systems.

Please see below an overview of the range of penstock valves available through Darcy. 

HDPE Penstocks

Our range of HDPE penstocks are significantly lighter than traditional penstocks manufactured from steel.  As HDPE is UV stabilised the material does not become brittle in direct sunlight.  Utilising only pure materails the product is also fully recyclable.  This type of penstock requires little lubrication between the frame and the door resulting in a longer life product.  

Features

This range can be specially designed to customers’ exact specification in terms of size and pressure.
Stocked standard sizes range from 150mm – 1000mm.
Standard size penstocks can cope with up to 6m on and off seating pressure. Penstocks can be made bespoke to withstand project specific pressure requirements.

Materials: HDPE (high density polyethylene) Stainless steel 304 or 316, sealing EPDM

Benefits

Darcy supply a range of flap valves and penstocks, in HDPE (High Density Polyethylene) that are:

Lightweight 
Available as wall, side wall or channel mounted
Easy and quick to install – no need for grout between frame and wall
Corrosion resistant
Made of a robust and rigid construction
UV stable
Fully recyclable
Leakage rates that are below both BS7775 and DIN 19569-4 class 5

Channel Mounted Penstocks

Our range of channel mounted penstocks cater for the most demanding specification and applications.

Features

Full frame with direct-on operating gear or open frame with remote operating gear
Designed to suit project specific size and pressure requirements
Pressure is equal to door depth
Stainless Steel Grade SS304, SS316, Super Duplex, Mild Steel with protective coatings
All penstocks are manufactured in accordance with BS7775

When choosing a Channel Mounted penstock consider:

The size of the gate required
The direction the flow is to be controlled
Will it force the door on to or away from its sealing face?
Will it be wall, channel, end wall, side wall or rebate mounted?
How will the penstock be operated?
Differential head in metres under static and opening/closing conditions?

Wall Mounted Penstocks

Our wall mounted penstocks are primarily installed for the flow control and isolation of fluids associated with water, sewage treatment plants, power generation irrigation schemes and process plants.

Features

Full frame with direct-on operating gear or open frame with remote operating gear
Designed to suit project specific requirements
Pressure up to 10m head of water, on and off seating
Stainless Steel Grade SS304, SS316, Super Duplex, Mild Steel with protective coatings

When choosing a Wall Mounted penstock consider:

The size of the gate required
The direction the flow is to be controlled
Will it force the door on to or away from its sealing face?
Will it be wall, channel, end wall, side wall or rebate mounted?
How will the penstock be operated?
Differential head in metres under static and opening/closing conditions?

Cast Iron Penstocks

Our cast iron penstocks are designed to suit a wide variety of operating duties and applications. The cast iron penstocks series is constructed from traditional materials designed to provide robust and reliable products for water and sewage applications.

Features

Penstocks available in all size ranges and can be made bespoke to suit project specific requirements
All sizes have bronze sealing faces.
Standard penstocks suit 6m on seating pressure, 3m off. However, they can be designed to suit project specific pressure requirement

Weir Penstocks

Weir Penstocks are commonly used in water and sewage plants for accurate regulation or measurement of flow. Operation of the weir penstock is opposite to that of a conventional penstock. The weir penstock door opens downwards. 

Features

The W5000 series of weir penstocks are available with both square and rectangular apertures and are designed to suit specific size and pressure requirements.
Pressure: Door depth only.
Materials: Frame and door can be manufactured in either stainless steel grades SS316 or SS304 or mild steel with protective coatings.

Varieties

  • Channel Mounted Penstocks
  • Wall Mounted Penstocks
  • Cast Iron Penstocks
  • Weir Penstocks
  • HDPE Penstocks

Get In Touch With Darcy

Contact us today to get expert help from one of our environmental experts.


Complete the form or call us on 0800 0370 899
alternatively email us directly at sales@darcy.co.uk

We look forward to helping you!