HomeProductsValves & HydrantsGate ValvesGate Valve – Resilient Seat Polyethylene Restraint PN16

Gate Valve – Resilient Seat Polyethylene Restraint PN16

Gate Valve – Resilient Seat Polyethylene Restraint PN16

Clover Resilient Seat Polyethylene Restraint Gate Valves PN16 provide restraint socket end connections for polyethylene pipes and are suitable for use in pressure and non-pressure water supply and sewerage applications.

Gate valves are used to isolate flow within pipeline sections, pipeline equipment and offtakes. Clover Resilient Seat Gate Valves are manufactured to comply with AS/NZS2638.2.

  • No requirement for polyethylene welding during installation

  • Fast installation under all weather conditions

  • Confidence of the highest quality valves, backed by a 10-year manufacturer’s warranty

Techincal Information

Usage & Features

Applications

Clover resilient seat polyethylene restraint gate valves are suitable for use in pressure and non-pressure water supply and sewerage applications.

Gate valves are used to isolate flow within pipeline sections, pipeline equipment and offtakes.

Typical applications include;

  • Potable and recycled water supply
  • Irrigation and raw water
  • Gravity and sewer rising mains
  • Fire systems
  • Stormwater and drainage
  • Buried and above ground

Gate valves should not be used for the purposes of throttling or adjusting flow.

Features and Benefits

Features Benefits
Fully restrained socket end connection for polyethylene pipe Reduces/removes the need for traditional thrust restraint.
Fast and simple installation No requirement for polyethylene welding, reducing installation time and cost. Valves can be simply installed under all-weather conditions.
10-year manufacturers’ warranty Confidence of the highest quality valves, backed by a 10-year manufacturer’s warranty.
Factory tested Each gate valve undergoes hydrostatic pressure and operating torque testing
Reduced weight design Safer and easier installation
Mechanical joint design Removes the need for traditional polyethylene jointing methods of stub/maxi flanges or shouldered couplings.
Full bore design Eliminates debris build up
Local inventory available Fast and flexible supply to meet project demands
Manufactured to comply with AS/NZS2638.2 Guaranteed quality products
Thermally bonded polymeric coating Long-term corrosion resistance and performance
Accreditations

Compliance

  • WSA PS 281 “Gate Valves, Resilient Seated with Restrained Flexible Joints for Polyethylene Pipe in Pressure Applications – Drinking Water, Non-Drinking Water Supply and Sewerage”
  • AS/NZS2638.2 “Gate valves for waterworks purposes – Resilient seated”
  • AS/NZS4158 “Thermal-bonded polymeric coatings on valves and fittings for water industry purposes”
  • AS1646 “Elastomeric seals for waterworks purposes”
  • AS1831 “Ductile cast iron”
  • EN12842 “Ductile iron fittings for PVC-U or PE piping systems. Requirements and test methods”
  • AS/NZS4130 “Polyethylene (PE) pipes for pressure applications”
  • AS/NZS4020 “Testing of products for use in contact with drinking water”
  • ISO5211 “Industrial Valves – Part-turn actuator attachments”

WSAA Product Appraisal

Clover resilient seat polyethylene restraint gate valves are independently appraised and recommended by the Water Services Association of Australia (WSAA);

  • Product Appraisal 11/21

WSAA Purchase Specification

Clover resilient seat polyethylene restraint gate valves comply with the requirements of the following Water Services Association of Australia (WSAA) purchase specification(s);

  • WSA PS281 – Gate Valves, Resilient Seated with Restrained Flexible Joints for Polyethylene Pipe in Pressure Applications – Drinking Water Supply and Sewerage

Suitability for Use with Potable Water (AS/NZS4020 Compliance)

Clover resilient seat polyethylene restraint gate valves are suitable for potable water applications and comply with the requirements of AS/NZS4020 “Testing of products for use in contact with drinking water”.

Product Details

Diameter Range

Clover resilient seat polyethylene restraint gate valves are manufactured with nominal diameters ranging from DN90 to DN315.

For gate valves with alternative diameters please contact Clover for additional technical and pricing information.

Pressure

Clover resilient seat polyethylene restraint gate valves are manufactured with a standard nominal pressure range of PN16 (1,600kPa).

Coating

Clover resilient seat polyethylene restraint valves are manufactured with a thermally bonded polymeric coating using a fluidised bed process in accordance with the requirements of AS/NZS4158 “Thermal-bonded polymeric coatings on valves and fittings for water industry purposes”.

Specifications Sym Units DN90 DN125 DN180 DN250 DN280 DN315
Length (Face to Face) L mm 245 260 355 420 450 460
Height (Centre to Keycap) H mm 290 340 450 644 644 684
Socket Depth S mm 88 88 118 146 156 165
Weight of Unit (Keycap Fitted) Kg 13 19 33 96 104 132
Turns to Close (approx) Turns 17 21 32 42 42 51
Actual Torque to Seal (approx) Nm 55 60 110 200 200 250
Maximum Operating Torque MOT Nm 75 100 150 250 250 300
ISO5211 Top Mounting Flange F10 F10 F10 F14 F14 F14
Product Code (Anti-Clockwise Close) VGGG090 VGGG125 VGGG180 VGGG250 VGGG280 VGGG315
Product Code (Clockwise Close) VGGG090C VGGG125C VGGG180C VGGG250C VGGG280C VGGG315C

End Connections

Clover resilient seat polyethylene restraint gate valves are manufactured with restrained flexible joint connections in accordance with EN12842 “Ductile iron fittings for PVC-U or PE piping systems – Requirements and test methods”.

The polyethylene restrained flexible joints incorporate an elastomeric seal and copper alloy tensile restraint ring (optional 316 stainless steel is also available). Sealing and joint anchoring is achieved by bolting a ductile iron gland ring onto the body of the valve.

Flexible joint seals are manufactured as EPDM complying with AS1646 “Elastomeric seals for waterworks purposes”.

Pipe stiffener inserts are recommended for PE100 pipes ≥ SDR 17, i.e. PN10 or less.

Pressure

Nominal Pressure (PN) Allowable Operating Pressure (AOP) Maximum Allowable Operating Pressure (MAOP) Allowable Site Test Pressure (ASTP) Production Test – Body Production Test – Seat
16 1,600 kPa 1,920 kPa 2,000 kPa 2,400 kPa 1,760 kPa

Maximum Operating Temperature

40°

Options & Accessories

Clover resilient seat polyethylene restraint gate valves have a range of options and accessories available including:

  • Anti-clockwise and clockwise closing models available
  • Handwheel
  • Gearbox Operator (Spur & Bevel)
  • ISO5211 Top Mounting Flange
  • Lilac coloured key-cap available for recycled water applications
  • 316 Stainless steel tensile restraint ring

Contact Clover for further information.

Properties

Mechanical Properties – Ductile Iron

Property Value & Unit
Ultimate tensile strength (Minimum) 500MPa
Elongation (Minimum) 7%
Density (Specific Gravity) 7.1

Mechanical Properties - Coating

Property Value & Unit
Internal Surface (in contact with drinking water) 350 Microns
External Surface 300 Microns
Design & Install

Installation Training

Clover’s in-house engineering team provides a range of training, accreditation and technical support services.

The Clover Academy installation training course provides installers with important information relating to the correct handling, installation, testing, maintenance and repair of Clover pipe systems and products.

Contact the Clover engineering team to discuss scheduling a training program.

Technical Support

Clover’s in-house engineering team combines specialist technical knowledge, creative thinking and on-the-job experience, to offer our clients a range of project planning and consultation services.

From recommendations on product innovations, to crafting complex end-to-end solutions, our collaborative approach bridges the gap between contractors, authorities and suppliers. The only Australian provider able to offer clients the full product suite, Clover offers unbiased, strategic insights that always consider the bigger picture.

From initial planning, to onsite training and technical assistance, we offer input across every stage of your project’s timeline. Our contribution continues beyond the project design, and we remain accessible for ongoing changes and developments over the course of each project.

We work with contractors, asset managers, local councils and government, developers and other pipeline professionals to specify bespoke product solutions. By engaging our team of engineers, you gain access to unparalleled product knowledge and expertise.

Recommended Specifications

  • Gate valves shall be Clover resilient seated non-rising spindle type with polyethylene (PE) restraint joint end connections conforming to WSA PS 281
  • Gate valves shall close in an anti-clockwise / clockwise direction
  • Gate valves shall be fitted with a keycap / handwheel
  • Gate valve allowable operating pressure shall be 1,600kPa
  • Protective coatings of gate valves shall be thermally applied polymeric type in accordance with AS/NZS4158
  • Polyethylene restrained joints shall be fitted with a Grade C37710 Copper Alloy Tensile Restraint Ring / 316 Stainless Steel Tensile Restraint Ring
Resources

Technical Documents

Resilient Seat Polyethylene Restraint PN16 – Technical Data Sheet

PDF, 256.0K

Gate Valve – WSAA Appraisal

PDF, 1.9M