Nylon and PVC Valves

Manual Nylon Valve

Nylon and PVC Valves offer structural simplicity and superior hydraulic performance for surface or subsurface agricultural applications. The valves operate by pipeline or external pressure and the reinforced rubber diaphragm seals the water passage when the line pressure reaches the valve's control chamber. They are simple to install with slip or threaded connections and available in 1" to 6" sizes. Netafim offers 3-Way Control Nylon and PVC Valves and two models of 2-Way Control Nylon Valves. The PBI 2-Way Electric Control Valve is standard with a throttling handle, has a built-in solenoid and large internal water passage with no moving parts to prevent clogging. The Series 80 2-Way Electric Control Valve is suitable for high pressure applications, has quick reaction to opening and closing and has a flow control stem.

3-Way Control Valves

Features & Benefits

  • Superb hydraulic performance.
  • Simple design with only one moving component, the diaphragm, means parts are not located in the water passage way.
  • Low operating pressure.
  • Simple inline installation with minimal maintenance requirements for maximum dependability.
  • Durable, corrosion-resistant materials provide high resistance to corrosive water containing fertilizer and chemicals.
  • Nylon valves have threaded connections.
  • PVC valves have threaded or socket (slip) connections allowing pipes to be cemented into the valves.

Applications

  • Headworks assemblies for use in advanced treatment wastewater drip dispersal systems
  • Ideal for water control in all piping networks
  • Above or below grade installations
  • Remote control irrigation for master valves and automated or manual operations
  • Nylon valves are ideal for mild corrosive and acidity levels in the water
  • PVC Valves are ideal for higher corrosive and acidity levels in the water

2-Way (PBI) Control Valves

Features & Benefits

  • Durable, glass reinforced nylon construction provides superb hydraulic performance.
  • Large internal water passage with no moving parts in the flow path prevents clogging.
  • Built-in 2-Way Solenoid with low power requirement for ease of operation and reliability
  • Simple installation either vertically or horizontally.
  • High resistance to corrosive water containing fertilizer and chemicals.
  • Standard with a flow control (throttling) handle.

Applications

  • Ideal for mild corrosive and mild acidity levels in the water

2-Way (Series 80) Control Valves

Features & Benefits

  • Suitable for high pressure applications with quick reaction to opening and closing.
  • Exceptionally low inrush and holding current allows the longest wire run from valve to controller.
  • Quick reaction to opening and closing and a drip-tight seal for accurate irrigation.
  • Stable solenoid to voltage fluctuations with low sensitivity to dirt - no diode solenoid.
  • Integrated check valve ensures valve remains closed until the controller designates opening.
  • Flow control stem allows manual control from full closure up to maximum capacity.

Applications

  • Ideal for mild corrosive and mild acidity levels in the water


Manual Nylon Valve

Nylon And PVC Valves Operation

Manual Valve Operation With A 3-Way Selector

  • CLOSED (C): Upstream pressure or pressure from an external source is applied to the control chamber. Initiated by the spring, the diaphragm is pressed down to close the valve drip-tight.
  • OPEN (O): Relieving the water or air pressure to the atmosphere from the control chamber causes the valve to open.
  • AUTOMATIC (A): The automatic port of the 3-Way selector is connected to a solenoid, hydralic relay or pilot which controls the valve. The common port of the 3-Way selector connects the control chamber to either A, O or C, depending on the direction the selector is pointed.

3-Way Control Valves

The 3-Way control valve only ports water (or air) into the control chamber to close the valve or releases it from the control chamber to open the valve. This non-continuous porting technique allows for full opening of the main valve when operating conditions require the valve to be fully open.

2-Way Control Valves

The 2-Way control valve continuously ports water into and from the control chamber, making it an excellent choice when a very accurate and sensitive regulation performance is required. The 2-Way valves may be used with clean water when a minimal pressure difference is allowed and a fast, accurate response is required.


Manual Nylon Valve

Nylon and PVC Valves Technical

3-Way Control Valves

Specifications

  • Recommended Operating Pressure (psi):
    Nylon - 12 minimum to 145 maximum
    PVC - 12 minimum to 115 maximum (based on valve size - see chart)
  • Maximum Water Temperature 140° F
  • Optional Functions:
    Manual, Electric, Pressure Reducing, Pressure Sustaining

Materials

  • Nylon Valve Body, Bonnet, Seat:
    Glass Reinforced Polyamide (GRP)
  • PVC Valve Body: uPVC
  • Spring: Stainless Steel (AISI 302)
  • Nuts, Bolts, Washers:
    Zinc Coated Steel (BS 5216)
  • Diaphragm: Natural Rubber
  • Connections:
    Threaded - ANSI (NPT Female)
    Socket - IPS, PVC Standard



2-Way (PBI) Control Valves

Specifications

  • Available Sizes: 1", 1 1/2", 2", and 323
  • Maximum Working Pressure:
    1" - 115 psi and 2" to 323 - 150 psi
  • Maximum Water Temperature: 140° F
  • Connections: Female Threaded NPT
  • Electrical Specifications:
    Voltage - Standard 24 VAC, 60 Hz
    Inrush Current - 29mA
    Holding Current - 14mA
    Allowable Voltage Variation: 10%

Materials

  • Body and Bonnet: Glass Reinforced Nylon
  • Spring: Stainless Steel (AISI 302)
  • Nuts, Bolts, Washers: Stainless Steel (304)
  • Diaphragm: Natural Rubber


2-Way (Series 80) Control Valves

Specifications

  • Recommended Flow Ranges:
    3/4" valve - .01 to 26 GPM
    1" valve - .01 to 44 GPM
    1 1/2" valve - .25 to 110 GPM
    2" valve - .25 to 176 GPM
  • Valve Configurations:
    3/4" & 1" valves - Globe
    1 1/2" & 2" valves - Globe or Angle
  • Minimum Operating Pressure: 7 psi
  • Maximum Operating Pressure: 150 psi
  • Maximum Water Temperature: 140°
  • Standard Solenoid Voltage:
    24VAC ± 10% voltage
  • Solenoid Inrush Current: .22A
  • Solenoid Holding Current: .095A

Materials

  • Body, Bonnet, Diaphragm Seat:
    Glass Reinforced Polyamide (GRP)
  • Nuts, Bolts, Washers: Stainless Steel 304
  • Spring: Staniless Steel AISI 302


Valve Installations Tips

  • THREADED VALVES: Use a few layers of Teflon sealer compound on the adapter and tighten by hand. Use a wrench to tighten the adapter another half revolution.
  • SOCKET OR 'SLIP' VALVE WITH PVC PIPE: Use the same procedure as when cementing PVC pipes. Mark the pipe first, then apply glue to the socket of the valve and the PVC pipe. Insert the pipe until reaching the mark and rotate a quarter turn. Hold the joint in place until the cement hardens.
  • INSTALLATION ABOVE GROUND: When installing a manifold above ground, the length of the manifold should be kept as short as possible (this eliminates the need for additional support). For longer lengths, a firm support under the horizontal pipes is recommended. Always install the valve with the bonnet exposed to the sun.
Manual Nylon Valve

Nylon And PVC Valves Ordering