500 Series Straight Flow Valves with Pressure Regulation

A straight flow valve has a patented open flow design. There are no 90 degree angles that the flow of water has to maneuver around. This allows for flow rates as far low as 1 GPH. The diaphragm inside does not cause hammering when closing like a typical valve.

515-050-P

1-1/2” Nylon Female Thread Inlet and Outlet
Flow Control
Pressure Regulation
Overall Height: 8”
Overall Width: 5 – 3/4”
Overall Length 8 – 1/4”

520-050-P

2” Nylon Female Thread Inlet and Outlet
Flow Control
Pressure Regulation
Overall Height: 8”
Overall Width: 5 – 3/4”
Overall Length 8 – 1/4”

Features

• Patented full open straight through flow design
• Extremely low pressure loss
• Low flow capability from 1 GPH
• Contamination resistant w/ internal control water filtration
• Internal manual bleed operation
• Manual bleed can be removed for “tamper proof” operation
• Heavy duty reinforced EPDM diaphragm
• 33% glass filled nylon construction
• Heavy duty brass threaded retainer nuts in body (6 bolt pattern)
• Heavy duty stainless steel bolts for bonnet assembly (6 bolt pattern)
• Heavy duty stainless steel flow control stem
• Hex plunger for sandy water conditions
• 1” available with flow or non flow control, threaded or socket (glass filled PVC body)
• Ideal for residential and commercial applications

Open Straight Flow Design

Electrical Specifications

  • 24 VAC standard
  • Inrush: 350 mA
  • Holding: 250 mA
  • Cycles: 50 Hz to 60 Hz

Operating Specifications

• 1” Flow: 1 GPH – 50 GPM
• 1 1/2” Flow: 1 – 110 GPM
• 2” Flow: 2 – 250 GPM
• 3” Flow: 5 GPM – 250 GPM
• Operating pressure: 15 to 200 PSI
• Recommended velocity not to exceed 5 feet per second of corresponding pipe size
• Downstream pressure adjustable from 15-150 PSI
• All valves for outdoor use only

Specific Pressure Regulation Features

• Utilizes Schrader valve for downstream pressure resisting
• Pressure regulator has “set and lock” feature for tamper resistant adjustment
• Pressure Regulating valve is actually a pressure modulating valve that provides a constant downstream even with changes in upstream pressure

Pressure Loss with 1″ Valve

Flow (GPM) Pressure Loss (PSI)
15 1.20
20 2.10
25 4.00
30 5.00
35 6.20
40 8.0
45 10

Pressure Loss with 1-1/2″ Valve

Flow (GPM) Pressure Loss (PSI)
40 2.00
45 2.20
60 2.60
80 3.00
100 4.00
150 8.00

Pressure Loss with 2″ Valve

Flow (GPM) Pressure Loss (PSI)
40 1.50
45 1.80
60 3.00
80 3.00
100 4.00
150 5.00
200 7.00

Pressure Loss with 3″ Valve

Flow (GPM) Pressure Loss (PSI)
45 1.80
60 3.00
80 3.00
100 4.00
150 5.00
200 7.00
250 10.00