A general purpose line regulator designed for low inlet pressure and low delivery pressure applications with non-corrosive gases.

Applications

• Control of constant fuel burner flame.
• Inert gas blanketing at low pressures.

Design Features

• Zinc body
• Rubber diaphragm
• Porous metal filter protects seat from contamination
• 1/4” NPTM inlet/outlet connection with loose hose barb
• Pressure adjusting screw protected by “security cap”

Materials of Construction

• Gauges: Brass
• Body: Cast zinc
• Bonnet: Die cast zinc
• Diaphragm: Natural rubber
• Seat: Natural rubber
• Seals: Natural rubber

Specifications

• Maximum Inlet Pressure: 250 psi (1,725 kPa)
• Typical Max Flow Rate (at 200 psi):
          Model 3701A: 5 SLPM-N2
          Model 3702: 50 SLPM-N2
          Model 3703: 65 SLPM-N2
• Flow Capacity (Cv): 0.8
• Operating Temperature: -40°F to 150°F (-40°C to 65°C)
• Flow Direction: Right to Left
• Porting (Regulator Body): 1/4” NPT Female
• Porting Configuration: 1 High, 1 Low
• Integral Relief Valve:
          Model 3701A: 17" wc to 3 psi above set point
          Model 3702: 6-9 psi
          Model 3703: None

Instructions

Instructions, Economy Regulator

3D Model

3701A3702/3703