Series 300 – Modular Relief Valves

Combine any two end fittings.

Series 30 - Modular End
May use the same configuration
on both ends.

With its flexible design, the popular Series 300 modular relief valves allows you to mix and match end fitting configurations – i.e. NPT with barbed style – to meet the widest range of possibilities. For pump applications, Model #315 (foot/filtering valve) is easily mated with any Series 300 end fitting.

Smart Products modular relief valve options include:

      • Barbed, NPT, and foot valve styles
      • Wide range of plastic, o-ring, and spring materials
      • Choice of precision opening pressures

Refer to the Relief Valves Materials Selection Chart Materials Selection Chart for standard spring rates and materials. Other spring opening pressures and materials available by special order.

#300
Series 300 Check Valves
#301
Series 301 Check Valves
#302
Series 302 Check Valves
#303
Series 303 Check Valves
#304
Series 304 Check Valves
#305
Series 305 Check Valves
#306
Series 306 Check Valves
#308
Series 308 Check Valves
#314
Series 314 Check Valves
#312
Series 312 Check Valves
#315
Series FV Foot Valve Check Valves
 
Barbed
Model # Fits Tubing I.D.  
300 1/16" 1.58mm
301 3/32" 1.38mm
302 1/8" 3.18mm
303 3/16" 4.76mm
304 1/4" 6.35mm
305 5/16" 7.94mm
306 3/8" 9.35mm
308 1/2" 12.70mm
Male NPT
Model # NPT Size
314 1/8" NPT
312 1/4" NPT
Foot Valve
#315* Foot Valve
*Use with any model 300 end fitting

View Relief Valves Materials Selection Chart Materials Selection Chart

Materials recommendations are based on standard corrosion resistant and compatibility guides. In a continuing pledge to provide customers with quality products, Smart Products requires that products are customer-tested and approved for each application-specific use.

For expert technical assistance or to order CALL NOW!

(800) 338-0404

Check Valves

Series 100 - Cartridge

Series 200 - NPT

Series 300 - Modular

Series 500 - Miniature

Pressure Relief Valves

Series 100 - Relief Valve

Series 200 - Relief Valve

Series 300 - Relief Valve

Series 500 - Relief Valve

Control Valves

Push Button Manual Relief

Bleed Valve

Check Valves Resources

How to Order

Relief Valves Materials Selection Chart Materials Selection Chart

Valve Overview Valve Overview

Check Valves Flow vs Pressure Studies Flow vs Pressure Studies

Key Features:
  • Our most popular model provides maximum versatility with the widest range of options.
  • Used for liquid or air.
  • Eliminates leak prone adapter by combining fitting and check valve in one.
  • Flexible modular design incorporates check valve cartridge model 150 or 160 with a combination of any two 300 series end fittings to meet specific design requirements; may use the same configuration on both ends.
  • Build your own custom check valve by mixing and matching our standard components and materials.