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Use this bushing to convert 1 1/4" FP thread to 1" FP thread on High flow regulators

Pressure Regulators

It's all about the pressure! And drip irrigation requires low pressure--lower than most home faucets or hydrants provide. That's why we feature the pressure regulators on this page--a critical part for most drip irrigation systems. A simple pressure gauge (found on "Tools" page) will measure your water pressure. 

Pressure regulators are used to reduce  incoming water pressure that is too high for drip emitters and fittings. Some city water districts or rural areas supply water at very high pressure. Homeowner pumps also can deliver water at excessively high pressure. The regulator must be sized to match the flow of the drip system. To help you figure out which pressure regulator you should use, we have included optimal or maximum pressure ratings for the emitters and sprinklers we offer.

While most emitter tubing and emitters for drip systems operate well with regulators rated at from  10-30 PSI systems with mini-sprinklers and misters operate best in the 20-40 PSI range; and Tape systems should operate within the  8-15 PSI range.)

 Regulators should be situated after valves or timers because they can be damaged by constant pressure. They are available with hose or pipe threads and male or female inlets and outlets. So when you're chosing a regulator and a filter, make sure the connection are compatible. Adapters for differing threads can be found on "adaptors" page ( listed under ACCESSORIES).

  • FPT=Female Pipe Threads, MPT=Male Pipe Threads, FHT=Female Hose Threads, MHT=Male Hose Threads

LOW FLOW REGULATORS

Flow range is 6-480 GPH.
Inlets and outlets are 3/4"
Maximum inlet pressure 150 PSI 
    Models 822 thru 824 below:
    Female Hose Thread Inlet x Male Hose Thread Outlet
     for use with In-line filters or hose threaded "Y" filters 
      Low Flow Hose Threaded Regulator

      Low Flow Hose Threaded Regulator

      12 PSI (SKU: 822-PRSLHH12)
      20 PSI (SKU: 823-PRSLHH20)
      30 PSI (SKU: 824-PRSLHH30)
      Model 826 below:
       Female Pipe Thread Inlet* x Male Hose Thread Outlet 
      for use with valves or pipe thread filters. 
        *Can be adapted to hose threads by using ADAPTOR part #704-AFHMP on the inlet side.
        12 PSI (SKU: 826-PRSLPH12)
        Models 820, 831 & 832 below:
        Female Pipe Thread x Female Pipe Thread 
        for use with "Y" filters:
          Low Flow Pipe Threaded  Regulator

          Low Flow Pipe Threaded Regulator

          12 PSI (SKU: 830-PR12)
          20 PSI (SKU: 831-PR20)
          30 PSI (SKU: 832-PR30)

          MEDIUM FLOW REGULATORS

            Flow range is 120-1200 GPH 
            Inlets and outlets are 3/4"

                Models 833-836 below:

              Female Pipe Thread x Female Pipe Thread
                Medium Flow Pipe Threaded Regulator

                Medium Flow Pipe Threaded Regulator

                MEDIUM FLOW REGULATOR
                12 PSI (SKU: 833-PRSMPP12)
                20 PSI (SKU: 834-PRSMPP20)
                30 PSI (SKU: 835-PRSMPP30)
                40 PSI (SKU: 836-PRSMPP40)
                Models 837 & 839 below:
                Female Pipe Thread x Male Hose Thread
                  12 PSI (SKU: 837-PRSMPH12)
                  30 PSI (SKU: 839-PRSMPH30)

                  LAWN & GARDEN LOW VOLUME REGULATORS

                  An ideal regulator for low volume systems connected to outdoor faucets.
                  Maximum inlet pressure 120 PSI
                  Flow range 6-420 GPH
                  Female Hose Thread inlet x Male Hose Thread outlet 
                  Use with Tee filters, Inline filters or Hose Threaded Y filters. 
                  Lawn & Garden Low Flow Regulators

                  Lawn & Garden Low Flow Regulators

                  PRSG10, PRSG30
                  10 PSI (SKU: 801-PRSG10)
                  20 PSI (SKU: 802-PRSG20)
                  30 PSI (SKU: 803-PRSG30)
                  40 PSI (SKU: 804-PRSG40)
                  10 PSI Regulator

                  10 PSI Regulator

                  10 PSI Regulator
                  Click to enlarge image(s)
                  A low cost regulator for systems with a flow rate of between 60 and 900 Gallons Per hour. If your flow rate is less than 60 gph, use the Senneger Lawn & Garden Regulator PRSG10.
                  Inlet FHT, Outlet MHT
                  15 PSI

                  15 PSI

                  15 PSI
                  Click to enlarge image(s)
                  A low priced Medium Flow ( 60-900 GPH) 15 PSI regulator. Best used with non-pressure compensating systems. Only use with Drip Tape if flow rate on your system is between 360- 900 GPH--otherwise use the Senninger Lawn & Garden regulators (PRSG..)or their low flow regulators (PRSL...)
                  Inlet FHT, Outlet MHT
                  Low cost 30 PSI regulator

                  Low cost 30 PSI regulator

                  STATIC REGULATOR 805-PROH10
                  STATIC REGULATOR
                  A low cost regulator that works like a limit valve. 
                  100 PSI Maximum inlet pressure
                  30--420 GPH Flow range
                  Female Hose thread x Male Hose thread
                  Can be used with Tee Filter, Inline Filter or Hose threaded "Y" Filters.
                  THIS REGULATOR CAN BE USED BEFORE TIMERS AND VALVES
                  10 PSI (SKU: 805-PROH10)
                  25 PSI (SKU: 806-PROH25)

                  LIMIT VALVES

                  Designed to be used BEFORE timers and valves
                  (That is, it can be used under constant pressure)
                  Wide flow range of 30-900 GPH
                  Maximum inlet pressure 125 PSI
                  10 PSI (SKU: 807-PRLV10)
                  30 PSI (SKU: 808-PRLV30)
                  40 PSI (SKU: 809-PRLV40)
                  1" LIMIT VALVES
                   
                   
                  1" MEDIUM FLOW REGULATORS
                  Flow range 120--1200 GPH
                  1" Female Pipe Thread Inlet x 1" Female Pipe Thread Outlet
                  Maximum inlet pressures:
                  Model 811 @ 135 PSI
                  Models 812, 813 @ 150 PSI
                  12 PSI (SKU: 811-PR1S12)
                  25 PSI (SKU: 812-PR1S25)
                  40 PSI (SKU: 813-PR1S40)
                   
                  HIGH FLOW REGULATORS
                  Flow range 600--1920 GPH 
                  1 1/4" Female Pipe Thread Inlet* x 1" Female Pipe Thread outlet
                  Maximum inlet pressures:
                  Model 814 @ 60 PSI
                  Model 815 @ 100 PSI
                  *to convert 1 1/4" FP to 1" FP use Bushing (sku 736) on this page