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Fire Hydrant Flow Testing
2-1/2" NH - NST Hydrant Swivel Pitot Flowtest Diffuser

This light weigjht Hydrant Swivel Diffuser & Flow Tester has a dual read PSI/GPM Gauge and a replaceable pressure tube assembly and a ball-bearing Polished Brass swivel hydrant adapter. Used to perform flow tests on hydrants and diffuse stream at the same time.

SG-P67251-60 Swivel Diffuser 2-1/2" NST with 4" Dial 60Psi/1300GPM Dual-read Liquid Filled Gauge $469.49
SG-P67251-100 Swivel Diffuser 2-1/2" NST with 4" Dial 100Psi/1680GPM Dual-read Liquid Filled Gauge $469.49
SG-P67251-160 Swivel Diffuser 2-1/2" NST with 4" Dial 160Psi/2120GPM Dual-read Liquid Filled Gauge $469.49

SG-P67501R -1/4" x 25ft Quick Connect Remote read assembly with Bleeder $39.95
SG-Test -NIST Certification and Testing of Gauge orered with Diffuser $39.95
SG-P67251FLUSH -Swivel Diffuser with Brass Plug (Flushing only-No Gauge) $348.95


HGV250 NH: 2-1/2" Brass Hydrant Swivel Gate Valve with Red Speed Handle - $199.50.
HGV250 NH-PB: 2-1/2" Brass Hydrant Swivel Gate Valve Red Body Polished Brass Trim with Red Speed Handle - $259.50.


SG-P675 - 2½" Hydrant Swivel Diffuser Carrying Case with keys $82.49


Hydrant Swivel Diffuser & Flow Tester in action

2-1/2" NH - NST Hydrant Swivel Thrust Buster Street T Pitot Flowtest Diffuser

This 2-1/2" NST heavy duty Fabricated (Yellow) Swivel T Diffuser is used to Flowtest and reduce the force of flowing water from fire hydrants or hose lines to control erosion and direct the flow pattern safely. It is recommended for all field-testing or water main flushing operations in which unsecured hoses are used to direct water flow.

It also has a replaceable pressure Pitot tube assembly with a quick connect Gauge assembly and a ball-bearing swivel hydrant adapter used to perform flow tests on hydrants and diffuse stream.

SG-P6725T-60S Thrust Buster Street T Swivel Hydrant Piezo Diffuser Straight 2½" NST with 4" Dial 60Psi/1300GPM Dual-read Liquid Filled Gauge $599.99
SG-P6725T-100S Thrust Buster Street T Swivel Hydrant Piezo Diffuser Straight 2½" NST with 4" Dial 100Psi/1680GPM Dual-read Liquid Filled Gauge $599.99
SG-P6725T-160S Thrust Buster Street T Swivel Hydrant Piezo Diffuser Straight 2½" NST with 4" Dial 160Psi/2120GPM Dual-read Liquid Filled l Gauge $599.99


SG-P6725T-60B Thrust Buster Street T Swivel Hydrant Piezo Diffuser 30° up-bend 2½" NST with 4" Dial 60Psi/1300GPM Dual-read Liquid Filled Gauge $649.99
SG-P6725T-100B Thrust Buster Street T Swivel Hydrant Piezo Diffuser 30° up-bend 2½" NST with 4" Dial 100Psi/1680GPM Dual-read Liquid Filled Gauge $649.99
SG-P6725T-160B Thrust Buster Swivel Street T Hydrant Piezo Diffuser 30° up-bend 2½" NST with 4" Dial 160Psi/2120GPM Dual-read Liquid Filled l Gauge $649.99

SG-P67501R -1/4" x 25 ft Quick Connect Remote read assembly with Bleeder $39.95
SG-Test -NIST Certification and Testing of Gauge ordered with Diffuser $39.95
HS-HOSE2.5X10 - 2-1/2" NST x 10' Double Jacket Hose 800Psi Test- Yellow $89.95
HS-HOSE2.5X50 - 2-1/2" NST x 50' Double Jacket Hose 800Psi Test- Yellow $229.95


SG-P6725TFLUSH-S - Thrust Buster Swivel Street T Diffuser Straight with Plug (Flushing only-No Gauge) $429.50
SG-P6725TFLUSH-B - Thrust Buster Swivel Street T Diffuser 30°up-bend with Plug (Flushing only-No Gauge) $459.50



2-1/2" NST Straight T Swivel Hydrant Flow test Diffuser

2-1/2" NST 30^ T Swivel Hydrant Flowtest Diffuser

2-1/2" NST x 50ft 800Psi Test Yellow Fire Hose

NNI 4" and 4-1/2" NST Hydrant Swivel Thrust Buster Street T Pitot Flowtest Diffuser

This 4" or 4.5" NST heavy duty Fabricated (Yellow) Swivel T Diffuser is used to Flowtest as well as reduce the force of flowing water from fire hydrants or hose lines to control erosion and direct the flow pattern safely. It is recommended for all field-testing or water main flushing operations in which unsecured hoses are used to direct water flow. It can be connected with a Fire Hydrant with a 4" or 4.5" NST

It includes a replaceable pressure Pitot tube assembly with a quick connect 4" Dial Gauge assembly with Pressure Snubber and a ball-bearing swivel hydrant adapter used to perform flow tests on hydrants and diffuse stream.

SG-P6740T-60 4" NST Thrust Buster Street T Swivel Hydrant Pitot Flowtet Diffuser with 4" Dial 60Psi Liquid Filled Gauge $1149.99
SG-P6740T-100 4" NST Thrust Buster Street T Swivel Hydrant Pitot Flowtet Diffuser with 4" Dial 100Psi Liquid Filled Gauge $1149.99
SG-P6740T-160 4" NST Thrust Buster Street T Swivel Hydrant Pitot Diffuser with 4" Dial 160Psi Liquid Filled Gauge $1149.99

SG-P6745T-60 4" NST Thrust Buster Street T Swivel Hydrant Pitot Flowtet Diffuser with 4" Dial 60Psi Liquid Filled Gauge $1164.99
SG-P6745T-100 4" NST Thrust Buster Street T Swivel Hydrant Pitot Flowtet Diffuser with 4" Dial 100Psi Liquid Filled Gauge $1164.99
SG-P6745T-160 4-1/2" NST Thrust Buster Street T Swivel Hydrant Pitot Diffuser with 4" Dial 160Psi Liquid Filled Gauge $1164.99

SG-P67501R -1/4" x 25 ft Quick Connect Remote read assembly with Bleeder $39.95
SG-Test -NIST Certification and Testing of Gauge ordered with Diffuser $39.95
HS-HOSE4X10 - 4" NST Aluminum Rocker Lug Couplings Male x Female x 10' Hose Yellow, 500 Psi Test $269.95
HS-HOSE4.5X10 4-1/2" NST Aluminum Rocker Lug Couplings Male x Female Hose 5" x 10' Hose Yellow, 400 Psi Test $299.95


SG-P6740TFLUSH - 4" NST Thrust Buster Swivel Street T Diffuser with Plug (Flushing only-No Gauge) $975.50
SG-P6745TFLUSH - 4.5" NST Thrust Buster Swivel Street T Diffuser with Plug (Flushing only-No Gauge) $975.50



4" NST Swivel Hydrant Flowtest T Diffuser


4" NST x 10ft 500Psi Test Yellow Fire Hose

NNI In-line Swivel Hydrant Flow Quick connect Test Piezo/Pitot Gauge (Polished Brass Finish)
To perform flow tests on hydrants and diffuse stream replacing hand held Pitot.
  • 2-1/2" Female NST/NH swivel connection x Male NST/NH hose thread smooth boreTube Polished Finish Brass Body with Pitot assembly for an accurate reading
  • Quick disconnect Pitot assembly with 3 way Brass Bleeder valve.
  • 4" Dial Dual Read PSi- GPM Liquid Filled Gauge is standard (Comes with Rubber Boot for Gauge Protection)
  • Comes in a 11.5" x 7" x 5" Case constructed from heavy gauge polypropylene for dent-proof, rust-proof storage.

SG-P9444-060 2½" NST Hydrant Flow Test Gauge 60Psi/1300GPM $349.99
SG-P9444-100
2½" NST Hydrant Flow Test Gauge 100Psi/1680GPM
$349.99
SG-P9444-160
2½" NST Hydrant Flow Test Gauge 160Psi/2120GPM
$349.99

NNI In-line Swivel Hydrant Flow Quick connect Test Piezo/Pitot Tube Gauge (Polished Chrome Finish)
To perform flow tests on hydrants and diffuse stream replacing hand held Pitot.
  • 2-1/2" Female NST/NH swivel connection x Male NST/NH hose thread smooth boreTube Polished Chrome Body with Pitot Tube assembly for an accurate reading
  • Quick disconnect Pitot Tube assembly with an in build Bleeder valve.
  • 4" Dial Dual Read PSi- GPM Liquid Filled Gauge is standard (Comes with Rubber Boot for Protection)
  • Comes in a 11.5" x 7" x 5" Poly Case constructed from heavy gauge polypropylene for dent-proof, rust-proof storage.

SG-P9445-060 2½" NST Hydrant Flow Test Gauge 60Psi/1300GPM $399.99
SG-P9445-100
2½" NST Hydrant Flow Test Gauge 100Psi/1680GPM
$399.99
SG-P9445-160
2½" NST Hydrant Flow Test Gauge 160Psi/2120GPM
$399.99

In-line Swivel Hydrant Flow Quick connect Test Piezo/Pitot Gauge with Gate Valve
SG-P9445V-60R 2½" NST Hydrant Flow Test Gauge 60Psi/1300GPM with Brass Gate Valve $525.99
SG-P9445V-100R 2½" NST Hydrant Flow Test Gauge 100Psi/1680GPM with Brass Gate Valve $525.99
SG-P9445V-160R 2½" NST Hydrant Flow Test Gauge 160Psi/2120GPM with Brass Gate Valve $525.99

SG-P9445V-60 2½" NST Hydrant Flow Test Gauge 60Psi/1300GPM with Polished Brass Gate Valve $559.99
SG-P9445V-100
2½" NST Hydrant Flow Test Gauge 100Psi/1680GPM with Polished Brass Gate Valve $559.99
SG-P9445V-160 2½" NST Hydrant Flow Test Gauge 160Psi/2120GPM with Polished Brass Gate Valve $559.99

2-1/2" Brass Hydrant Swivel Gate Valves
Straight Pattern with non-rising stem and swivel inlet. Female Swivel NST x Male NST with Red speed handle and pin lug swivel

HGV250 NH: 2-1/2" Brass Hydrant Swivel Gate Valve with Red Speed Handle - $169.50.
HGV250 NH-PB: 2-1/2" Brass Hydrant Swivel Gate Valve Red Body Polished Brass Trim with Red Speed Handle - $249.50.
HGV250 NH-PC: 2-1/2" Brass Hydrant Swivel Gate Valve Red Body Polished Chrome Trim with Red Speed Handle - $309.50

HGV250 NH

HGV250 NH-PB

HGV250 NH-PC

2½" NST Flow Test Gauge 160Psi/2120GPM with Brass Gate Valve: SG-P9445V-160R

2½" NST Flow Test Gauge 100Psi/1680GPM with Polshed Brass Brass Gate Valve: SG-P9445V-100
2-1/2" NST Hydrant Flow Diffuser Test Kit
Hydrant Flow Test Kits include a 2-1/2" NST/NH Swivel barrel with Pitot tube properly positioned in the waterway, 4" gauge and Water Diffuser Assembly. With it's 30* Swivel, the flow can be diverted. Gauge swivels 360* for easy reading and is removable for remote location mounting.
  • A 4" dial liquid filled Dual Read Gauge is standard.
  • 60 and 100Psi Gauge face is marked in large 2.5 PSI increments.and 160 Psi with 5Psi increments.
  • Gauge swivels 360 for easy reading and is removable for remote location mounting.
  • Hydrant debris, etc. are retained in the Diffuser Assembly.
  • The 2-1/2" barrel easily measures flow & is adaptable with hose for flushing.

SG-P25HPK2-60 Hydrant Flow Test Diffuser Kit with 4" Dial 60Psi/1300GPM Dual-read Liquid Filled Gauge
SG-P25HPK2-100 Hydrant Flow Test Diffuser Kit with 4" Dial 100Psi/1680GPM Dual-read Liquid Filled Gauge
SG-P25HPK2-160 Hydrant Flow Test Diffuser Kit with 4" Dial 160Psi/2120GPM Dual-read Liquid Filled Gauge
$995.50


2-1/2" Swivel Hydrant Flushing Discharge Elbow
  • 2½" Polished Chrome Female swivel hose thread x Male hose thread
  • 2½" Female Swivel NHT/ NST Inlet x 2-1/2" Male NHT/ NST Outlet
  • Used to re-direct water stream from hydrant. Also on pump discharge valves or suction inlets to minimize hose kinking.
  •  SG-P9430 2½" NST Polished Chrome Flushing Discharge Elbow $129.99

Hydrant Discharge Elbow
4" & 4½" NST Swivel Piezo Diffuser
The Swivel Diffuser performs three functions simultaneously: it swivels to aim flow, diffuses flow to reduce damage and performs flow tests, all at a price competitive to units that perform only one function.

Ruggedly constructed to provide years of dependable service, the Swivel Diffuser has a replaceable pitot tube, ball-bearing swivel and is available in 4" or 4½" NST.

  • P67514LF Swivel Diffuser 4" NST (0-100 LF Gauge) $699.00
  • P67502LF Swivel Diffuser 4½" NST (0-100 LF Gauge) $735.00
  • P67502CASE 4" and 4½" Diffuser Case $219.00

Accessories & Parts

SG-P66906LF - 4" NNI Dual read GPM/Psi Liquid filled gauge
0-60lb./1300 GPM (2-1/2" Hydrant Nozzle 0.90 coefficient) $79.50


SG-P66910LF - 4" NNI Dual read GPM/Psi Liquid filled gauge
0-100lb./1680 GPM (2-1/2" Hydrant Nozzle 0.90 coefficient)  $69.50


SG-P66916LF - 4" NNI Dual read Gpm/Psi Liquid filled gauge
0-160lb./2120 GPM (2-1/2" Hydrant Nozzle 0.90 coefficient)  $69.50


SG-P67512A Piezo tube Assembly
with snubber, 3-way Valve & Inner Pitot Tube $53.95

  • VAL-B3WAY025-4MFF - 1/4" NPT NNI 3 way Bleeder Ball Valve $22.95
  • SG-P67512-I - 3/8" MNPT x 1/4" FNPT Inner Pitot Tube $24.95
  • SG-P67512-S - 1/4" MNPTx1/4" FNPT NNI Pressure Gauge Filter Snubber $9.49
    • Three-Way L- port Bleeder/Ball Valve is rated to 500 psi and the bottom port is the common port. The standard handle has 360 degree rotation and lies over the open port. When the handle is rotated 90 degrees from either port, flow is shut off to both ports

SG-P65901- Quick connect Automatic Coupler Foster FM3003 1/4" Female NPT - $13.50
SG-P65902-
Quick Connect Plug Foster 10-3B 1/4" Male NPT - $2.95
SG-P675 - 2½" Hydrant Diffuser Case $82.49 (for SG-P67501 diffuser)


Liquid Filled Gauge - Dual Read GPM-Psi

Peizo Tube Assembly

1/4" NPT 3 way Bleeder Ball Valve

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Pressure Gauge Snubber**--------Quick Connect Coupler*with Plug


1. SG-P65001 - 1/4" Male Quick Connect with Bleed Valve- $59.50
2. SG-P67512 - 1/4" Pitot Peizo Tube -$66.50

3. FD-G25 - 2½” Swivel Rubber Gasket- $2.95
4. SG-9445 - 2½” Polished Chrome NH Swivel Body -275.50
5. SG-P66910LF - 4" NNI Dual read GPM/Psi Liquid filled gauge
0-100lb./1680 GPM (2-1/2" Hydrant Nozzle 0.90 coefficient)  $69.50


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Male Quick Connect with Bleed Valve _______Pitot Piezo tube

E-mail: nni_inc@hotmail.com
Phone: 305-687-3330
Toll Free: 1-877-NNI-FIRE
Fax: 815-366-8272
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