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      • SpinJet®
        • Plate-Mounted
          • High Flow
          • Low Flow
          • UHP
          • Robotic Tooling
        • Floor and Grate Cleaner
          • 40-1000-15 & 40-1050-10
          • 36-9950-15AX & 36-9960-15AX
          • 36-9900-15AX
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          • 1550-4S-20-20K
        • Self-Guided SpinJet™
        • CurbJet™
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        • NLB7420B Stack Cleaner
        • NLB7500B Stack Cleaner
        • Centering Guides
        • Typhoon™ 60 Rotating Pipe Nozzle
      • Surface Preparation
        • SRT-10-W1 Crawler
        • Vertajet™
        • Vortex® 36-9950-15AX
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        • Magnetic Crawlers
        • Vacuum Recovery
          • VPU-1000
          • BM35294
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        • HydroRyder™
        • StripeJet™
      • 3D Tank Cleaning
        • 3D Heads
          • Torrent™ Heat
          • Torrent™ 50
          • Torrent™ 200
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          • NLB3750-40-20K
        • Telescopic Lances
        • Swivel Turrets
        • Ball and Socket
        • Protective Cages
        • 325 Series Electric Unit
        • Standard Arms
        • Compact Arms
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        • ATL-5022 Automated Tube Lancer
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ProductsAccessoriesPump Controls & System ComponentsBy-Pass Valves

By-Pass Valves

NLB by-pass valves let you adjust the pressure on your pump unit with a simple turn of the T-bar handle… much like opening and closing a faucet. They are hydraulically cushioned for smooth pressure adjustment and field repairable. Models are available to handle all common operating pressures. The housing and all major components are precision machined of rugged stainless steel. Air-assisted models (part numbers with an A) are also available. We also offer simple conversion kits that allow older pump units to accept newer by-pass valves.

Contact Us

Features and Benefits:

  • Pressures: 10,000 psi, 20,000 psi, 24,000 psi, or 40,000 psi (700 bar, 1,400 bar, 1,650 bar, or 2,800 bar)
  • Flows up to 65 gpm (246 lpm)
  • Housing and major components precision-machined of stainless steel
  • Add to older pump units with a simple conversion kit

BV10-400: DM11267 Conversion Kit
BV10-650: DM12744 Conversion Kit
BV20-260: DM12699 Conversion Kit

Part NumberMax. PressureMax. FlowInlet ConnectionOutlet ConnectionRebuild Kit
BV10-40010,000 psi
(700 bar)
40 gpm
(151 lpm)
1" NPT1/2" NPTBV11316

$1.00 Add to Quote

BV10-65010,000 psi
(700 bar)
65 gpm
(246 lpm)
1" NPT1" NPTBV12635

$1.00 Add to Quote

BV10-650A10,000 psi
(700 bar)
65 gpm
(246 lpm)
1" NPT1" NPTBV12635

$1.00 Add to Quote

BV20-26020,000 psi
(1,400 bar)
26 gpm
(98 lpm)
1" MP1/2" NPTBV11317

$1.00 Add to Quote

BV24-35024,000 psi
(1,650 bar)
35 gpm
(132 lpm)
1" MP1/2" NPTBV18102

$1.00 Add to Quote

BV24-350A24,000 psi
(1,650 bar)
35 gpm
(132 lpm)
1" MP1/2" NPTBV18102

$1.00 Add to Quote

BV40-01040,000
(2,800 bar)
10 gpm
(38 lpm)
1-1/8"-12 HPM1/2" NPTBV2180

$1.00 Add to Quote

BV40-26040,000
(2,800 bar)
25 gpm
(95 lpm)
1-5/6-12UN-2A M1" NPT FBV37864

$1.00 Add to Quote

BV40-260A40,000
(2,800 bar)
25 gpm
(95 lpm)
1-5/6-12UN-2A M1" NPT FBV37866

$1.00 Add to Quote

BV36-11540,000
(2,800 bar)
15 gpm
(57 lpm)
1-1/8"-12 HPM1/2" NPTBV2180

$1.00 Add to Quote

Have Questions?

Reach Out to Our Expert Team Today!

At NLB, we're dedicated to assisting you. If you're uncertain about which product is best for your application, our team is ready to help you find the perfect solution. If we need to customize a product to fit your specific needs, we're prepared to do so! Simply give us a call or fill out the form, and one of our experts will be in touch with you shortly.

(800)-441-5059

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