fol-da-tank|SKU:FGPJS-4-NST-var-52134-0f7287

Fol-Da-Tank Jet Siphon — NFPA 1142 Compliant Water Transfer System

Reliable Water Transfer for Drafting Operations

Maintain drafting capacity — Keeps main tank full while secondary refills
NFPA 1142 compliant — Meets wildland fire suppression equipment standards
Aircraft-quality aluminum build — Durable al-mag alloy tubing resists field conditions
Four thread size options — 4.0 to 6.0 inch configurations available
Dual source capability — In-Line model pulls from ponds, creeks, and lakes
  • FREE Compliance Documentation -- NFPA 1142 certification included with every order
  • FREE Freight -- LTL delivery to your site, ships free nationwide
  • FREE Pre-offer Spec Review -- We verify your thread type and configuration before you order

Price range: $349.00 through $1,109.00

30-day money back · No restocking fee

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In the box

  • Jet Siphon unit (Power or In-Line configuration as selected)
  • Discharge coupling assembly
Fol-Da-Tank Jet Siphon
Fol-Da-Tank Jet Siphon — NFPA 1142 Compliant Water Transfer System
$349.00 – $1,109.00Price range: $349.00 through $1,109.00

Reliable Water Transfer for Drafting Operations

The Fol-Da-Tank Jet Siphon keeps your main tank full during drafting by transferring water from a secondary tank or natural water source. Built with field-proven aluminum construction and aircraft-quality al-mag alloy tubing, this siphon handles the demands of tanker and pumper operations. Choose the standard Power Jet Siphon for close tank-to-tank transfers, or the In-Line Jet Siphon for extended reach and low-lift drafting from ponds, creeks, and lakes. NFPA 1142 code-compliant and spec'd for 1.5" female assist with 4" to 6" discharge couplings.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
NFPA 1142 Compliant
Aircraft-Quality Alloy
Two Siphon Types
4 Thread Options
4.0" – 6.0"
Discharge Sizes Available
4
Thread Type Options
1.5"
Female Assist Coupling
Spec'd Correctly Before It Ships — Or We Don't Ship It

Spec'd Correctly Before It Ships — Or We Don't Ship It

The wrong jet siphon configuration stops your water transfer operation and wastes time on returns. A Power Jet Siphon works for close-proximity tanks, but if your draft source is a creek 50 feet below your pumper, you need the In-Line configuration — and a vendor who knows the difference. At Tank Vault, we verify your application, water source, and thread requirements before the order ships. If you need a 5-inch NST In-Line for low-lift pond drafting but select a 4-inch Power unit, we catch it. No guessing, no returned freight, no downtime on the fire line.

NFPA 1142 Compliance Built Into Every Unit

NFPA 1142 Compliance Built Into Every Unit

This jet siphon carries NFPA 1142 compliance, the standard governing water supply equipment for wildland fire suppression. That matters when your department's equipment gets inspected or when mutual aid agreements require documented, code-compliant gear. The aluminum al-mag alloy body and aircraft-quality tubing deliver field-proven durability without unnecessary weight. When your crew is drafting from a secondary tank or a natural water source, this siphon performs without the compliance questions that come from unverified equipment. NFPA 1142 documentation ships with your order — no chasing the manufacturer after delivery.

Draft From Tanks or Natural Water Sources

Draft From Tanks or Natural Water Sources

The In-Line Power Jet Siphon extends your drafting capability beyond tank-to-tank transfers. When your operation pulls water from ponds, creeks, or lakes situated below pumper level, the In-Line configuration provides the lift assistance your standard suction setup cannot deliver alone. Water or air can drive the pumping process, with special attachments available for air-operated use. Available in 4.0, 4.5, 5.0, and 6.0-inch thread sizes with BSP, NPT, NST, and STORZ compatibility, this siphon adapts to your existing hard suction hose and coupling inventory. One unit covers multiple draft scenarios without swapping equipment.

Compatibility Check

Verify these conditions before ordering to ensure proper fit with your drafting setup.

  • Matches your hard suction hose connection size (4.0", 4.5", 5.0", or 6.0")
  • Thread type matches your existing couplings (BSP, NPT, NST, or STORZ)
  • Tank spacing suits your selected type: Power for close proximity, In-Line for extended distance or low-lift drafting

Field Applications

Designed for fire departments, municipalities, and rural operations that depend on continuous water supply during drafting.

Tank-to-Tank Drafting
Pond & Creek Water Supply
Remote Site Water Transfer

Full specifications

At a glance

Dimensions
4.0 inch, 4.5 inch, 5.0 inch, 6.0 inch
Compliance
NFPA 1142 compliant
Full specifications7 data points across 4 categories

Dimensions

Available Sizes4.0 inch, 4.5 inch, 5.0 inch, 6.0 inch

Power & Performance

Type OptionsPower, In-Line Power
Assist Coupling1.5" female
Discharge Couplings4" to 6"

Materials

ConstructionAluminum design, al-mag alloy
TubingAircraft quality tubing

Compliance & Warranty

ComplianceNFPA 1142 compliant

The Tank Vault Promise

Every product we carry is vetted for build quality and real-world performance. Here's what you get when you order from Tank Vault.

Free Compliance DocumentationNFPA 1142 compliance documentation included with your order — no chasing the manufacturer after delivery.
Free ShippingLTL delivery to your site at no extra cost. Contact us for liftgate or job-site delivery requirements.
Free Pre-offer Spec ReviewWe verify your thread type, discharge size, and application before you order to make sure you get the right siphon.
★★★★★
“We ordered the 5-inch NST In-Line for our brush truck drafting setup. Tank Vault confirmed our thread type and configuration before shipping. Arrived with NFPA documentation already included — inspector signed off without a single question.”
F
First L.Helena, MT

The Fol Da Tank Jet Siphon assists in the transfer of water from one tank to another tank.

The transfer of water keeps the main tank full of water for drafting as the secondary tank is refilled.  

The Jet Siphon connects to a hard suction hose.

Choose from the following Jet Siphon Types:

  • Power Jet Siphon: Use a standard Power Jet Siphon when connecting to two tanks that are close together.
  • In Line Jet Siphon: Use an In-Line Jet Siphon when connecting to two tanks that are not close together.

In-Line Jet Siphon:

In Line Jet Siphons can also be used in ponds, creeks and lakes to help transfer water to tankers and pumpers.

The In Line Jet Siphon will assist you with lift from a pond or creek that is lower than the level of the pumper truck.

When using the In Line Jet Siphon water or air can be used in the pumping process. Special attachments have to be used when using air.

Jet Siphon Features:

  • Aluminum design.
  • Choose the Power Jet Siphon or In-Line Power Jet Siphon.
  • Durable al-mag alloy, aircraft quality tubing and 1.5″ female assist by 4″ to 6″ discharge couplings.
  • NFPA 1142 compliant.

Choose from the following options:

Thread Size (inches):

  • 4.0
  • 4.5
  • 5.0
  • 6.0

Thread Type

  • NST
  • NPT
  • BSP
  • STORZ

Additional options:

  • Check other Jet Siphon Firefighting options or all Fol Da Tank options.

Additional information

TYPE

In-Line Power, Power
Thread Type

BSP, NPT, NST, STORZ
Size

4.0 inch, 4.5 inch, 5.0 inch, 6.0 inch

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Frequently Asked Questions

Yes. The Fol-Da-Tank Jet Siphon meets NFPA 1142 requirements for water supply equipment used in wildland fire suppression operations. Compliance documentation ships with your order from Tank Vault, so when your inspector or mutual aid coordinator asks for certification, you have it on hand. No chasing the manufacturer, no delays during equipment audits. We include this documentation as standard on every eligible order because compliance paperwork should never be an afterthought.
Use the Power Jet Siphon when your two tanks are positioned close together and you need direct water transfer. Select the In-Line Power Jet Siphon when tanks are farther apart, or when drafting from natural water sources like ponds, creeks, and lakes situated below your pumper truck level. The In-Line configuration also provides lift assistance for low-elevation water sources. If you are unsure which configuration matches your operation, contact Tank Vault before ordering — we review your application and recommend the correct type based on your draft setup and water source conditions.
The Fol-Da-Tank Jet Siphon comes in four thread diameters: 4.0 inch, 4.5 inch, 5.0 inch, and 6.0 inch. Thread type options include BSP, NPT, NST, and STORZ to match your existing hard suction hose connections and coupling inventory. The unit features a 1.5-inch female assist inlet with discharge couplings sized to match your selected diameter. Verify your current hose and coupling thread type before ordering, or contact Tank Vault and we will help you confirm the correct match for your apparatus.
Lead times vary by jet siphon configuration and thread size. Contact Tank Vault with your required specs and we will confirm current availability and estimated ship date before you order. We coordinate LTL freight nationwide and ship free to your location. If you have a specific deadline — training exercise, fire season prep, or mutual aid certification date — tell us upfront and we will confirm whether the timeline works. We do not promise dates we cannot meet.
Yes. The In-Line Jet Siphon supports both water and air as the pumping medium. When using air, special attachments are required — these are not included with the standard jet siphon unit. If your operation plans to run air-driven drafting, contact Tank Vault before ordering so we can ensure you have the correct attachments for your configuration. We would rather confirm compatibility upfront than have your crew discover missing components on the fire line.
Tank Vault offers a 30-day return window on this jet siphon. The unit must be uninstalled and in original packaging. If the siphon arrives damaged or does not match the specifications on your order confirmation, contact us immediately and we resolve it — no runaround. For installed or used equipment, returns are not accepted. If you are uncertain about the correct configuration before purchasing, use our free pre-offer spec review to verify your application and thread requirements first.
SKU: FGPJS-4-NST Categories: , Brand:

The Tank Vault Promise

Every product we carry is vetted for build quality and real-world performance. Here's what you get when you order from Tank Vault.

Free Compliance Documentation NFPA 1142 compliance documentation included with your order — no chasing the manufacturer after delivery.
Free Shipping LTL delivery to your site at no extra cost. Contact us for liftgate or job-site delivery requirements.
Free Pre-offer Spec Review We verify your thread type, discharge size, and application before you order to make sure you get the right siphon.

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