21Gu™ DEF Nozzle

The Industry's Most Comprehensive DEF/AdBlue-Filling Solution

End-to-end dispensing hardware solution for reliable, efficient DEF/AdBlue-filling
Industry standard DEF/AdBlue-filling solution in Europe
Unique Mis-Filling Prevention Device (MFPD) provides unparalleled filling assurance and peace of mind
Affordable mis-filling prevention insurance designed to protect your investment against potential mis-filling mishaps

Features & Benefits

Mis-filling prevention device eliminates the risk of accidental DEF/AdBlue filling or environmental contamination
Spout with magnetic interface prevents mis-filling mishaps
Durable streamlined nozzle design for easy, comfortable nozzle handling and makes it easy to differentiate DEF/AdBlue products
Total end-to-end affordable solution is a convenient and complete system from the Industry Leader
Comes with Integral Contaminant-Prevention Filter; this replaceable, 40-mesh filter provides an added level of protection against DEF/AdBlue contaminants
Outfitted in that familiar, and unmistakable "DEF/AdBlue Blue" with slogan badge for instant product identification

Maximum pressure and flow rate

40 psi (2.75 bar) maximum pressure
10 gpm (37.8 lpm) maximum flow rate

Are You Protected?

A fixed magnetic field within the Mis-Filling Prevention Device actuates a magnetic interface in the spout of the 21Gu^™ nozzle to allow the flow of DEF/AdBlue. Without the Mis-Filling Prevention Device, the DEF/AdBlue nozzle will not flow. Put the nozzle in the wrong tank – say, your diesel tank – no problem, the nozzle will not flow. No other DEF/AdBlue-filling nozzle has this DEF/AdBlue mis-filling protection capability.

OPW 21Gu™ Mis-filling Prevention Device (MFPD)

DEF/AdBlue mis-filling can be expensive.The OPW 21Gu^™ MFPD offers the industry's most effective and affordable insurance policy against mis-filling mishaps – actually stopping them before they happen. There is no better way to protect your investment and the environment.

Materials

Body: Special resin coated aluminum

Lever & Lever Guard: Duratuff®

Seals: Viton®

Inlet Size: M34 (adaptor required for each nozzle)

Weight: 2.41 lbs. each, 36 lbs./ case of 15; 1.1 kg each, 16.5 kg/ case of 15

Performance

Listings and Certifications

ISO 22241 Compliant

Ordering Specs

Nozzle Ordering Specifications

Product #	Description
21GU-0400	Wayne® / Bennett® / Gasboy® (Model 9862XX-ZWW) Nozzle designed for use WITHOUT Mis-Filling Prevention Device
21GU-040G	Gilbarco® / Gasboy® (Model 9862KX-Z) Nozzle designed for use WITHOUT Mis-Filling Prevention Device
21GU-0500	Wayne® / Bennett® / Gasboy® (Model 9862XX-ZWW) Nozzle designed for use WITH Mis-Filling Prevention Device
21GU-050G	Gilbarco® / Gasboy® (Model 9862KX-Z) Nozzle designed for use WITH Mis-Filling Prevention Device
21GU-SPOUT	DEF/AdBlue Replacement Spout designed for use WITH Mis-Filling Prevention Device
21GU-SPOUT-N	DEF/AdBlue Replacement Spout WITHOUT Mis-Filling Prevention Device
204133	DEF/AdBlue Replacement Slogan Badge
21GU-FLTR	Strainer and Spacer Washer

Note: Each nozzle requires one adaptor fitting to convert from M34 to 1" BSPP threads.

Choose Your Nozzle Outlet Style

21GU-SFH Stainless Steel Fixed Hose Fitting	21GU-SSS Stainless Steel Swivel	21GU-SSB Stainless Steel Swivel / Reconnectable Breakaway

Features SST construction and compatible with ISO 22241 Standard Converts nozzle from M34 threads to 1" BSPP	Features SST construction and compatible with ISO 22241 Standard Converts nozzle from M34 threads to 1" BSPP Long lasting single plane swivel Includes 21GU-SCS for attractive installation and protection of vehicles	Features SST construction and compatible with ISO 22241 Standard Converts nozzle from M34 threads to 1" BSPP Integral reconnectable breakaway 175-330 lbs (80-150 kg) Includes 21GU-BCS for attractive installation and protection of vehicles

21GU-SFH Stainless Steel Fixed Hose Fitting

21GU-SSS Stainless Steel Swivel

21GU-SSB Stainless Steel Swivel / Reconnectable Breakaway

Features

SST construction and compatible with ISO 22241 Standard
Converts nozzle from M34 threads to 1" BSPP

Features

SST construction and compatible with ISO 22241 Standard
Converts nozzle from M34 threads to 1" BSPP
Long lasting single plane swivel
Includes 21GU-SCS for attractive installation and protection of vehicles

Features

SST construction and compatible with ISO 22241 Standard
Converts nozzle from M34 threads to 1" BSPP
Integral reconnectable breakaway 175-330 lbs (80-150 kg)
Includes 21GU-BCS for attractive installation and protection of vehicles

21Gu™ Nozzle Adaptor Ordering Specifications

Product #	Description
21GU-SFH	DEF/AdBlue Stainless Steel Fixed Hose Inlet, 1" BSPP male
21GU-SSS	DEF/AdBlue Stainless Steel Swivel, 1" BSPP male
21GU-SSB	DEF/AdBlue Stainless Steel Reconnectable Breakaway / Swivel NOTE: One (1) 21GU-SSB is required for each nozzle. Hose connection end is 1" BSPP male thread.
21GU-SCS	Replacement DEF/AdBlue Swivel Cover Sleeve (Comes with 21GU-SSS)
21GU-BCS	Replacement DEF/AdBlue Swivel/Breakaway Cover Sleeve (Comes with 21GU-SSB)

21Gu™ Mis-Filling Prevention Device (MFPD)

Product #	Description
MFPD	21GU^™ Mis-Filling Prevention Device (MFPD). Order one MFPD or Bulk Packed for OEM sales (420 per case) NOTE: The MFPD is permanently installed in DEF/AdBlue tank fill pipe. Contact your vehicle supplier and specify the OPW DEF/AdBlue Mis-Filling Prevention Device.

Note: Want them individually packaged for retail? Contact OPW customer service at 1-800-422-2525.

Accessories

OPW 21Gu™ Hose Assembly

The OPW 21Gu^™ Series DEF Hose is the de facto standard for hoses in Europe. Designed with integral swivel couplings and an anti-kinking sleeve, the 21Gu^™ hose is easy to install and use. The OPW 21Gu^™ Hose meets compatibility testing as specified in ISO 22241 so that you can rest assured that your hose will last.

Learn more about the OPW 21Gu^™ Series DEF Hose >

Features

Specially designed for DEF-flow applications
Lightweight and highly flexible for easy customer handling
Smooth bore, seamless fluoropolymer lining for exceptional flow performance
Swivel end couplings provide for easy installation
Durable, reliable, long-life performance and maximum flow efficiency
Anti-kinking sleeve at nozzle end to reduce wear on hose during use

FAQ

Frequently Asked Questions

Q: What is DEF?

A: DEF stands for Diesel Exhaust Fluid.

Q: Why can I not use most standard petroleum equipment for DEF?

A: DEF must remain pure through the distribution channel. Many components commonly used for petroleum will contaminate DEF. OPW DEF components are compatible with DEF per ISO 22241.

Q: What are the thread connections on OPW DEF hanging hardware?

A: All OPW DEF hanging hardware have 1" BSPP connections. These connections were chosen for two reasons. First, to prevent accidental usage of new & used petroleum products that are not compatible with DEF. Second, to eliminate the need for thread sealing compounds which take a long time to cure properly and may not be compatible with DEF.

Q: Should I use thread seal tape or pipe dope?

A: No, OPW DEF equipment utilizes an elastomeric seal to eliminate the need for such sealing methods making field replacement faster and more reliable.

Q: What should I do if my OPW DEF nozzle is not fully dispensing fluid?

A: First check to see if an OPW MFPD or equivalent magnet is installed in the vehicle DEF fill system. The OPW DEF nozzle will not function fully if it is not installed into an OPW MFPD or equivalent per ISO 22241-1. If the MFPD is present, and the nozzle still does not dispense. Check to see if the venturi is clogged with DEF crystals. Overtime, DEF will crystallize and these crystals may clog the sensing tube. Dip the nozzle tip into clean DEF or de-ionized water, and check to see if it dispenses. If problems still persist contact your local OPW service technician for assistance.

Q: How do I know if my vehicle has an OPW MFPD in the DEF fill system?

A: Check with your vehicle supplier. It can be seen a blue ring installed in the DEF fill system (see image below).

Q: Can I install the MFPD after market if I do not have one?

A: Check with your vehicle supplier. Many fill systems were designed so that the MFPD can be installed after market if it was not installed at the factory, there may be exceptions.

Downloads

Catalog Page

21Gu™ DEF Nozzle

Brochures and Flyers

Articles

21Gu™ DEF Nozzle Article

Podcasts

OPW 21Gu™ - America's Truckin' Network radio interview on 700WLW

Other DEF/AdBlue Products

Blackmer STX-DEF Series Sliding Vane Pumps for DEF/AdBlue Transfer

Blackmer is committed to developing pumping and other ancillary equipment that meets the needs of Diesel Exhaust Fluid (DEF/AdBlue) production and transport. Blackmer pumps are ideal for the unique challenges presented in handling DEF/AdBlue. Extensively tested and designed around the ISO 22241-3 standard, Blackmer DEF/AdBlue equipment assures material compatibility, optimized productivity, improved safety and environmental protection. Recently making inroads in the DEF/AdBlue market by developing its STX3-DEF and 1220A-DEF/AdBlue Sliding Vane Pumps; Blackmer is currently developing a range of equipment needed for the production, shipping and transfer of DEF/AdBlue in the most efficient, cost-effective manner. Learn more >

Download the Blackmer DEF/AdBlue Market Brochure

Kamvalok® Dry Disconnect Couplers

Because of its unique poppet action the OPW Kamvalok® Dry Disconnect virtually eliminates spillage of any residual liquid contained within the line after disconnection. Kamvaloks® are used at transfer points where product loss is unacceptable.

Common applications include: Diesel Exhaust Fluid (DEF/AdBlue), paint, lacquers, inks, adhesives, fatty acids, pharmaceuticals, liquid soaps, petroleum products, solvents, ag-chemicals, vegetable oils, detergents, and many acids and caustics.

Learn more >

Products

Other Product Families

21Gu™ DEF Nozzle

The Industry's Most Comprehensive DEF/AdBlue-Filling Solution

Features & Benefits

Maximum pressure and flow rate

Are You Protected?

OPW 21Gu™ Mis-filling Prevention Device (MFPD)

Materials

Performance

Listings and Certifications

Nozzle Ordering Specifications

Choose Your Nozzle Outlet Style

21Gu™ Nozzle Adaptor Ordering Specifications

21Gu™ Mis-Filling Prevention Device (MFPD)

OPW 21Gu™ Hose Assembly

Features

Frequently Asked Questions

Q: What is DEF?

Q: Why can I not use most standard petroleum equipment for DEF?

Q: What are the thread connections on OPW DEF hanging hardware?

Q: Should I use thread seal tape or pipe dope?

Q: What should I do if my OPW DEF nozzle is not fully dispensing fluid?

Q: How do I know if my vehicle has an OPW MFPD in the DEF fill system?

Q: Can I install the MFPD after market if I do not have one?

Catalog Page

Brochures and Flyers

Articles

Podcasts

Blackmer STX-DEF Series Sliding Vane Pumps for DEF/AdBlue Transfer

Kamvalok® Dry Disconnect Couplers

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