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Overview
- All exterior components are 316 stainless steel or corrosion-resistant composite
- Space-saving flush or exterior mounted models available
- Local visual indicators provide system status
- Leak compensation models are equipped with rapid purge valve and visual purge status indicator
- All models utilize dry, clean inert gas supply of 60 PSI (4 bar) to 115 PSI (8 bar)
- Ambient operating temperature -4°F (-20°C) to 131°F (55°C)
- Type X models provide automatic purge cycle and 4PNO/20A/440VAC power contactor with 115 VAC or 230 VAC coil
Specifications
Application | Hazardous Environments |
Color | Unpainted |
Consist Of | Purge and Pressurization Continuous Flow Service Kit |
Finish | Brushed |
IP Rating | IP54 |
Material | Stainless Steel 316L |
Modification Services | No |
Nema Rating | Type 4, 4X, 12 |
Type | Other Accessories |
Weight | 3.3 lb |
Works With | NEMA / IEC |
Package Dimensions (L x W x H) | 13.3 IN x 9.4 IN x 7 IN |
Package Dimensions (L x W x H) | 33.782 cm x 23.876 cm x 17.78 cm |
Package Weight (Imperial) | 3.300 L |
Package Weight (Metric) | 1.497 kg |

LB48SST
1-1/4 Inch 316 Stainless Steel Form 8 (LB) Conduit Body, Cover and Gasket with Polished Finish
FBO234DS
Double sided electrical box mounting bracket for mounting to either side of a stud. It is made of pre galvanized steel with a stamped construction and silver color. Dimensions are 5 in. height, 6-7/8 in. width, and 3/8 in. depth. It is for use with 1-1/2 in. or 2-1/8 in. deep electrical boxes and 4 in. or 4-11/16 in. square boxes, with 2-1/2, 3-1/2, or 4 in. stud depth.How to Install the nVent Hoffman Purge/Pressurization Unit
This guide provides step-by-step instructions for installing and configuring the nVent Hoffman Purge/Pressurization Unit to ensure safe operation in hazardous environments.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, 6mm OD Nylon tubing, Dry contact alarm
- Prepare the enclosure
Using the supplied mounting template, cut mounting holes into the enclosure. Ensure that the Control Unit and Relief Valve are diagonally opposed.
- Mount the Control Unit
Secure the Control Unit to the enclosure using the provided screws. Ensure it is firmly attached and positioned for easy visibility of indicators.
- Mount the Relief Valve
Secure the Relief Valve to the enclosure in a location that allows for proper airflow and access.
- Connect tubing
Connect the Control Unit and Relief Valve using 6mm OD Nylon tubing. Ensure all connections are tight and leak-free.
- Connect the alarm output
Wire the dry contact alarm output from the Control Unit as required for your system.
- Connect the air supply
Connect an isolated air supply to the Control Unit. Ensure the supply pressure is set to 60 PSIG (4 bar) and does not exceed 115 PSIG (8 bar).
- Check enclosure integrity
Ensure the enclosure door is closed, fully latched, and free of leaks before proceeding.
- Activate the air supply
Turn on the air supply and monitor the system. Slowly increase the Leakage Compensation Valve until the Alarm Indicator turns from RED to GREEN.
- Start the purging process
Turn the Purge Control Valve ON and ensure the Purge Indicator turns from BLACK to YELLOW, indicating that purging has begun.
- Complete the purging
After the required purge time has elapsed, turn the Purge Control Valve OFF to stop the high purge flow.
- Power the enclosure
Once purging is complete, power can now be applied to the enclosure. Ensure all safety checks are completed before energizing.
- Refer to the manual
Consult the full manual for any additional assistance or troubleshooting as needed.
Frequently Asked Questions about nVent
What industries and applications are nVent products used for?
nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.
What environmental ratings do nVent products have?
nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.
What accessories are available for nVent products?
nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.
What certifications and standards do nVent products comply with?
nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.
What is nVent's warranty policy?
nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.
What technical support does nVent offer?
nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.


