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789 | 90 Degree Union Available in brass, nickel plated brass, aluminium, stainless steel

90° Union, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory

• Allows the connection of conduit or glands to equipment
• Suitable for rigid or flexible conduit
• Integral coupling eliminates the need to rotate the conduit
• General Purpose / industrial version available
• Equipment interface ‘O’ ring seal available
• -60?C to 200?C
• Globally marked, IECEx, ATEX & cCSAus

Note: Male-to-Male to Female-to-Female thread option available.

Available with an equipment interface ‘O’ ring seal. For such options please add the suffix letter “R” after the type number in the ordering reference above, e.g. 789RDM2M2.

If 2 separate enclosures are required to be connected together please contact CMP Products.

Design Specification BS 6121:Part 1:1989, IEC 62444, EN 62444
Enclosure Protection IK10 to IEC 62262 (20 joules) Brass & Stainless Steel only
ATEX Certificate SIRA10ATEX1306U
Code of Protection II 2 GD Ex d IIC Gb, Ex e IIC Gb, Ex ta IIIC Da IP6X
IM2 Ex d I Mb / Ex e I Mb
Compliance Standards EN 60079-0,1,7,31
IECEx Certificate IECEx SIR 10.0148U
Code of Protection Ex d IIC Gb, Ex e IIC Gb, Ex d I Mb, Ex e I Mb, Ex ta IIIC Da IP6X
Compliance Standards IEC 60079-0,1,7,31
cCSAus Certificate 1055233
Code of Protection Class I, Div 1 & 2, Groups A,B,C,D ; Enclosure type 4X : Class I, Zone 1, AEx de II ; Ex de II
Compliance Standards C22.2 No.0,0.5,30,94, CAN/CSA E60079-0,1,7, CAN/CSA E61241-1, UL Std 50, 1203, UL 60079-0,1,7
EAC Certificate (Formerly GOST R, K & B) TC RU C-GB.AA87.B.00487
INMETRO Approval TÜV 12.1334U
RETIE Approval 03866
Marine Approvals LRS: 01/00173
Ingress Protection Rating ** IP66 when fitted with a CMP ‘O’ ring or Entry Thread Seal
Available Materials Brass (standard), Electroless Nickel Plated Brass, Aluminium, Stainless Steel

** When CMP installation accessories are used. Refer to Maintaining a Seal for further information.

Product Selection Table

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Technical Illustration

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MetricNPTBore Diameter ?"C"Max Protrusion Length ?"D?"Max Overhang Length "?F"Across Flats Hex ?"G?"Across Corners Ø ?"G?"Installation Torque (Nm)Weight (Ozs)
Ordering Reference (Brass, Metric)Male Forward Thread Size ?"A?"
Minimum Thread Length ?"E?"
Female Rear Thread Size "?B?"Ordering Reference (Brass, NPT)Male Forward NPT Thread Size ?"A?"Minimum NPT Thread Length "?E"? (in)Female Rear Thread Size "?B?"
789DM2M2M20 X 1.50.59M20 X 1.5789DT1T11/2"0.791/2"0.562.482.511.811.99712.35
789DM3M3M25 X 1.50.59M25 X 1.5789DT2T23/4"0.803/4"0.792.782.741.972.171015.87
789DM4M4M32 X 1.50.59M32 X 1.5789DT3T31"0.981"1.042.983.072.362.601520.81
789DM5M5M40 X 1.50.59M40 X 1.5789DT4T41 14"1.011 14"1.283.303.342.562.812526.10
789DM6M6M50 X 1.50.59M50 X 1.5789DT5T51 1/2"1.031 1/2"1.693.783.792.953.253037.04
789DM7M7M63 X 1.50.59M63 X 1.5789DT6T62"1.062"2.174.284.533.553.914553.62
All dimensions shown are in inches unless otherwise stated
MetricNPTBore Diameter "?C"?Max Protrusion Length "D?"Max Overhang Length ?"F?"Across Flats Hex ?"G?"Across Corners Ø ?"G"?Installation Torque (Nm)Weight (Kgs)
Ordering Reference (Brass, Metric)Male Forward Thread Size ?"A?"
Minimum Thread Length "?E?"
Female Rear Thread Size ?"B?"Ordering Reference (Brass, NPT)Male Forward NPT Thread Size ?"A?"Minimum NPT Thread Length "?E"? (in)Female Rear Thread Size "?B?"
789DM2M2M20 X 1.515.0M20 X 1.5789DT1T11/2"0.791/2"14.362.963.846.050.670.35
789DM3M3M25 X 1.515.0M25 X 1.5789DT2T23/4"0.803/4"20.170.669.550.055.0100.45
789DM4M4M32 X 1.515.0M32 X 1.5789DT3T31"0.981"26.475.778.060.066.0150.59
789DM5M5M40 X 1.515.0M40 X 1.5789DT4T41 1/4"1.011 14"32.683.784.865.071.5250.74
789DM6M6M50 X 1.515.0M50 X 1.5789DT5T51 1/2"1.031 1/2"43.095.996.375.082.5301.05
789DM7M7M63 X 1.515.0M63 X 1.5789DT6T62"1.062"55.0108.8115.190.299.2451.52
All dimensions shown are in millimetres unless otherwise stated