Products > 781
781 series breather / drain plug

781
781 series breather / drain plug

Available in brass, nickel plated brass, aluminium, stainless steel & nylon

Description

Technical

Breather / Drain Plug, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory

• 781E for Ex e use
• 781D for Ex d use
• Drains equipment susceptible to moisture collection
• Enables equipment to breathe
• General purpose / industrial version available
• Nylon Ex e only version available (-20°C to +60°C)
• -60°C to 130°C (metallic versions)
• Globally marked, IECEx, ATEX & cCSAus

 

HOW TO ORDER

e.g. 781 – D – M – 3 = Ex d – M25 e.g. 781 – E – M – 3 = Ex e – M25 Other Thread Variations are available on request. For further information on ordering please refer to page 150. The CMP 781E range of Increased Safety type ‘e’ breather / drain plugs have been tested together with CMP serrated washers to ensure that in areas that are subject to vibration the plug does not suffer from self-loosening and in advertently fall out of the enclosure. Serrated washers are not included as standard but can be ordered separately

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 SIRA 10 ATEX 1307U
Code of Protection 781D: II 2G Ex d IIC Gb, II 1D Ex ta IIIC Da
781E: II 2G Ex e IIC Gb, II 1D Ex ta IIIC Da
Compliance Standards EN 60079-0,1,7,31
IECEx Certificate IECEx SIR 10.0149U
Code of Protection 781D: Ex d IIC Gb, Ex ta IIIC Da
781E: Ex e IIC Gb, Ex ta IIIC Da
Compliance Standards IEC 60079-0,1,7,31
cCSAus Certificate 1055233
Code of Protection 781D: Ex d IIC, Class I, Zone 1 AEx d IIC; Class I Div 1, Groups A,B,C,D
IP66, Enclosure Type 4X
781E: Ex e II, Class I, Zone 1, AEx e II
IP66, Enclosure Type 4X
Compliance Standards CSA C22.2 No 0-10, 0.5, 30, 94; e 60079-0,1,7, E61241-1-1, UL50, 1203, UL60079-0,1,7
UL Certificate E253914
Code of Protection 781D: Class I, Zone 1 AEx d IIB; Zone 20 AEx ta IIIC
781E: Class I, Zone 1, AEx e IIC;
EAC Certificate (Formerly GOST R, K & B) TC RU C-GB.AA87.B.00487
GOST R Certificate POCC.GB.35.H00102
CCOE / PESO (India) Certificate P333688
INMETRO Certificate TÜV 12.133OU
NEPSI Certificate GYJ13.1139X (781D), GYJ13.1138X (781E)
RETIE Approval 03866
Marine Approvals LRS: 01/00173
Continuous Operating Temperature 781D: -60°C to +130°C
781E: -60°C to +130°C (-20°C to +60°C Nylon)
Ingress Protection Rating ** 781D: IP66 (when fitted with CMP sealing accessories)
781E: IP66
Available Materials Brass, Nickel Plated Brass, Aluminium, Stainless Steel, Nylon (781E only)
Accessories Included (781E only) Integral Entry Thread equipment interface ‘O’ ring seal, Castellated Locknut

Product Table

Metric

Ordering Reference
(781D)
Ordering Reference
(781E)
Thread Size Minimum Thread Length Protrusion Length “F” Across Flats Dimension Across Corners Dimensions Max Installation Torque (Nm)
781DM2 781EM2 M20 x 1.5 15.0 12.7 30.0 33.0 7
781DM3 781EM3 M25 x 1.5 15.0 12.7  36.0 39.6 10
781DT1 781ET1 ½” NPT 19.9 12.7 30.0 33.0 7
781DT2 781ET2 ¾” NPT 20.2 12.7 36.0 39.6 10
Dimensions displayed in millimeters unless otherwise stated

Imperial

Ordering Reference
(781D)
Ordering Reference
(781E)
Thread Size Minimum Thread Length Protrusion Length “F” Across Flats Dimension Across Corners Dimensions Max Installation Torque (Nm)
781DM2 781EM2 M20 x 1.5 0.59  0.50 1.18 1.30 7
781DM3 781EM3 M25 x 1.5 0.59 0.50 1.42 1.56 10
781DT1 781ET1 ½” NPT 0.78 0.50 1.18 1.30 7
781DT2 781ET2 ¾” NPT 0.80 0.50 1.42 1.56 10
Dimensions displayed in inches unless otherwise stated

Download Spec Sheet

Download

Technical

Breather / Drain Plug, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory

• 781E for Ex e use
• 781D for Ex d use
• Drains equipment susceptible to moisture collection
• Enables equipment to breathe
• General purpose / industrial version available
• Nylon Ex e only version available (-20°C to +60°C)
• -60°C to 130°C (metallic versions)
• Globally marked, IECEx, ATEX & cCSAus

 

HOW TO ORDER

e.g. 781 – D – M – 3 = Ex d – M25 e.g. 781 – E – M – 3 = Ex e – M25 Other Thread Variations are available on request. For further information on ordering please refer to page 150. The CMP 781E range of Increased Safety type ‘e’ breather / drain plugs have been tested together with CMP serrated washers to ensure that in areas that are subject to vibration the plug does not suffer from self-loosening and in advertently fall out of the enclosure. Serrated washers are not included as standard but can be ordered separately

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 SIRA 10 ATEX 1307U
Code of Protection 781D: II 2G Ex d IIC Gb, II 1D Ex ta IIIC Da
781E: II 2G Ex e IIC Gb, II 1D Ex ta IIIC Da
Compliance Standards EN 60079-0,1,7,31
IECEx Certificate IECEx SIR 10.0149U
Code of Protection 781D: Ex d IIC Gb, Ex ta IIIC Da
781E: Ex e IIC Gb, Ex ta IIIC Da
Compliance Standards IEC 60079-0,1,7,31
cCSAus Certificate 1055233
Code of Protection 781D: Ex d IIC, Class I, Zone 1 AEx d IIC; Class I Div 1, Groups A,B,C,D
IP66, Enclosure Type 4X
781E: Ex e II, Class I, Zone 1, AEx e II
IP66, Enclosure Type 4X
Compliance Standards CSA C22.2 No 0-10, 0.5, 30, 94; e 60079-0,1,7, E61241-1-1, UL50, 1203, UL60079-0,1,7
UL Certificate E253914
Code of Protection 781D: Class I, Zone 1 AEx d IIB; Zone 20 AEx ta IIIC
781E: Class I, Zone 1, AEx e IIC;
EAC Certificate (Formerly GOST R, K & B) TC RU C-GB.AA87.B.00487
GOST R Certificate POCC.GB.35.H00102
CCOE / PESO (India) Certificate P333688
INMETRO Certificate TÜV 12.133OU
NEPSI Certificate GYJ13.1139X (781D), GYJ13.1138X (781E)
RETIE Approval 03866
Marine Approvals LRS: 01/00173
Continuous Operating Temperature 781D: -60°C to +130°C
781E: -60°C to +130°C (-20°C to +60°C Nylon)
Ingress Protection Rating ** 781D: IP66 (when fitted with CMP sealing accessories)
781E: IP66
Available Materials Brass, Nickel Plated Brass, Aluminium, Stainless Steel, Nylon (781E only)
Accessories Included (781E only) Integral Entry Thread equipment interface ‘O’ ring seal, Castellated Locknut

Product Table

Metric

Ordering Reference
(781D)
Ordering Reference
(781E)
Thread Size Minimum Thread Length Protrusion Length “F” Across Flats Dimension Across Corners Dimensions Max Installation Torque (Nm)
781DM2 781EM2 M20 x 1.5 15.0 12.7 30.0 33.0 7
781DM3 781EM3 M25 x 1.5 15.0 12.7  36.0 39.6 10
781DT1 781ET1 ½” NPT 19.9 12.7 30.0 33.0 7
781DT2 781ET2 ¾” NPT 20.2 12.7 36.0 39.6 10
Dimensions displayed in millimeters unless otherwise stated

Imperial

Ordering Reference
(781D)
Ordering Reference
(781E)
Thread Size Minimum Thread Length Protrusion Length “F” Across Flats Dimension Across Corners Dimensions Max Installation Torque (Nm)
781DM2 781EM2 M20 x 1.5 0.59  0.50 1.18 1.30 7
781DM3 781EM3 M25 x 1.5 0.59 0.50 1.42 1.56 10
781DT1 781ET1 ½” NPT 0.78 0.50 1.18 1.30 7
781DT2 781ET2 ¾” NPT 0.80 0.50 1.42 1.56 10
Dimensions displayed in inches unless otherwise stated