DSP coupling is mainly used in Firefighting field, DSP coupling has difference with Guillemin coupling. DSP coupling is also called French fire hose couplings.

1. Web:www.icmhoseind.com
DSP Coupling
ICM INDUSTRIES CO.,LTD
Add: North of Binhe Road, Shanghe, Jinan, China
Ph:+86-151-6915-4504 TEX:+86-150-9890-9442
Email:sales@icmhoseind.com
1
一． DSP Coupling
1. DSP coupling is also called DSP fire-fighting hose couplings, it is a quick release couplings.
2. Standard: NF S61-701
3. Material: Aluminum + T6 treatment
4. The main parts including:
A. Lip Seal
B. Lugs
C. Locking Ring, can be turned up to 45°.
D. Thread end or hose tail
5. Feature
DSP connectors are resistant to corrosion, heat, chemical influences and mechanical damage. A long
lifespan is therefore guaranteed.

2. Web:www.icmhoseind.com
DSP Coupling
ICM INDUSTRIES CO.,LTD
Add: North of Binhe Road, Shanghe, Jinan, China
Ph:+86-151-6915-4504 TEX:+86-150-9890-9442
Email:sales@icmhoseind.com
2
二． Types and Size
1. Hose tail with multi- serrated
2. Hose tail with 2-barbs
3. Female end with locking ring
4. Female end
Name Tail Size Lug distance
DN 40 35, 38, 45 55
DN 65 65,70 84
DN 100 110 123
Name Tail Size Lug distance
DN 65 65,70 84
DN 100 110 123
Name Size Lug distance
DN 40 11/2“, 2” 55
DN 65 2“, 21/2” 84
DN 100 4“ 123
Name Size Lug distance
DN 40 11/2“， 2” 55
DN 65 2“，21/2” 84
DN 100 4“ 123

3. Web:www.icmhoseind.com
DSP Coupling
ICM INDUSTRIES CO.,LTD
Add: North of Binhe Road, Shanghe, Jinan, China
Ph:+86-151-6915-4504 TEX:+86-150-9890-9442
Email:sales@icmhoseind.com
3
5. Male end with locking ring
6. Male end
7. Plugs with chain
三． Thread:
Male Thread: EN ISO 228-1, BSP
Female Thread: EN ISO 228-1, BSP
四． Working Pressure: 16 Bar/230 PSI
Test Pressure: 30 Bar/435 PSI
Minimum Blast Pressure: 50 Bar/725PSI
Name Size Lug distance
DN 40 11/2“， 2” 55
DN 65 2“，21/2” 84
DN 100 4“ 123
Name Size Lug distance
DN 40 11/2“ 55
DN 65 21/2” 84
DN 100 4“ 123
Name Size Lug distance
DN 40 11/2“ 55
DN 65 21/2” 84
DN 100 4“ 123

4. Web:www.icmhoseind.com
DSP Coupling
ICM INDUSTRIES CO.,LTD
Add: North of Binhe Road, Shanghe, Jinan, China
Ph:+86-151-6915-4504 TEX:+86-150-9890-9442
Email:sales@icmhoseind.com
4
五． Temperature: -20 up to 65 Degree
六． Application：
These coupling is mainly used on Fire-fighting hose or pump.
七． Assembly
1. Wire binding
2. Low pressure ferrules
3. Band clamps
4. Worm drive clamps
5. Smooth Ferrule
6. Crimp ring
八． Different with Guillemin coupling
A. Different Standard:
1. Guillemin coupling is according to EN14420-8/NF E 29-572
2. DSP Coupling is according to NF S61-704 and NF S61-705
B. Different used Field
1. Guillemin coupling is used for Pressure and suction delivery of liquid(such as general industrial water,
hydrocarbons, chemical) and solid items(such as powders and granules). Used in industrial installations, irrigation,
loading and unloading systems, as the equipment of road and tail tankers.
2. DSP is used for firefighting application.
C. Size is different
1. Guillemin coupling has more size
2. DSP coupling mainly has DN 40, DN 65 and DN 100.

5. Web:www.icmhoseind.com
DSP Coupling
ICM INDUSTRIES CO.,LTD
Add: North of Binhe Road, Shanghe, Jinan, China
Ph:+86-151-6915-4504 TEX:+86-150-9890-9442
Email:sales@icmhoseind.com
5
D. Different Function
1. Guillemin couplings are used for Delivery and suction-delivery applications for water, fluids, hydrocarbons(including
Bituminous substances), chemical(Stainless Steel material Guillemin couplings) and dry loose material(Powders,
granules).
2. DSP DN 40 and DN 65 mainly used in Delivery not suction. DN 100 could use in suction-delivery.
E. Material:
1. Guillemin coupling made in Aluminum, brass, Stainless Steel and PP.
2. DSP mainly in Aluminum and Brass.