Is the DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket compatible with ISO 16028 couplers from other manufacturers and safe for use at pressures up to 500 bar?

Yes. The DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket is compatible with ISO 16028 couplers from other manufacturers (interchangeable with ISO-F quick couplings) except for size DN5, and is suitable for hydraulic power (hydraulic oil) and industrial use. It is designed for applications with large pressure spikes and features a pin to prevent accidental disconnection and one-hand operation. Working pressure is rated up to 500 bar. Select sealing material according to operating temperature and fluid: NBR for â25Â°C to +100Â°C or Viton for â15Â°C to +200Â°C.

Can the DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket be operated safely with one hand under high-pressure spikes?

Yes - the DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket is designed for one-handed operation and includes a locking pin to prevent accidental disconnection, making it suitable for safe use under typical field conditions with large pressure spikes. Itâs a flat-face, leak-free coupling built for construction machinery and high-pressure hydraulic systems (up to 500 bar). However, safe operation under high-pressure spikes depends on correct selection of sealing material (NBR or Viton per temperature and media), proper installation, and adherence to ISO 16028 compatibility and manufacturer torque/pressure guidelines. If in doubt for your specific pressure spike profile or critical application, consult the manufacturer or an engineer.

Does the DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket offer interchangeable sealing options for different temperatures?

Yes. The DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket offers interchangeable sealing options for different temperature ranges. It is supplied with NBR seals (suitable for â25Â°C to +100Â°C) and Viton seals (suitable for â15Â°C to +200Â°C), and the sealing material can be selected according to the application.

DNP PLT4 leak-free hydraulic quick coupling, carbon steel GW socket

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)
Standard length [m]	10, 15, 2

Leak-free flat-face quick coupling designed mainly for construction machinery, where large pressure spikes occur. It features a pin to prevent accidental disconnection. The quick coupling can be operated with one hand. Depending on the application, the appropriate sealing material should be selected. Interchangeable with ISO-F quick couplings from other manufacturers. Standard: ISO 16028 (except size DN5). Application: hydraulic power (hydraulic oil), industrial. Working pressure: up to 500 bar. Material: steel with zinc-nickel coating. Sealing: NBR (from -25°C to +100°C), Viton (from -15°C to +200°C).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
DP-PLT4-0404112	DN5 socket with 1/8" BSP female thread, nitrile seal, with valve	-	500	In stock	Enquiry
DP-PLT4-0606112	DN6 socket with 1/4" BSP female thread, nitrile seal, with valve	-	400	In stock	Enquiry
DP-PLT4-1310112	DN10 socket with 3/8" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-1313112	DN10 socket with 1/2" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-1319032	DN10 socket with 3/4"-16 UNF female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2013112	DN12 socket with 1/2" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2019112	DN12 socket with 3/4" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2023032	DN12 socket with 7/8"-14 UNF thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2027032	DN12 socket with G1 1/16"-12 UNF, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2219112	DN16 socket with 3/4" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2219112-V	DN16 socket with 3/4" BSP female thread, Viton seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2519112	DN19 socket with 3/4" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2525112	DN19 socket with 1" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2527032	DN19 socket with 1.1/16"-16 UNF thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-2533032	DN19 socket with 1.5/16"-12 UNF thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-3025112	DN25 socket with 1" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry
DP-PLT4-3025112-V	DN25 socket with 1" BSP female thread, Viton seal, with valve	-	350	In stock	Enquiry
DP-PLT4-3031112	DN25 socket with 1.1/4" BSP female thread, nitrile seal, with valve	-	350	In stock	Enquiry

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Leak-free flat-face quick coupling designed mainly for construction machinery, where large pressure spikes occur. It features a pin to prevent accidental disconnection. The quick coupling can be operated with one hand. Depending on the application, the appropriate sealing material should be selected. Interchangeable with ISO-F quick couplings from other manufacturers. Standard: ISO 16028 (except size DN5). Application: hydraulic power (hydraulic oil), industrial. Working pressure: up to 500 bar. Material: steel with zinc-nickel coating. Sealing: NBR (from -25°C to +100°C), Viton (from -15°C to +200°C).