Dredging Gate Valve

Dredging gate valves are specially designed for the harsh working conditions in the dredging industry. They are suitable for all types of dredging equipment, including cutter suction dredgers and trailing suction hopper dredgers. These valves are widely used in key systems such as slurry transportation, suction and discharge pipelines, hopper loading and shore discharge, and bypass pressure stabilisation. With excellent wear resistance and reliability, they ensure long‑term stable operation.

Overview

A dredge gate valve is a specialized valve used in dredging operations to control the flow of water and abrasive materials like slurry, sand, and stones through pipelines. It is a critical on/off component installed in the discharge pipeline of dredgers.

Performance And Features:

1.Dredge gate valves are developed acccording to the specific requirements of pipe used for dredger.

2.Dredge gate valves drived by hydraulic cylinder and sealed by rubber.

3.Stainless steel wedge gate and heat-affected valve body

4.Smart structure,high resisitance pressure and reliable seal.

5.Main mediums are sewage,water and oil.

6.Types:Switch type and continuous display type.

7.Dimensions range from DN300mm to DN1400mm.

8. Working Pressure: PN≤1.6MPa, PN≤2.5MPa (up to 25 bar)
Materials
Body Material: Cast steel (Q235, 16Mn)

Gate Materia: Stainless steel

Seal Material: NBR, NR rubber

Hydraulic cylinder:body steel 45,pistion rod 1Cr17Ni2.

Reference Drawing

Main parameaters:

Working Pressure PN≤1.6Mpa
DN	H1(mm)	H2(mm)	b(mm)	d(mm)	K(mm)	D(mm)	n-Th
300	296	1628	478	240	400	460	12-M24
350	321	1753	528	240	460	505	16-M24
400	351	1928	568	260	515	565	16-M24
450	381	2048	618	260	565	615	16-M24
500	420	2203	670	270	620	670	20-M24
550	445	2348	720	270	675	730	20-M24
600	470	2483	770	280	725	780	20-M27
650	495	2765	830	280	785	835	20-M27
700	525	2955	900	318	840	895	24-M27
750	575	3088	940	340	890	965	24-M30
800	600	3258	1006	348	950	1050	24-M30
850	620	3385	1106	348	1000	1065	24-M30
900	665	3543	1126	388	1050	1115	28-M30
950	715	3700	1170	400	1105	1185	28-M30
1000	740	3965	1240	436	1180	1255	28-M33
1100	785	4280	1350	436	1270	1340	32-M33
1200	845	4550	1450	478	1380	1455	32-M36
1300	910	4900	1560	819	1485	1575	36-M36
1400	965	5200	1670	819	1590	1675	36-M42
Working Pressure PN2.5Mpa
DN	H1(mm)	H2(mm)	b(mm)	d(mm)	K(mm)	D(mm)	n-Th
300	350	1518	478	386	430	485	16-M24
350	370	1718	528	386	490	550	16-M24
400	380	1918	568	428	550	620	16-M27
450	405	2118	618	428	600	655	20-M27
500	440	2268	670	456	660	725	20-M30
550	470	2388	720	456	710	775	20-M30
600	485	2520	770	480	770	840	20-M33
650	525	2808	830	486	820	895	20-M33
700	565	3013	900	540	875	945	24-M33
750	750	3005	940	580	925	995	24-M33
800	625	3335	1006	600	990	1065	24-M36
850	645	3430	1106	600	1040	115	24-M36
900	695	3638	1126	670	1090	1165	28-M36
950	735	3790	1170	678	1140	1215	28-M36
1000	780	4100	1240	748	1210	1295	28-M42
1100	830	4380	1350	748	1320	1415	32-M42
1200	890	4600	1450	819	1420	1515	32-M42
1300	965	5000	1560	819	1530	1630	36-M42
1400	1025	5400	1670	819	1640	1760	36-M48

FAQ

Q1: What is the difference between a dredge gate valve and a standard gate valve?

A: Dredge gate valves are specifically engineered for abrasive slurries, featuring robust materials, wear-resistant seals, and hydraulic actuation to withstand harsh dredging conditions.

Q2: What are the main types of dredge valves?

A: Common types include rubber ring gate valves (for on/off control) and regulating valves (for flow control)