Slurry Pumps and Valves

Gapless Gate Valve

Name: Gapless Gate Valve
Brand: Xinhai

The Xinhai gapless gate valve provides positive isolation of abrasive slurries across mineral processing circuits. It is designed without a bottom seat cavity, eliminating the dead zone where settled solids would prevent full closure or cause premature wear.

Request a Quote 25 models

01Model

02Model

03Working Pressure

04Dimensions (mm)

Technical parameters

Typical installations include slurry pump suction and discharge lines, hydrocyclone feed pipes, and thickener underflow isolation. The valve’s full-bore design maintains line pressure and avoids clogging, making it suitable for high-solids, fast-settling slurries.

The parameter table lists models by working pressure and dimensions. The model code, such as XWXZF 80, incorporates the nominal diameter, so match this to your pipe bore. Pressure ratings reflect the maximum continuous working pressure at ambient temperature. A higher rating suits longer pipelines or elevated pumping heads.

Gapless Gate Valve technical parameters, 25 models
Model	Model	Working Pressure	Dimensions (mm)
A	D	D1	D2	n-φd	D0	H	H1	H2	B
Manual	XWXZF 50	0.6MPa1.0MPa1.6MPa	60	165	125	94	4-φ18	270	462	372	90	180
XWXZF 80	64	200	160	126	8-φ18	270	475	370	112	223
XWXZF 100	64	220	180	150	8-φ18	270	600	440	120	240
XWXZF 125	59	240	210	177	8-φ18	270	690	508	126	252
XWXZF 150	70	285	240	200	8-φ22	360	790	550	150	300
XWXZF 200	70	340	295	256	12-φ22	360	946	678	180	360
XWXZF 250	76	395	350	316	12-φ22	360	1070	736	205	410
XWXZF 300	83	445	400	366	12-φ22	610	1190	840	235	470
Electric	DZW 50	60	165	125	94	4-φ18			605	90	180
DZW 80	64	200	160	126	8-φ18			670	112	223
DZW 100	64	220	180	150	8-φ18			730	120	240
DZW 125	59	240	210	177	8-φ18			840	126	252
DZW 150	70	285	240	200	8-φ22			960	150	300
DZW 200	70	340	295	256	12-φ22			1025	180	360
DZW 250	76	395	350	316	12-φ22			1203	205	410
DZW 300	83	445	400	366	12-φ22			1325	235	470
Pneumatic	QZW50	60	165	125	94	4-φ18		310	90		180
QZW80	64	200	160	126	8-φ18		368	112		223
QZW100	64	220	180	150	8-φ18		400	120		240
QZW125	59	240	210	177	8-φ18		508	126		252
QZW150	70	285	240	200	8-φ23		490	150		300
QZW200	70	340	295	256	12-φ23		580	180		360
QZW250	76	395	350	316	12-φ23		666	205		410
QZW300	83	400	400	366	12-φ23		740	235		470

Parameter boundary

Standard-model catalogue figures. Actual capacity, power draw and wear life shift with ore properties, feed gradation and circuit conditions. Use them to shortlist, then confirm the duty by testwork, flowsheet calculation and a written confirmation from the manufacturer.

What decides the selection

Before selecting a model, confirm the pipe diameter and the maximum system pressure, including surge or water hammer. Define the slurry’s solids concentration, particle size distribution, and pH to select the appropriate body lining and gate material. Also specify the end connection standard and whether the valve will be manual or actuated.

Design flow and head
Slurry density and particle size
Abrasiveness and corrosiveness
Net positive suction head
Pipeline resistance
Sealing arrangement
Wetted part material
Speed control method

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30+

years in mining equipment

1,000+

equipment models

70+

ore types processed

100+

countries reached

ISO 9001 / ISO 14001 / ISO 45001 / ISO 9712 / CE / CSA W47.1 / CNAS accredited laboratory

Send the duty, get a sized proposal

Tell us the ore, the throughput and the target product. Our process engineers come back with a flowsheet position, a model shortlist and the testwork we would need to confirm it.

Request a Quote Read the selection guide