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Sludge Valve, Angle Type Quick Opening Sludge Valve, Flanged Cast Iron Valve for Sewage Treatment Pipeline

Sludge Valve, Angle Type Quick Opening Sludge Valve, Flanged Cast Iron Valve for Sewage Treatment Pipeline

The Type JM Diaphragm Quick-Opening Blowdown Valve (referred to as the
Blowdown Valve for short) is an angle-type shut-off valve actuated by a hydraulic or
pneumatic power source.

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Product Description

Usage Scenarios

It is usually installed in rows on the outer side wall at the bottom of sedimentation

tanks to discharge sludge and contaminants deposited at the tank bottom. The

valve uses a nylon-reinforced rubber diaphragm to divide the valve body into two

chambers. Connected to a hydraulic or pneumatic power source, it is controlled by

an electric or manual 2/4-way directional control valve to achieve quick blowdown.

The pneumatic quick-opening blowdown valve adopts a diaphragm instead of a

piston, which eliminates motion friction. It is more suitable for particle-containing

media such as sludge, thus greatly extending the service life of the valve.

Features

1.It adopts a double-chamber diaphragm actuator for flexible opening and closing.

2.Nomotionwear occurs; it will not leak water due toimpurities, is notsensitive to sediment accumulation.

requires no lubrication, and causes no mechanical wear.

3.It features low driving medium pressure, and can be centrally controlled by a manual directional valve or

an electromagnetic 4-way directional valve for easy operation.

4.lt is durable with a long service life..

Table 1:Technical Parameters Table

PN

1.0MPa

1.6MPa

2.5MPa

Body Test

1.5MPa

2.4MPa

3.75MPa

Seal Test

1.1MPa

1.76MPa

2.75MPa

Temperature

0℃-80℃

Actuation Method

Pneumatic,Hydraulic,Electric

Multiple Models Available

JM644X、JM744X、JM944X

Table 2:Main Component Materials

Part Name

Materials

Body,Middle Bonnet,Bonnet

Ductile Iron/Cast Steel/Stainless Steel

Diaphragm

NBR/EPDM+Nylon

Bushing

Copper Alloy/Stainless Steel

Sealing Ring

NBR/EPDM

Stem

Stainless Steel

Fasteners

Carbon Steel/Stainless Steel

External Connecting Pipe

Copper Alloy/Stainless Steel/PU

Table3:Overal Dimensions mm
DN	φD			φK			N-Q			L1	L2
	PN10	PN16	PN25	PN10	PN16	PN25	PN10	PN16	PN25
100	220		235	180		190	8-Φ19(18)		8-φ23(22)	146	130
150	285		300	240		250	8-φ23(22)		8-Φ28(26)	190	164
200	340		360	295		310	8-φ23(22)	12-φ23(22)	12-φ28(26)	220	200
250	395	405	425	350	355	370	12-φ23(22)	12-28(26)	12-Φ31(30)	260	220
300	445	460	485	400	410	430	12-φ23(22)	12-φ28(26)	16-Φ31(30)	280	260
350	505	520	555	460	470	490	16-φ23(22)	16-28(26)	16-Φ34(33)	315	300
400	565	580	620	515	525	550	16-928(26)	16-931(30)	16-φ37(36)	340	240

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.

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