2 Butterfly valves in pipe network series

2.1 Specifications

• Nominal diameter: ?DN 500-6000 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6, 2.5MPa
• Applicable medium: ?River water
• Installation method: ?Horizontal or vertical layout
• Sealing form: ?Rubber sealing, metal sealing
• Drive mode: ?Manual, electric, hydraulic
• Shell test pressure: ?1.5 PN
• Leak test pressure: ?1.1 PN

2.2 Application

It is installedat the water delivery pipe network system at the lower water head, functioning to connect or cut the pipeline medium.

2.3 Applicable working conditions

1. It is installedin the pipe network system as connection and block valves of the pipe network medium.
2. It is installed in the pipe network system as a switching valve between the pipes.
3. It is installed in the pipe network system as a service valve for other pipe network system equipment.

2.4 Introduction of products

The butterfly valves in pipe network series are the leading products of our company. The design, manufacture and acceptance comply with the relevant national standards and relevant international standards.

2.5 Features and advantages of products

Advancesoftware developed by internationally recognizable companies is adopted for auxiliary design and fluid analysis, CNC machine tools and other professional equipment are adopted in the key manufacturing processes, and the working conditions are simulated for product inspection and test.

3 Hydraulic-control slowly-closing butterfly check valves

3.1 Specifications

• Nominal diameter: ?DN 500-4000 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6, 2.5MPa
• Applicable medium: ?River water
• Installation method: ?Horizontal layout
• Shell test pressure: ?1.5 PN
• Leak test pressure: ?1.1 PN
• Opening valve time: ?30-120 s
• Closing valve time: ?Quickly-closing time: Adjustable in 3-30 s,Quickly-closing angle:65±10°

Slowly-closing time:?Adjustable in 5-90 s,Slowly-closing angle:25±10°

3.2 Application

1. It is installed at the outlet of the pump to prevent the back flow of the medium.
2. It is controlled interlocking with the pump, and can be closed in two stages according to pre-adjusted procedures, which can effectively stop the pump-stopping water hammer.

3.3 Applicable working conditions

It is ?installed at the pump outlet as block valve and slowly-closing check valve.

3.4 Introduction of products

It is a hydraulic-control slow-closing butterfly check valve with two-stage valve closing features independently researched and developed by our company, which can be divided into energy storage tank type and heavy punch type according to the power source to close the valves, and the national patent has been applied for such two types of products.

3.5 Features and advantages of products

It has dual-purpose applications of check valve and service valve. Dual exocentric rubber seal structure or triple eccentric metal hard seal structure is adopted for the primary seal; dual-compensative sediment resistant patent technology is adopted for the shaft end seal; the hydraulic system is safe and reliable, and PLC system has a high automatic degree.

4 Gate valves in pipe network series

4.1 Specifications

• Nominal diameter: ?DN 100-2000 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6, 2.5MPa
• Applicable medium: ?River water
• Structural type: ?Rising stem type and non-rising stem type
• Sealing form: ?Rubber sealing, metal sealing
• Drive mode: ?Manual/electric
• Shell test pressure: ?1.5 PN
• Leak test pressure: ?1.1 PN

4.2 Application

It is ?installed at the water delivery pipe network system, functioning to connect or cut the pipeline medium.

4.3 Applicable working conditions

1. It is installed in the pipe network system as connection and block valves of the pipe network medium.
2. It is installed in the pipe network system as a switching valve between the pipes.
3. It is installed in the pipe network system as a service valve for other pipe network system equipment.

4.4 Introduction of products

The gate valves in pipe network series are the leading products of our company. The design, manufacture and acceptance comply with the relevant national standards and relevant international standards.

4.5 Features and advantages of products

Advance software developed by internationally recognizable companies is adopted for auxiliary design and fluid analysis, CNC machine tools and other professional equipment are adopted in the key manufacturing processes, and the working conditions are simulated for product inspection and test.

5 Butterfly check valves, slowly-closing butterfly check valves

5.1 Specifications

• Nominal diameter: ?DN 100-1500 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6MPa
• Applicable medium: ?River water
• Installation method: ?Horizontal type
• Shell test pressure: ?1.5 PN
• Leak test pressure: ?1.1 PN

5.2 Application

The slow-closing check valve is set at the outlet of the pump to prevent the back flow of the medium, which can also restrain the water hammer.

5.3 Applicable working conditions

It is ?installed at the pump outlet as block valve and check valve.

5.4 Introduction of products

The valves are the leading products of our company. The design, manufacture and acceptance of butterfly valves comply with the relevant national standards and relevant international standards.

5.5 Features and advantages of products

The opening and closing of butterfly check valves are mainly powered by the impact force of medium water. Slowly-closing butterfly check valves are set with slowly-closing oil cylinder, which extends the valve closing time, and can effectively restrain the pump-stopping water hammer when closing the valve.

6 Floating-ball high-speed rotational flow water blocking suction and exhaust valves

6.1 Specifications

• Nominal diameter: ?DN 50-250 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6MPa
• Sealing form: ?Rubber sealing
• Shell test pressure: ?1.5 PN
• Leak test pressure:1.1 PN

6.2 Application

It is ?installed at the high point of water transportation and distribution pipes and can automatically supply air or exhaust air for the pipe according to different working conditions to protect the water transportation and distribution pipes.

6.3 Applicable working conditions

It is ?installed at the pipe network system to automatically supply air or exhaust air for the pipe.

6.4 Introduction of products

In floating-ball high-speed rotational flow water blocking suction and exhaust valves, the thin stainless steel floating ball can float up or down with the liquid level of the ball bowl to block or release the sealing mouth of the ball bowl, so as to enable the automatic air supply or air exhaustion.

6.5 Features and advantages of products

Due to structural limit of floating ball, the floating-ball high-speed rotational flow water blocking suction and exhaust valves are generally applied in the pipe system with nominal pressure not more than 1.6MPa and the nominal diameter of suction and exhaust valve should not larger than 250mm.

7 Floating-barrel high-speed rotational flow water blocking suction and exhaust valves

7.1 Specifications

• Nominal diameter: ?DN 50-1000 mm
• Nominal pressure: ?PN 0.6, 1.0, 1.6, 2.5, 4.0MPa
• Sealing form: ?Metal hard seal
• Shell test pressure: ?1.5 PN
• Leak test pressure: ?1.1 PN

7.2 Application

It is ?installed at the high point of water transportation and distribution pipes and can automatically supply air or exhaust air for the pipe according to different working conditions to protect the water transportation and distribution pipes.

7.3 Applicable working conditions

It is ?installed at the pipe network system to automatically supply air or exhaust air for the pipe.

7.4 Introduction of products

In floating-barrel high-speed rotational flow water blocking suction and exhaust valves, the opening cylindrical floating barrel can float up or down with the liquid level in the valve to block or release the seal valve seat, so as to enable the automatic air supply or air exhaustion.

7.5 Features and advantages of products

For the opening structure of floating-barrel high-speed rotational flow water blocking suction and exhaust valves, the nominal diameter of suction and exhaust valves can reach DN1000mm and the nominal pressure can reach 16MPa.