Two-piece knife gate valve KLP73X

Valves of this type should generally be installed horizontally in piping systems.

KLP73X

Keyword: Two-piece knife gate valve KLP73X

Category:

High-performance series

Two-piece knife gate valve

Email:

510146783@qq.com

Message

Product

Details

When a gate valve is closed, the sealing surfaces rely solely on the pressure of the medium to achieve a seal—specifically, the sealing surface of the gate is pressed against the valve seat on the opposite side by the medium’s pressure, thereby ensuring a tight seal. This type of sealing is known as self-sealing. By contrast, most gate valves employ forced sealing: when the valve is closed, an external force is used to press the gate against the valve seat, guaranteeing the sealing performance of the sealing surfaces. Such valves should be installed vertically in the pipeline.

Performance

1. The valve can be locally and remotely controlled according to user requirements, and can also provide remote and centralized display.

2. Lightweight: The valve body is made of carbon steel, making it approximately 20%–30% lighter than conventional gate valves, which facilitates installation and maintenance.

3. Using this type of valve can enhance the sealing performance of pipeline systems, minimizing leaks to the greatest extent possible, thereby playing a positive role in improving production efficiency and protecting the environment.

4. The sealing surface is designed with a highly wear-resistant and corrosion-resistant ceramic composite material, using an inlaid technology. This results in superior corrosion resistance and excellent wear resistance, significantly extending the service life of China’s valves and increasing their cost-effectiveness by a factor of 10 compared to conventional valves.

Two-piece:

The two-piece knife gate valve gets its name from the fact that its valve body is composed of two separate pieces.

1 The body of the two-piece knife gate valve adopts a symmetrical casting structure consisting of two halves. Compared to the older, one-piece knife gate valves, this valve body is thicker and boasts greater strength. Both the inner and outer surfaces of the valve body are entirely made of... CNC High-precision machining ensures higher overall accuracy, improved sealing in all aspects, greater resistance of the valve to media erosion, and a smoother, flatter, and more aesthetically pleasing appearance.

2 The valve body features a full-bore design, and its internal cavity is equipped with a rationally designed sloped guide and flushing port structure. This effectively enhances the smoothness of medium flow through the valve’s flow path and successfully addresses the drawbacks of earlier integrated knife-gate valves—such as medium jamming in the slot and inadequate sealing leading to leakage.

3 Its unique bidirectional sealing structure enables bidirectional pressure resistance without jamming, leakage, or being affected by erosion, significantly extending the valve’s service life and providing pressure-bearing capacity that exceeds standard specifications.

4 The two-piece knife gate valve is particularly well-suited for special operating conditions involving complex media such as slurry, slag, and mineral powder—media characterized by high erosive forces, stringent sealing requirements, harsh service environments, and extreme wear and corrosion resistance.

5 All of the above structures are protected by utility model patents and design patents. Please respect our company’s intellectual property rights and uphold innovation, integrity, and compliance with the law.

Product Model KLP 73X

Two-piece knife gate valve pressure testing standards —Mpa — For reference only
mouth path	Work intensity	Work seal	Measured strength	Measured seal
50 -200	2.0	1.5	3.0	2.4
250–350	1.6	1.1	2.5	2.0
400–600	1.2	1.0	2.0	1.5
700–800	1.0	0.8	1.5	1.0
900 - 1000	0.8	0.6	1.0	0.8
1200	0.6	0.4	0.8	0.6

Connection type: Flange-mounted

Design and manufacturing standards: GB/T 12234-2015, HG/T 3704-2016

Structural length standard: GB/T 12221-2005-J16, GB/T 15188.2

Flange connection standard: HG/T 20592-2009 (RF), GB/T 9124-2 019

Housing Test and Sealing Test Standards: GB/T 1392 7-2008

Valve body material: QT450-WCB-CF8-CF8M-2205-2507-Ti2-HC276

Gate material: 201-SS304-SS316L-2205-2507-Ti2-HC276

Valve seat material: NBR-EPDM-FPM-FKM

Filler material: Aramid -High-water-based - Tetrafluoro - Graphite - Rubber

1. The valve seat features an integral, thermally molded rubber sealing ring with a U-shaped structure; the density of this sealing ring is... Higher, with better resilience, and more resistant to abrasion, water, oil, and scouring.

2. The rubber valve seat is embedded in the valve cavity flow passage. , subjected to all-round action by the two valve bodies Package , making it More than 95% of the surface area is free from media erosion, truly extending the service life of the valve. and sealing performance.

3. The rubber sealing contact surface of the U-shaped valve seat is designed with a convex V-shaped joint. Structure, enabling it to come into contact with the medium or gate. The smaller valve area can effectively extend the service life of the valve seat and can... Effectively address high torque and thrust. Problems such as tight force and difficult opening and closing.

4. The sealing design of the valve seat rubber is an凹U-shaped structure, which increases the contact area with the gate. small — Better resilience · Lighter torque Stronger sealing, and a needle core can be added. Glue injection port, glue injection The mouth can repeatedly ensure that, after the rubber wears down later on, it can be sealed tightly through external force. Sealing compound repairs the rubber's seal.

5. An arc-shaped scraper structure is designed between the valve seat and the valve body. Using a PTFE seal can effectively scrape. Remove the medium adhering to the gate and extend the overall service life of the valve seat.

Valve installation is shown in the diagram.

Schematic diagram of required accessories for installation:

For blind hole installation, use the matching component: short external hexagonal bolt. *n Hexagon nut *n Flat washer or spring washer *n
Through-hole installation using matching components: long external hexagonal bolt *n Hexagon nut *n Flat washer or spring washer *n
Metal-wound gasket or rubber gasket *2 Each valve per piece
Torque wrench *2

Note: n the number of = For the number of bolt holes and bolt lengths, please consult our technical staff.