Micro-resistance slow-closing check valve

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Micro-resistance Slow-closing Check Valve

Supports customization. This product is an eccentric flange connection micro-resistance slow-closing butterfly check valve developed by our company, mainly used in industries such as petroleum, chemical, food, pharmaceutical, textile, papermaking, water supply and drainage, metallurgy, and energy, serving as a one-way valve to prevent medium backflow and destructive water hammer.

Email: official@zzvalves.com

Can be customized according to your needs.

Product Introduction

The double eccentric flange connection micro-resistance slow-closing butterfly check valve developed and produced by our company is mainly used in industries such as petroleum, chemical, food, pharmaceutical, textile, papermaking, water supply and drainage, metallurgy, and energy. It serves as a one-way valve to prevent medium backflow and destructive water hammer, and can be customized according to different requirements.

Performance Specifications

Nominal Diameter DN		200-1400			mm
Nominal Pressure PN		0.6MPa	1.0MPa	1.6MPa	MPa
Test Pressure	Body	0.9MPa	1.5MPa	2.4MPa
	Seal	0.66MPa	1.1MPa	1.76MPa
Applicable Temperature		Hard seal 0~350°C, soft seal 0~80°C
Applicable Medium		Fresh water, sewage, seawater, air, food, medicine, various oils, weak acids

Product Features

1. Small size, light weight, compact structure, easy maintenance.

2. The slow-closing device has a novel design, compact and reasonable structure, stable and reliable performance, and is located outside the pipeline to avoid contaminating the medium.

3. Smooth operation, no vibration, no noise.

4. Adopts double eccentric structure, with optimized structural parameters to effectively reduce flow resistance and vibration, thereby significantly reducing the destructive impact of water hammer on the pipeline system.

5. Achieves complete sealing with no leakage.

6. Good opening and closing characteristics, valve opening pressure <0.08MPa, quick opening, and the valve closing uses an adjustable two-stage fast and slow closing method. The slow-closing time adjustment range is large and can be adapted to different working conditions.

Product Compliance Standards

Flange connections comply with GB/T 9113-2010, EN 1092-1:2001, DIN 2501, ANSI B16.5, API 605 and other standards.

Structural length complies with GB/T 12221-2005 "Metal Valve Structural Length" for double flange connection butterfly valve long series dimensions.

Main Component Materials

Number	Number	Material	Serial Number	Number	Material
1	Buffer Cylinder	Stainless Steel 2Cr13	6	Ordinary Flat Key	Carbon Steel 45#
2	Valve Body	Carbon Steel WCB, Q235	7	Rocker Arm	Carbon Steel WCB
3	Butterfly Plate	Carbon Steel WCB, Q235	8	Valve Core	Stainless Steel 2Cr13
4	Valve Plate Seal	Stainless Steel, NBR	9	Lever Bolt	Stainless Steel 2Cr13
5	Valve Body Seal	Stainless Steel 1Cr18Ni9Ti	10	Adjusting Plate	Carbon Steel WCB