Custom Flange Rubber Disc Soft Seal Swing Check Valve Supplier, Manufacturers

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Custom Flange Rubber Disc Soft Seal Swing Check Valve Supplier, Manufacturers

Type: Rubber flap type

Series: H44X-10/16

Size: DN40-DN300/2â€-12â€

Pressure rating: PN6/10/16

Design standard: DIN F6

Service: OEM&ODM

The rubber seat non return valve combines the high strength of ductile iron with the flexible sealing advantage of rubber flaps.

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Product Description

📋 Technical Specifications

Valve Type:	Swing check valve	Structure:	Rubber flap type
Standard:	DIN F6	Workmanship:	Investment casting
Sealing direction:	Single-directional	Sealing grade:	Zero leakage
Temperature:	-20°C < T < 120°C	Operation:	Self-starting

⚙️ Characteristics

Boasting a ductile iron body and an elastic rubber flap core, this automatic check valve operates without any external drives. It leverages forward medium thrust to open the rubber flap for smooth circulation, and relies on reverse medium pressure paired with the flap’s elastic reset force to deliver leak-proof sealing. The valve’s standout design merges the exceptional structural strength of ductile iron with the unrivaled flexible sealing advantages of rubber flaps, ensuring optimal performance in diverse low-pressure applications.

⭐ Key Advantages

Flexible seal, excellent leak proof performance

The valve disc is made of elastic rubber material and is in surface contact with the valve seat for sealing. It can automatically compensate for minor wear and deformation of the sealing surface and achieve a tight fit even under low pressure conditions, effectively avoiding medium leakage.

Simple structure, low failure rate

Without vulnerable moving parts such as hinges, springs, and shafts, traditional check valves avoid the problem of opening and closing failure caused by component rust, jamming, and fatigue fracture. The rubber valve disc is wear-resistant and anti-aging, reducing maintenance costs.

Easy installation and strong adaptability

The valve body is made of lightweight, high-strength ductile iron. The flange connection method supports various installation methods such as horizontal and vertical (bottom-up), suitable for urban water supply, sewage treatment, and irrigation.

📦 Packing & Delivery

Standard export wooden case packaging ensures the safety of the valves during international transportation.

🌐 Application Scenarios

This valve finds extensive application across diverse sectors including urban water supply and drainage networks, sewage treatment facilities, fire protection systems, HVAC installations, water treatment plants and farmland irrigation systems. It is recognized as a standard anti-backflow solution for civil construction and municipal engineering.

🏗️ Material Composition

Components Name	Material
Valve body / Valve cover	Cast iron, Ductile iron, Cast steel
Valve petal	Rubber Combination components
Spring	Stainless steel

📐 Dimensions

DN (mm)	L	D	D1	dn	n
50	203	165	125	17.5	4
65	216	185	145	17.5	4
80	241	200	160	17.5	8
100	292	220	180	17.5	8
150	356	285	240	22	8
200	495	340	295	22	8
250	622	395	350	22	12
300	698	445	400	22	12
350	787	505	460	22	16
400	914	565	515	22	16
450	978	615	565	26	20
500	978	670	620	26	20
600	1295	780	725	30	20

❓ Frequently Asked Questions

Q1: What makes the rubber flap swing check valve different from metal-seated valves? A: The rubber flap provides a flexible seal that can automatically compensate for minor wear or impurities, achieving zero leakage even under very low pressure conditions, whereas metal seats may require higher pressure to seal perfectly.

Q2: Can this valve be installed in a vertical position? A: Yes, it supports both horizontal and vertical (bottom-to-top flow) installation methods, making it highly adaptable to various pipeline layouts.

Q3: What is the maximum working temperature for this valve? A: This valve is designed to operate safely within a temperature range of -20°C to 120°C, suitable for most water supply and HVAC applications.

Q4: Is it suitable for handling sewage with particles? A: It is excellent for clean water and sewage. While it handles small impurities well due to the flexible rubber flap, it is best used in systems with non-particle or small-particle media.

Q5: Does the valve require regular maintenance for the internal parts? A: Because it lacks complex hinges and springs that often rust or jam, the maintenance frequency is significantly lower than traditional check valves. The rubber disc is highly wear-resistant.

Q6: What standards does the valve follow? A: This specific series is manufactured according to the DIN F6 standard, ensuring compatibility with standard industrial and municipal piping systems.