China Valve Suppliers Factory - Good Price Valve Wholesale

Your Professional Valve Supplier

Our goal is to be your true partner in Valve field in China. Hangzhou Ruifeng Environmental Protection Technology Co., Ltd. is a diversified high-tech enterprise integrating research and development, manufacturing, sales and service. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

Check Valves
Check valves can be used for contaminated liquids and provide full protection even in heavy-duty work situations.. Ball check valves ensure that there is no obstruction of the flow path even at maximum opening, reducing the pressure loss
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Smart controller Cabinet
Plastic knife gate valve is tight and reliable, good sealing, vacuum system has also been widely used.. Plastic knife gate valve is easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90
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Why Choose Us

Our product
The company mainly deals in sewage pumps, integrated prefabricated pump stations, integrated sewage treatment equipment, catering oil-water separation equipment and integrated sewage lifting equipment. The products have superior performance, excellent quality and super high cost performance, and have obtained professional certification and praise from customers.

Professional service
Factory inspection, cargo inspection, technical discussion, new product development and perfect after-sales service can be accepted at any time.

Our certificate
Environmental management system certification, quality management system certification, occupational health and safety management system certification, design patent certificate, utility model patent certificate, etc.

Sales team
Well trained and experienced -quick response - smoothly communication - timely quotation - perfect solution.You will feel easy with us.

The Valve produced by our company mainly include the following types

Check Valves

Advantages of Check Valves

They can withstand high pressures without leaking or breaking. This means they can be used in high-pressure situations where other types of valves would fail due to excessive pressure.

Check valves can be used with any type of liquid or gas that flows through them. They do not require electricity in order to operate and do not require any special equipment such as pumps or compressors for operation.

The only moving part of a check valve is its ball valve which opens when there is an increase in pressure inside the pipe so that it can allow fluid through but closes when there is a decrease in pressure so that it does not allow any more fluid through it until it has time to adjust again and open again.

Applications of Check Valves

Water treatment systems

Check valves are extensively used in water treatment systems to prevent the backflow of contaminated water into the clean water supply.

Pumps and compressors

Check valves to prevent fluid that has already been pumped or compressed from flowing back through the system, which could damage the equipment.

HVAC systems

Check valves are used in HVAC systems to prevent the backflow of refrigerant and other fluids, which can cause damage to the equipment and increase costs.

Oil and gas industry

Check valves are important components of oil and gas pipelines, where they are used to prevent the backflow of oil or gas, which could create safety hazards and reduce the efficiency of the system.

Chemical and food processing

Check valves are used in chemical and food processing systems to maintain the flow of fluid in one direction and prevent cross-contamination between different fluids or processes.

Fire protection systems

Check valves are used in fire protection systems to ensure that water can only flow in one direction, from the water source towards the fire, preventing contamination of the fire suppression system.

Ordering Process

01/

Our technical team will provide technical support and make 3D drawings for customer confirmation.

02/

The raw materials will be cast or forged and processed into semi-finished products.

03/

Arrange the semi-finished products to enter the production line, and we will promptly support the order manufacturing process during the production process.

04/

Assemble the parts and perform pressure sealing test on the valves, and our sales team will provide internal inspection reports according to customer requirements.

05/

Pack the valves into inner and outer boxes.

06/

Deliver and track all order deliveries and update customers with the latest status. All documents should be mailed to customers within 2 working days before shipment.

Product Description

Standard	API, GB, DIN, BS, JIS
Certificates	CE ISO9001:2015
Working pressure	1000 psi for W.O.G.
Temperature range	-60 to 450 °F
Material of construction	Investment casting
Design	Full port/reduced port/standard port
Driving Mode	Manual/Pneumatic/Electric
Size Range	1/4" (DN8) - 2" (DN50)
Ball Options	Lport/Tport
End Connection	Socket Weld or Threaded: NPT, Bsp, BSPT etc
Material	SS304/SS316 and According to the following parameter table or customized according to customer requirements
Gasket Sealing	PTFE
O-Ring	Tailored to customer requirements
Function	Blow-Down Valve, Relief Valve, Atmospheric Valve, Bypass-Valve
Application	Industrial Usage, Water Industrial Usage, Household Usage, Milk, Beer, Juice, Phramacy
Special Design	Available
Customized Size	Available
Warranty	1 year
Package	Cartons, pallet, cases
Production period	In 15-60 days upon order quantity
Payment term	LC, T/T, Western Union, Small-amount payment
Certificate	ISO14001,ISO9001,ASME,CCC,CE

Delivery

Selling Units	Single item
Single package size	25X30X30 cm
Single gross weight	4.000 kg

Lead Time

Quantity (pieces)	1 - 20	> 20
Lead time (days)	15	To be negotiated

Packaging & Shipping

Packing Details	Inner Package: Bubble bags + plastic cover Outer Package: Plywoodcase
Delivery Details	Generally it is 5-10 days if the goods are in stock. Or 30~45 days after receiving the payment.

productcate-1039-349

Plastic Knife Gate Valve

Advantages of Plastic Knife Gate Valve

Durability

Plastic materials like PVC or CPVC are resistant to corrosion and can withstand abrasive materials, making them suitable for harsh environments.

Low maintenance

The simple design of knife gate valves leads to easy operation and minimal maintenance needs.

Cost-effective

They are generally inexpensive to produce and operate, offering a cost-effective solution for various applications.

Effective in tough conditions

They are designed to handle high solid content and viscous media without clogging, making them suitable for slurry and wastewater applications.

Full bore flow

Knife gate valves provide a full bore opening, allowing for unrestricted flow and minimal pressure drop.

Easy actuation

They are easy to actuate mechanically, electrically, or pneumatically.

Applications of Plastic Knife Gate Valve

Mining, coal washing, and steel industry

Used in coal washing pipelines, slag slurry pipelines, and ash discharge pipelines.

Purification systems

Used for wastewater, sludge, waste, and clarified water containing suspended solids.

Pulp and paper industry

Suitable for any concentration of pulp and material-water mixtures.

Power plant ash removal

Used for ash slurry.

Product Description

Iteam	Plastic Knife Gate Valve
Size	1-1/4'' to 6''
Standard	ANSI,DIN,BS
Material	UPVC
Working Pressure	0.35Mpa
Usage	Widely Used in Agricultural irrigation
Mass Production Time	15-30 Working Days
Payment Term	TT. Trade Assurance.Paypal,Alibaba Trade Assurance

Specification & Material

Size (mm)	Valve Body Material	Handle Material	Seal Material
40 / 50 / 63 / 75	ABS	PVC	EPDM
90 / 110	202C2-13 Steel	Aluminum Alloy	EPDM
160	PVC	Aluminum Alloy	EPDM

Dimension

Size	DN	A	B	Φ
mm（inch）	DN	A	B	DIN	ANSI	BS
40mm（1-1/4‘’）	32	143	115	40	42.16	42.16
50mm（1-1/2‘’）	40	173	136	50	48.26	48.26
63mm（2‘’）	50	206	163	63	60.32	60.32
75mm（2-1/2‘’）	65	242	190	75	73.02	75.02
90mm（3‘’）	80	312	222	90	88.9	88.09
110mm（4‘’）	100	350	260	110	114.3	114.3
160mm（6‘’）	150	510	380	160	168.28	168.28

Delivery

Packaging Details	Box packing with bulb bag wrapping.
Selling units	Single item
Single package size	30X20X70 cm
Single gross weight	4.250 kg

Lead Time

Quantity (pieces)	1 - 10	> 10
Lead time (days)	15	To be negotiated

Packaging & Shipping

productcate-675-248

About Packing
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

productcate-676-144

FAQ

Q: Can we mark our logo on the product?

A: Yes, you can choose inkjet marking or laser marking.

Q: What is your packing?

A: Woven bags/Wooden boxes/Wooden reel/Iron reel and other packaging methods.

Q: What inspections will be done before the product is shipped?

A: In addition to routine surface and dimensional inspections, we will also perform non-destructive testing such as PT, UT, PMI.

Q: What is your minimum order quantity (MOQ)?

A: Different products have different minimum order quantities, you can consult for details.

Q: How long is the delivery time?

A: In stock: 7-15 days. We also support non-standard customization. If it is a customized product, the delivery time will be determined according to the product category.

Q: How long is your delivery time?

A: General speaking, we have some stock for regular products, it is 1~2 weeks if the goods are in stock; if not in stock will be 4~8 weeks, depends on quantity.

We're well-known as one of the leading valve suppliers in China. If you're going to wholesale high quality valve, welcome to get quotation from our factory. For price consultation, contact us.

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