4 Inch Check Valve

Product Introduction

Product Description

A 4 in check valve is a valve that automatically prevents the backflow of fluid. The disc of the check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve disc will automatically close under the action of fluid pressure difference, gravity and other factors to prevent the fluid from flowing back.

Types of 4 in check valve

Swing Check Valves

Tilting Disk Check Valves

Wafer Check Valves

Disk Check Valves

Piston Check Valves

Ball Check Valves

Duo-Check Valves

Non-Slam Check Valves

Structural Features

1. The design and manufacture of check valve products are designed and manufactured according to GB/T 12235, with reliable sealing and excellent performance.

2. The sealing surface of the valve disc and valve seat is made of stellite cobalt-based hard alloy surfacing, which is wear-resistant, high-temperature resistant, has good scratch resistance and long service life.

3. Various piping flange standards and flange sealing surface types can be used to meet various engineering needs and user requirements.

4. The valve body has a complete variety of materials, and the packing and gasket are reasonably selected according to the actual working conditions or user requirements, which can be applied to various pressure, temperature and medium working conditions.

5. Check valves with different structural forms and connection forms can be manufactured according to user requirements, and used for various equipment.

Application

The valve body structure of the straight-through lift check valve adopts the valve body of the globe valve, and the valve disc moves up and down along the line in the channel. Straight-through lift check valves can generally only be installed in horizontal pipelines, while vertical lift check valves are generally installed in vertical pipelines. The products are widely used in pipelines of various working conditions such as petroleum, chemical, pharmaceutical, and electric power industries.

Production Range

Our factory has a complete variety of valve body materials, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions. Check valves with different structural forms and connection forms can be designed and manufactured according to user requirements, and used for various equipment. This valve is suitable for one-way opening and closing on medium pipelines such as water, steam, and petroleum products with a working temperature of ≤350 °C.

What are the requirements for the selection of 4 in check valve?

1. In order to prevent the backflow of the medium, check valves should be installed on the equipment, devices and pipelines;

2. The check valve is generally suitable for clean medium, not suitable for medium containing solid particles and high viscosity;

3. Generally, horizontal lift check valves should be used on horizontal pipes with a nominal diameter of 50mm;

4. Straight-through lift check valve can only be installed in horizontal pipelines;

5. For the pump inlet pipeline, the bottom valve should be selected. The bottom valve is generally only installed on the vertical pipeline of the pump inlet, and the medium flows from bottom to top;

4 in check valve model preparation method: such as H41H-16C in order

Additional number of check valve: HH micro-resistance slow-closing check valve, BH insulation check valve, HQ ball check valve;

(1) Check valve type: H stands for check valve;

(2) Check valve connection: 4 flanges, 6 welding, 7 wafers;

(3) Check valve form: 1 lift type, 2 vertical type, 4 swing type, 6 double flap type, 8 butterfly type;

(4) Check valve seal: B babbitt, F fluoroplastic, H stainless steel, M monel, X rubber, Y carbide, W direct processing;

(5) Check valve pressure: 16 pressure, 16 kg, PN1.6-25mpa, pound class 150LB-2500LB, Japanese class 5K-63K;

(6) Check valve material: Q ductile iron, C carbon steel, P-304, R-316, A titanium alloy, I chromium molybdenum steel;

FAQ

1. Can you produce the products according to my own drawings?

A: Yes, we can produce the products according to your drawings that will be most satisfy you.

2. Which price terms could accepted?

A: FOB, CIF all acceptable.

Q: Are you trading company or manufacturer ?

A: Our factory in KaiFeng and our export office in HangZhou.

Q: How long is your delivery time?

A: Generally 3-5 days. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: What is your terms of payment ?

A: 30% of total cost Deposit, 70% balance before shippment.