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What is Steam trap

Steam trap is a valve that can automatically remove steam condensed water and non-condensable gases such as air in heating equipment or steam pipes, and does not leak steam.
The three important functions of steam traps are:
1.Discharge condensate as soon as it is formed (unless it is desirable to use the sensible heat of the liquid condensate)
2.Have a negligible steam consumption (i.e. being energy efficient)
3.Have the capability of discharging air and other non-condensable gases.
Steam traps are widely used in various industries such as petrochemicals, food and beverages, pharmaceuticals, textile printing and dyeing, electric power, tobacco, etc., and play a great role in energy saving and emission reduction.
No steam system is complete without that crucial component Steam Trap.
There are three types of steam trap,each type uses a different working principle to remove condensed water and non-condensable gases.
1. Mechanical steam trap
Mechanical steam traps rely on the density difference between steam and condensate to work. Mechanical steam traps are divided into inverted bucket steam trap and floating ball steam trap.
2. Thermostatic steam trap
The thermostatic steam trap relies on the temperature difference between steam and condensate to work. Thermostatic traps are divided into bimetallic steam traps andfilm box steam traps.
3. Thermodynamic steam trap
The thermodynamic steam trap relies on the difference of flow velocity between steam and condensate to work. 

Develop Online Business Opportunity

To business friends,
Due to the influence of COVID-19, the offline exhibition has been seriously affected, and it is difficult for most customers to travel. Offline exhibitions have been affected, and have been postponed, cancelled or restricted for foreign exhibitors, such as valve world and other well-known exhibitions.
In order to better carry out business cooperation in this epidemic situation, open up new markets and deepen customer cooperation and communication, and also facilitate new customers to understand the company to carry out cooperation. Zhejiang AIV Fluid Technology Co., Ltd. has launched online exhibition, video news, VR factory exploration, video conference and other activities, including industry news, enterprise news, factory scene, business negotiation, etc. Please contact the sales staff for details and application.
Please visit for more information.


Dear partners,

Thank you for your support and trust to ZHEJIANG AIV FLUID CONTROL CO.,LTD. AIV adheres to the spirit of service first and provides you
with the best service at the first time, winning the recognition of markets.

AIV is valve factory specialized in steam system, mainly in bellow valve, steam trap etc. Products available in DIN/ANSI standard. Regular material
range include CS, SS, special alloy. Regular size range from DN15 to DN400. Regular pressure range from PN16 to PN40. Due to the change of
material cost, labor cost and exchange rate, the cost of our products is increasing. AIV will have price adjustment in May 2021. For more details,

please contact with the sale team. Thank you for your support and trust. Our company will serve you wholeheartedly with high quality service as always.

Holiday Notice

The New Year holiday is coming, combined with the production task and work plan, we make the following holiday notice. Production system: 2.2-2.21, administration system: 2.6-2.19.
Please notice into your work plan. The warehouse of the company has some stock. Please contact the sales staff if you need. I wish you all a happy New Year!

Robot arm automatic production line leading to precision and efficiency

Zhejiang AIV Fluid Technology Co., Ltd. has introduced a new production line, which is equipped with automatic robot arm. It greatly improves the production accuracy and efficiency. The first group of equipment includes: four CNC lathes machine, four groups of automatic clamping tools, a group of mechanical arm, a group of raw materials and finished product conveyor belt. The first production line capacity is 24 sets per hour, processing size range from DN 15-50.
The production process is fully automated. Automatic replacement of raw materials, automatic operation of finishing procedures, full computer control, to avoid the deviation caused by manual errors, improve the processing accuracy of products. A group of assembly line can replace four ordinary lathes machines for finishing operation, which is controlled by computer and can be operated all day.
AIV will continue to invest in the upgrading of automation in all aspects of the production process to comprehensively improve the production capacity of the enterprise. The company's main services are valve casting and processing, specialized for the steam system, the main products are bellows valves, steam traps and so on.

Zhejiang AIV Fluid Technology Co.,Ltd. updated with new CE certificate

Zhejiang AIV Fluid Technology Co.,Ltd. updated with new CE certificate, according to the Pressure Equipment Directive 2014/68/EU Annex III, Module H.
After site visit and document reviewed by TUV officer, find out Newton is in standard management process, produce process and research process. TUV certification is a Technical
Inspection Association for the Europe valve market. It has special department for the valve and other pressure equipment. TUV originated from Steam Boiler Monitoring Association of Germany in 1872 and is the symbol of safety, reliability, and quality.
The Directive 2014 / 68 / EU Annex III Module H is highest level of the CE certificate.The scope of certification of Zhejiang AIV Fluid Technology Co.,Ltd including the products are
gate valves(Max.PN100,DN600),
ball valves(Max.PN100,DN500),
globe valves(Max.PN100,DN500),
check valves(Max.PN100,DN600),
The certificate NO. Is DGR-0036-QS-1346-20, valid until October 27th, 2023.
The main products of the Zhejiang AIV Fluid Technology Co., Ltd. contains bellow sealed valves, gate valve, globe valve, check valve, steam trap, strainers, safety valve, pressure reducing valve, steam separator and other valves for steam system, thermal oil system and general industry system. The main material covers A105, WCB, Stainless steel etc. The nominal diameter is from 1/2” to 24” (15mm~600mm) .The nominal pressure is from PN16-PN40(150lb~2500lb). Working temperature is between -196℃~600℃.