Piston Plunger Automatic Emergency Quick Safety Pressure Relief Sustaining Holding Valve (GAX742)

Product Description

Globe Type Double Chambered
Safety Pressure Relief / Sustaining Valve
MODEL NO. : GAX742X

Product Description

Δ The KARFAR model GAX742X safety pressure relief / sustaining valve is popularly used in pipeline system of high-rise buildings, mining industry, pharmaceuticals and foodstuff industry etc. It quickly response & release in response to pressure wave. It prevents damage on the pipeline and equipment from rapid pressure increase. 

It is especially suitable for fireman system of high-rise buildings to release over pressure. It can also be installed behind reducing valves to maintain a safe and normal pressure. 
Δ It can maintain a precise stable safe pressure. In case of excessive pressure, the valve will be fully opened for pressure release; The closing speed is adjustable; The actuator Diaphragm/piston extremely minimizes the lagged operation; This valve can be mounted at any location in the same system without changing the preset pressure of the pilot; Maintenance and examination on the valve can be done without disassembling it from pipeline.

 Size:  DN50-DN800
Pressure Grade:  PN10  (Range of Adjustment 0.3-0.9Mpa)
                           PN16  (Range of Adjustment 0.5-1.4Mpa)
                           PN25  (Range of Adjustment 0.5-2.4Mpa)
                         We also can make high pressure rating to customer request. Please contact us to consult.
 

Product structure

 

Product Parameters

Medium applicable	Water, Oil etc.
Main material	Cast iron, Ductile iron, Carbon steel, Stainiless steel etc.
Temperature applicable	≤80ºC
Nominal Pressure	PN10--PN25
Nominal Diameter	DN50--DN800
Flange Dimension	ANSI B16.42, BS4504, ISO2531, ISO7005 and other standards
Face to Face Length	API594,BS5155, ISO5752, DIN3352 and other standards

Detailed Photos

Piston type (with disc position indicator):

Pressure relief valve collection:

Company Profile

Zhejiang Mencrown Valve Co., Ltd, old name Zhejiang Guanlong Machinery Valve CO Ltd, locates at Oubei Sanqiao Industrial Zone, Wenzhou city.

As a medium-sized professional valve manufacturer, our company dedicated to make all kinds of water supplying and drainage valves, mainly including check valves, water control valves, pump control valves, flow and pressure regulating valves, strainers, air release valves etc. We make all efforts on products research, design, production, sales, installation and other services. Besides standard products, we also design and make nonstandard valves according to drawings or samples from users. Our products are sold all over the country as well as other parts of the world like America, Africa, Middle East and Southeast Asia. Products are widely used in chemical industry, oil production industry, paper production industry, construction industry, fire protection sector, electric power industry and water engineering projects. Our products enjoy a good reputation and trust from users.

After nearly 30 years development and improvement, our company owns a serious of advanced processing and inspecting equipment. Products have innovative design, advanced structure and are made with outstanding workmanship. We passed and received ISO9001 certificate in 2003, TS Pressure pipe components manufacturing qualification in 2007, Pressure pipe components manufacturing qualification Grade A2 in 2015, and CE certificate in 2016. After the workshop expansion and reconstruction, our company upgraded with a new name MENCROWN in 2023. Running in a strict quality control system and a scientific enterprise management system, the company has achieved a higher level of product development, manufacture and testing.

'All for users, All from innovation' is our business philosophy. 'Men oriented, Glory shared' is our humanistic idea. With such an unique company culture background, we continuously improve competitiveness in the market and introduce original good products made by KARFAR to our users. We won't stop to pursue more practical attitude, better products and service.

Certifications

 

FAQ

1. Are you a trading company or factory? 

We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, CE certificate. We also have some patents in design. 

3. How do you control the quality? 
In quality control, problem may lie in every aspects, but the most important is to avoid leaking problem. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, Body strength test machine, Air test machine...All machines help in inspection. 
2 staff do water pressure testing  twice, before resin epoxy coating and after essembly. 
5 quality control staffs inspect the finished productions to avoid shortage, poor quality etc.

4. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 

5. How long is your delivery time? 
For normal products in 15 days; For bulk order, in 20-30 days. It depends. 

6. Warranty time? 
1 years warranty for all of our products. Gaskets or the easy broken parts are not included due to the different application for customers. 

7. Why trust in us? 
40 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 

8. What is the MOQ? 
1PCS MOQ is welcome for starting cooperatoon

9. Material certificate? 
Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us. 

10. More questions are appreciated.