跳至主要内容

NAFCO | Quality Test for China Brass Ball Valves

Good quality comes from strict traceable process control, as well as professional tests during production and before delivery.

To meet the standard and quality requirements, NAFCO has been making every and best efforts to control quality of brass ball valves, we're pleased to share the quality tests for brass ball valves.

General tests for inspection of finished brass ball valves
1. Thread conformance and length
2. Leakage Test (Air pressure 6-8kgf/cm2=6-8 Bar)
3. Weights and operating smoothness
4. Handle angle and finishing
5. Dimensions of brass ball valve
China brass gas ball valves manufacturers
 
Type tests made in lab for picked samples
6. Openning torque
7. Operating torque
8 Torque test
9. Bending test
10 Endurance test
11. High-low temperature test
12. Angular seal tests
Brass Gas Ball Valve N10112001

As a professional China brass ball valve manufacturer and supplier, NAFCO is applying most intensive inspections and tests for brass ball valves we made.

Our best seller brass ball valves at http://www.acrofluid.com/Valves/Brass-Ball-Valves/Gas-Ball-Valves/Brass-Gas-Ball-Valve-N10112001.html

And you're always welcome to contact us for any questions or inquiry you have.

评论

发表评论

此博客中的热门博文

OEM Brass Union Fittings for Gas Meter

OEM Brass Fittings with Union for Gas Meter From: NAFCO | OEM Brass Fittings China Manufacturer OEM produced forged brass fittings for gas meters, single-union and double-union design, sizes M20x1.5, 1/2". 1.Single-Union Brass Fittings for Gas Meters 2.Double-Union Brass Fittings for Gas Meters 2. Front View of  Single-Union Brass Fittings for Gas Meters 3. Top View of  Single-Union Brass Fittings for Gas Meters 4. Back View of  Single-Union Brass Fittings for Gas Meters 5. Buttom View of  Single-Union Brass Fittings for Gas Meters 6. Dis-assembly View of  Single-Union Brass Fittings for Gas Meters NAFCO is a professional OEM/ODM  brass fittings manufactuer and export, we can produce according to customers' drawing or samples.  Mainly focused on OEM brass fittings and brass valves, whatever requirements or idea, we can make it true for you. --------- The End ---------- This article is presented by  N...
发表评论
阅读全文

NAFCO | Brass Gate Valve Installation

NAFCO | Brass Gate Valve Installation From: NAFCO | China Brass Valves Manufacturer 1. The installation of the gate valve must be carried out by qualified operators. The deviation of the different axial directions of the two ends of the pipeline must not be too large, otherwise excessive pipeline installation stress will be generated, resulting in failure and damage. The thread precision and effective length strictly enforce the ISO228-1 relevant standards.    When installing the screw, the hex or octagonal part of the same side of the thread should be clamped. The hexagonal or octagonal part of the other end of the valve should not be wrenched to avoid deformation of the valve. It must be made of Teflon tape or thread sealant seal.     2. To install the tightening valve, you must use the corresponding torque wrench or pipe wrench, and screw in the effective thread length. Do not excessively cause the inner end surface to be pressed, causing the s...
发表评论
阅读全文

NAFCO | Torque Test of Brass Ball Valves

NAFCO | Torque Test of Brass Ball Valves Time:2018-08-09 From: NAFCO | Brass Valves China Manufacturer The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. Tests shall be carried out in the sequence of this standard on the same brass ball valve. All tests shall be carried out with cold water of (20 ± 5) °C. The brass ball valve shall not be leaking or broken during the test, failing which the ball valve is not qualitified. 1.1.1 General Hold the ball valve in a rigid fixture as shown in Figure 1. a) All tests shall be carried out with connections to the valves (whatever their end fitting configurations) which are capable of withstanding the required torque values and bending moments (according to Table 1); b) if the inlet and outlet connection are not on a common axis, the torque tests shall be repeated with the connections reversed; c) ensure that the bending and torsional moments ca...
发表评论
阅读全文