跳至主要内容

NAFCO | Definition and Structure of Brass Gate Valves

NAFCO | Definition and Structure of Brass Gate Valves
Time:2018-08-02 From: NAFCO | China Brass Gate Valves Manufacturer
Brass gate valves are one of the most commonly used plumbing valves for household application, just little smaller than brass ball valves. Brass gate valve is metal-metal sealed valve and are currently widely used in water supply systems. 
 
Today we're going to explain what is a brass gate valve, what's the structure of brass gate valves:
 
Brass Gate Valves China
 
1. Definition and of Brass Gate Valves
 
Brass gate valves, also called brass disc valves, are valves in which the closing valve disc moves in the vertical direction along the centerline of the passage, used to turn the media on or off.
 
The brass gate valve is a control unit that moves the gate plate along the axis of the channel in the vertical direction and shuts off the medium flow control unit through the handwheel rotation drive. The utility model has the advantages of small fluid resistance, small opening and closing torque, and unlimited medium flow direction. 
 
The brass gate valve has internal and external threads, flanges and welded joints. The shell and the gate plate adopt the constant temperature hot forging and tempering process, and the sealing surface is cut by Taiwan high-precision sealing surface special machine, and the "General Valve Pressure Test" standard. 100% pressure test before delivery.
 
2. Structure of Brass Gate Valve
Structure of brass gate valves
A. Brass gate valve body: main structure of the valve, used to hold pressure and end connections
B. Brass gate valve wedge disc: move upward and downward to open and close the flow, operated by hand-wheel
C. Brass gate valve stem, used to connect handwheel and the disc
D. Brass gate valve bonnet, used to seal the bonnet
E. Brass gate valve gasket, designed to seal the valve body and bonnet
F. Brass gate valve packing ring, used to fix the stem and keep it firm
G.Brass gate valve packing gland, used to seal the stem
H.Brass gate valve seat, used to seal the stem
I. Brass gate valve packing nut: fix the stem
J Brass gate valve handwheel: used to open and close the valve
 
 
3. Features of Brass Gate Valves
 
  1). Low fluid resistance
  2). No limit of flow direction 
  3). Less external force to open and close
  4). When fully open, less flow resistance than brass stop valves.
 
China brass gate valves
 
 
NAFCO is a quality manufacturer and supplier for brass valves Chinabrass ball valvesbrass gate valves,brass radiator valvesbrass angle valves, as well as relevant brass fittings. we supply kinds of brass valves and brass pipe fittings with reliable and stable quality, you are welcome to inquiry with us at sales@acrofluid.com.
 
 

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...

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...

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...