China Brass Gate Valves Suppliers, Manufacturers, Factory

Product Details

Brass Gate Valves

Material List:
Parts	Material
Body	High quality brass Cu≥58%;Pb≤2.8%; Fe≤0.8（≈HPb59-3）
Bonnet	High quality brass Cu≥58%;Pb≤2.8%; Fe≤0.8（≈HPb59-3）
Handwheel	HT200
Nameplate	Al
Pressure cap	High quality brass Cu≥58%;Pb≤2.8%; Fe≤0.8（≈HPb59-3）
sealing	PTFE
Screw rod	High quality brass Cu≥58%;Pb≤2.8%; Fe≤0.8（≈HPb59-3）
Disc	High quality brass Cu≥58%;Pb≤2.8%; Fe≤0.8（≈HPb59-3）

SIZE	A	B	C	D	E	F	WEIGHT(g)
DN15	13	G1/2	44	12.5	65	53	231
DN20	17	G3/4	49	14.5	67.5	53	306
DN25	22	G1	56	18	82	59	446
DN32	27	G11/4	59	17	100	71	656
DN40	33	G11/2	60	17	110	71	863
DN50	44	G2	68	17	129	77	1200
DN65	54	G21/2	76	19	162	98	2122
DN80	66	G3	80.5	19	192	106	3002
DN100	87	G4	95	21	228	126	4890

Contrastive items	Common products	Corporate Enforcement Standards
Brass Material	Ordinary brass, copper content (>57%)	Copper content (> 58%); elongation and mechanical property control
Molding process	Flame jet heating; die forging	Tunnel furnace temperature controlled heating, die forging temperature consistent
surface treatment	Ordinary sand blasting without heat treatment, uneven metallographic structure, late surface rust and cracking phenomenon	Stainless steel shot blasting, tempering treatment, controlling the uniform grain size of metallographic structure
Connecting thread	The error of tooth profile is large and there are burrs in thread in common tool processing.	Special Machine Tool, Standard Tooth Curve, Small Diameter Control, Medium Diameter Thread Routine Control, Smooth and Burr-free
Bending resistance	Reluctantly up to standard or not testing	1.5 times the requirement of national standard
Torsion resistance	Reluctantly up to standard or not testing	1.5 times the requirement of national standard
Withstand voltage	Reluctantly up to standard or not testing	In non-critical situations, long-term work under 1.5 times nominal pressure is allowed.
Quality Traceability and Guarantee	No traceability management, quality assurance for one year or no commitment	Batch traceability management, 5-year quality assurance.

Technical specifications：
	Norminal Pressure PN	Working Temperature	Media	Interface thread
	2.0Mpa	-20℃—170℃	water, oil, gas and steam	Thread of BS non-sealed pipe, thread code: G

Executive standard：
1. GB/T 8464-2008 Screw Connection Iron and Copper Valves
2. GB/T 7307-2001 55℃ unsealed pipe threads
3. Brand and chemical composition of copper and copper alloys processed by GB/T 5231-2012
4. GB/T 20078-2006 copper and copper alloy forgings
5. GB/T 13927-2008 Industrial Valve Pressure Test

"Cautions for Use and Installation

"

Before installation：

1. Valves are marked with specifications, nominal pressure and batch number on the shell or nameplate. Before installing the valve, check the pressure, medium and temperature of the pipeline system to ensure that the valve does not exceed the scope of use.

2. Valves can be used in the range of - 20-170 C with fluid medium. Over-range use will shorten the service life of valves and even lead to valve leakage.

3. Valve connection threads at both ends are standard British non-sealed pipe threads (G threads, GB/T7307), except those specially customized or marked. Please note the standard specification of pipe threads for connecting valves.

4. The medium through which the valve passes is a common liquid or gas without particulate impurities. It should not be used in flammable, explosive, toxic and corrosive situations. If this kind of occasion needs to be used, Kimber TS Certification Valve should be selected.

5. The liquid in the valve will cause damage or even rupture of the valve due to freezing at low temperature. In low temperature environment, thermal insulation measures must be taken to ensure that the medium is in a fluid state.

"Installation construction:

Before installation, the debris and sediment in the pipeline must be clear; filters must be installed at the upstream end of the valve. Valves should be installed vertically to avoid being used as control valves at the end of the pipeline.
The threads connecting the valves shall conform to the specifications. If the threads are too small and the threads are too deep, the valves will be damaged.
Use wrenches of suitable size to install, too large installation torque will damage the valve. The recommended installation torque (kg. m) should not exceed the following table:
Specifications 15 20 25 32 40 50
torque 7.5 10 12.5 16 20 25