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National Standard Clip On Spy Valve

The national standard clamp butterfly valve is a centerline butterfly valve that complies with the Chinese national standard (GB). It is fixed between pipelines through clamp flanges, and the valve body and sealing surface are made of rubber or PTFE material. It is suitable for low-pressure, room temperature water, gas and other media, and has the characteristics of compact structure, reliable sealing, and convenient installation. It is widely used in general industrial fields such as water supply and drainage, HVAC, etc.

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Multi condition adaptability
Low cost maintenance and long lifespan
Quick opening and closing with precise adjustment
Low flow resistance and high flow capacity
Bidirectional sealing performance
Compact structural design

Multi condition adaptability

Multi condition adaptability
01
Applicable temperature range -20 ℃~+80 ℃, pressure rating ≤ PN16, covering conventional industrial scenarios such as water supply and drainage, HVAC, etc;
02
Adapt to acidic, alkaline liquids, steam and other media by replacing soft sealing materials such as nitrile rubber and fluororubber.

Low cost maintenance and long lifespan

Low cost maintenance and long lifespan
01
The sealing components can be independently replaced, and there is no need to disassemble the valve body during maintenance, significantly reducing downtime;
02
The valve body is made of ductile iron or cast steel material, and the rubber/plastic lined valve seat is wear-resistant and weakly corrosion-resistant, extending its service life.

Quick opening and closing with precise adjustment

Quick opening and closing with precise adjustment
01
Rotate 90 ° to complete full open/full close operation, support pneumatic or electric drive, response time ≤ 5 seconds;
02
The flow characteristics are close to linear, and fine flow control can be achieved by adjusting the butterfly plate opening.

Low flow resistance and high flow capacity

Low flow resistance and high flow capacity
01
Full bore flow channel design, with butterfly plate thickness as the only flow resistance source, resulting in low pressure drop when the medium passes through and better flow capacity than gate valves;
02
Suitable for high flow transportation of low viscosity media such as water and gas, especially for gas flow regulation in the sulfur based sulfuric acid industry.

Bidirectional sealing performance

Bidirectional sealing performance
01
Rubber or PTFE soft sealed valve seats achieve bi-directional compression sealing, meeting the requirements of bi-directional flow of media, and the leakage rate under low pressure meets GB standards;
02
Elastic sealing rings can compensate for slight deformation and maintain sealing reliability even under frequent opening and closing conditions.

Compact structural design

Compact structural design
01
Adopting valve body clamp installation, without the need for traditional flange structure, it is directly fixed between pipeline flanges through double headed bolts, saving space and suitable for narrow working conditions;
02
Short structure steel plate welded valve body combined with centerline butterfly plate, with small volume and light weight, reduces transportation and installation difficulty.

Main Component Materials

Part Name	material
valve body	Cast iron, stainless steel, chromium molybdenum steel, alloy steel
butterfly valve disc	Cast steel, alloy steel, stainless steel, chromium molybdenum steel
sealing ring	Combination of stainless steel and high-temperature resistant asbestos board into multiple layers
valve stem	2Cr13, 1Cr13 stainless steel, chromium molybdenum steel
bearing	Austenitic stainless steel, 304 nitriding
filler	flexible graphite

Performance Specifications & Dimensions

Nominal pressure PN

0.6/1.0/1.6/2.5/4.0/6.4
Shell F

P x 1.5
Sealing Pressure

P x 1.1
Medium

Air, water, steam, coal gas, oil products, as well as acids, alkalis, salts with weak corrosive media, etc
Temperature (℃)

Carbon steel: -29 ℃~425 ℃/Stainless steel: -40 ℃~600 ℃

Nominal Diameter DN(mm)	Main dimensions				PNO.6MPa			PN1.0MPa			PN1.6MPa
Nominal Diameter DN(mm)	L1	L2	H	H1	D1	D2	Z-Φ(M)d	D1	D2	Z-Φ(M)d	D1	D2	Z-Φ(M)d
D373H/F、D673H/F、D973H/F
50	43	43	272	200	110	90	4-14	125	102	4-18	125	102	4-18
65	46	46	335	225	130	110	4-14	145	122	4-18	145	122	4-18
80	49	64	355	240	150	128	4-18	160	138	4-18	160	138	4-18
100	56	64	385	255	170	148	4-18	180	158	4-18	180	158	4-18
125	64	70	455	305	200	178	4-18	210	188	4-18	210	188	4-18
150	70	76	490	325	225	202	4-18	240	212	4-22	240	212	4-22
200	71	89	590	380	280	258	4-18	295	268	4-22	295	268	4-22
250	76	114	655	410	335	312	4-18	350	320	4-22	355	320	4-26
300	83	114	740	460	395	365	4-22	400	370	4-22	410	378	4-26
350	92	127	840	525	445	415	4-22	460	430	4-M20	470	438	4-M24
400	102	140	890	545	495	465	4-M20	515	482	4-M24	525	490	4-M27
450	114	152	1010	630	550	520	4-M20	565	532	4-M24	585	550	4-M27
500	127	152	1065	650	600	570	4-M20	620	585	4-M24	650	610	4-M30
600	154	178	1140	680	705	670	4-M24	725	685	4-M27	770	725	4-M33
700	165	229	1268	780	810	775	4-M24	840	800	4-M27	840	795	4-M33
800	190	241	1432	860	920	880	4-M27	950	905	4-M30	950	900	4-M36
900	203	241	1528	900	1020	980	4-M27	1050	1005	4-M30	1050	1000	4-M36
1000	216	300	1698	1000	1120	1080	4-M27	1160	1110	4-M33	1170	1115	4-M39
1200	254	360	1910	1100	1340	1295	4-M30	1380	1330	4-M36	1390	1330	4-M45
1400	279	390	2140	1200	1560	1510	4-M33	1590	1535	4-M39	1590	1530	4-M45
1600	318	440	2420	1330	1760	1710	4-M33	1820	1760	4-M45	1820	1750	4-M52

Note: The pressure range is 0.6MPa~6.4MPa. The above data is for reference only. Please consult the company's sales department for details.

Valve Application

Oil & Gas Transportation

Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
Chemical Raw Material Control

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High Temperature SteamPipeline in Power System

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Other Industries

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.

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