Detailed Product Description

Signal gate valve and signal butterfly valve are used in automatic spraying water pipeline in fire protection system to monitor the water supplying pipeline and can indicate the valve's opening in a long distance.Rising stem gate valve and opening indicator gate valve are often used in fire protection system,and if the installation position is high to the ground,rising stem gate valve is used and can show the valves opening clearly and if the installation position is low,opening indicator gate valve is used.
Material

No.	part	material
1	Transmission cap	ductile cast iron,cast steel
2	Handwheel	Ductile iron
3	Dust proof gasket	Plastic
4	Gasket	Buna-N rubber or EPDM
5	Thrust bearing	Gunmetals
6	Cover	Grey cast iron,ductile cast iron,cast steel
7	Bolt	Carbon steel or stainless steel
8	Body	Grey cast iron,ductile cast iron,cast steel
9	Copper nut	Gunmetals
10	Stem	Stainless steel
11	Disc	Ductile cast iron packed with rubber or EPDM outside

Main technic-al parameters

Nominal pressure: 1.0-2.5MPaWorking temp.:0-120Flanged end:GB/T17241.6 GB9113,ASME 16.5 etc..
Nominal diameter: 50-400mmService:water,oils,gas etc..Inspection and test:GB 13927 API 598

Main dimensions unit:mm

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600
L	178	190	203	229	254	267	292	330	356	381	406	432	457	508
H(full open)	732	773	820	870	915	1003	1110	1263	1360	1550	1610	1900	1938	2120