RRHX rising stem ductile iron soft seal gate valve is produced by introducing European high-tech rubber and valve manufacturing technology. It overcomes the defects of general gate valve such as poor sealing, elastic fatigue, rubber aging and rust. The elastic seat seal gate valve uses the compensation function of elastic deformation produced by elastic valve to achieve good sealing effect. The valve has the advantages of light switching, reliable sealing, and easy operation Good elastic memory and long service life. It can be widely used in tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, ship, metallurgy, energy system and other fluid pipelines as regulating and intercepting device.

1. Integral rubber coating: the valve adopts the whole rubber coating, its good covering performance and accurate geometric size ensure reliable sealing and long service life.  
2. Light weight: the valve body is made of nodular iron, light in weight and convenient in installation and maintenance.  
3. Flat bottom valve seat: the bottom adopts the same flat bottom valve seat design as the water pipe, which does not produce debris deposition, and the sealing is more reliable.  
4. Corrosion resistance: the inner cavity is coated with non-toxic epoxy resin to prevent corrosion and rust. It can be used not only for drinking, but also for sewage system.  
5. Three "O" ring sealing ring: because the valve rod adopts three "O" ring sealing ring, the friction resistance during closing can be reduced, the leakage phenomenon can be greatly reduced, and the sealing ring can be replaced without stopping water construction.

name	texture of material
Valve body	Gray cast iron, ductile iron, cast steel
Ram	Ductile iron + EPDM or NBR
Middle mouth pad	Nitrile rubber, EPDM
seal ring	Nitrile rubber
Bracket	Gray cast iron, ductile iron, cast steel
Stem	stainless steel
Bolt	stainless steel
Gland	Ductile iron and cast steel
Stem nut	copper alloy
Handwheel (driving cap)	malleable iron

Nominal pressure: 1.0 ~ 2.5MPa
Working temperature: 0 ～ 80 ℃
Flange standard: GB / T 17241.6 gb9113
Nominal diameter: 50-400mm
Applicable media: water, oil, gas, etc
Test standard: gb13927 ap1598

DN	50	65	80	100	125	150	200	250	300	350	400
L	178	190	203	229	254	267	292	330	356	381	406
H	322	332	350	420	581	581	736	882	1009	1300	1380
H1	374	398	429	524	721	736	942	1031	1117	1655	1805