Non rising stem metal seat gate valve

The non‑rising‑stem hard‑seal gate valve serves as a pipeline on‑off valve. Its built‑in stem never extends out of the valve body to save installation space, which makes it suitable for valve pits and underground pipelines. The valve body is made of high‑quality ductile iron. Its wear‑resistant sealing structure delivers reliable tight‑off. The straight‑through passage brings low flow resistance and permits bidirectional medium flow. Custom‑made materials are available for accessories. A manual reduction gearbox or electric actuator can be fitted on the top. It is widely applied in municipal water supply, sewage and pump‑station water pipelines and only used for pipeline opening and shutting‑off.
  • Detail
  • Parameters

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The non‑rising‑stem hard‑sealed gate valve is a common shut‑off valve for underground water supply and drainage pipe‑networks. Its

stem is housed inside the valve body and does not lift upward during opening and closing. This fits the confined space of underground

valve pits and avoids corrosion and impact damage to an exposed stem.

The main housing is cast from high‑toughness ductile iron to withstand pressure from the overlying underground soil. The wedge is

equipped with a composite hard‑sealed surface that maintains tight sealing after long‑term scouring by water flow. The full‑bore inner

cavity allows unobstructed water passage, so the valve may be installed without regard to fluid direction.Internal component materials

are replaceable to suit demanding working‑conditions such as sewage and high‑temperature water sources.

A mounting base on the valve top accommodates manual gearing or electric drive units for local operation and remote automatic‑

control.

The valve is designed exclusively for pipeline opening and closing and is not suitable for adjusting water‑flow capacity.

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DIMENSIONS (mm)


DNDIN3352‑LBS5163‑LDFSCBx‑n
F4F51.0Mpa1.6Mpa1.0Mpa1.6Mpa1.0Mpa1.6Mpa1.0Mpa1.6Mpa
50150250178165125991934‑19
651702701901851451181934‑19
801802802032001601321938‑19
1001903002292201801561938‑19
1252003252542502101841938‑19
1502103502672852402111938‑23
2002304002923402952662038‑2312‑23
25025045033039540535035532022312‑2312‑28
30027050035644546040041037037824.5412‑2312‑28
35029055038150552046047042943426.5416‑2316‑28
40031060040656558051552548048928416‑2816‑31
45033065043261564056558553054828420‑2820‑31
50035070045767071562065058260931.5420‑2820‑34
60039080050878084072577068272036520‑3120‑37

STANDARD MATERIAL SPECIFICATION



NoPartsMaterial
1BodyGGG50
2Body SeatDN50‑DN150:Brass
DN200‑DN600:Welded bronze
3Disc SeatGGG50+Welded bronze
4Stem2Cr13
5Stem NutBrass
6Bonnet GasketEPDM/NBR
7BonnetGGG50
8Bonnet BoltsCarbon Steel Zinc Plated
9Holding RingBrass
10O ringEPDM/NBR
11Seal CartridgePOM (Polyacetal)



Technical Characteristic
Shell Test1.5/2.4 MPaSuitable Temp≤80℃
Seal Test(Hyd.)1.1 /1.76MPaCLASSPN10/16
SIZEDN50‑DN600


STANDARDS APPLIED

  • Design standard:BS5163,DIN3352 part4,DIN3352 part5;

  • Face to face dimensions:BS5163, DIN3202 F4.F5.

  • Connecting flanges:EN1092‑2.

  • Testing standard: EN12266‑1,DIN3230

Note:

Stem in SS304, SS316, and Duplex steel available on request

Stem Nut in bronze available on request

Bonnet Bolts in Stainless steel A2‑70, A4‑70 available on request

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微信图片_20250703154421.jpg   微信图片_20250703154407.jpg

DIMENSIONS (mm)



DNLdcgx‑n
TF
BS5163DIN3352‑F4DIN3352‑F51.0MPa1.6MPa1.0MPa1.6MPa1.0/1.6MPa1.0MPa1.6MPa1.0MPa1.6MPa1.0/1.6MPa
70061043090089591084084079424‑3124‑3732.539.55
80066047010001015102595095090124‑3424‑4035435
90071151011001115112510501050100128‑3428‑4037.546.55
100081155012001230125511601170111228‑3728‑4340505
1200101563014001455148513801390132832‑4031‑4945575

DNTop Flange∅D∅K∅Cd1Bx‑n1Key SizeTorque(N·M)
700ISO‑F2530025420055288‑∅1860×16900
80060288‑∅1860×161000
90060288‑∅18100×201200
1000ISO‑F3035029823070338‑∅22100×201400
120080338‑∅22100×221600

STANDARD MATERIAL SPECIFICATION



NoPartsMaterial
1Body SeatWelded bronze
2Disc SeatWelded bronze
3BodyGGG50
4DiscGGG50
5Stem NutBrass
6Stem2Cr13
7Seal CartridgeEPDM
8Bonnet BoltsCarbon Steel Zinc Plated
9Top FlangeGGG50
10BonnetGGG50
11YokeGGG50
12Drain PlugA2‑70



Technical Characteristic
Shell Test2.4/1.5 MPaSuitable Temp≤80℃
Seal Test(Hyd.)1.76/1.1 MPaCLASSPN10/16
SIZEDN900‑DN1200

STANDARDS APPLIED

Design standard:BS5163,DIN3352 part4,DIN3352 part5;

Face to face dimensions:BS5163, DIN3202 F4.F5.

Connecting flanges:EN1092‑2.

Testing standard: EN12266‑1,DIN3230

Note:

Stem in SS304, SS316, and Duplex steel available on request

Stem Nut in bronze available on request

Bonnet Bolts in Stainless steel A2‑70, A4‑70 available on request


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