Flange Gate Valve

LYV® is the flange gate valve manufacturers and suppliers in China that approved API 6D and CE certificate. We follow the quality of rest assured that the price of conscience, dedicated service, you can trust us.

Flange gate valve is a liner-motion valve that uses a typically flat closure element perpendicular to the process flow, which slides into the flow stream to provide shut off, to do an on-off function for the liquid and gas services, to connection with the pipeline with two flanges. The gate valves can be widely used in various industries, for water, natural gas, oil, petro and petrochemical plants. .

Design & Testing International Standard:

Design Standard : API 600, ASME B16.34

Inspection & Testing Standard : API 598

Flange To Flange Length : ANSI B 16.10

End Connection : Flanged End to ANSI B 16.5,

Manufacturer Size and Pressure Range:

NPS 2” to 48 ” (for ANSI Class 150LB)

NPS 2” to 40” (for ANSI Class 300LB)

NPS 2” to 24” (for ANSI Class 600LB)

NPS 2” to 20” (for ANSI Class 900LB)

NPS 2” to 16” (for ANSI Class 1500LB)

NPS 2” to 12” (for ANSI Class 2500LB)

Construction Body: Outside screw and yoke(OS&Y)

Bonnet/Cover type: Bolted Bonnet (BB) / Pressurized Seal Bonnet (PSB)

Seat Type: Hardseal Metal Type

Stem Type: Ring Stem

Gasket: Spiral Wound Gasket

Flow Directional: Uni-Directional

Service Medium: Natural Gas, Oil, Water, gas, etc

Fugitive Emission: ISO 15848

Valve Operation: Handwheel / Worm-Gear / Motor Actuator

MOC (Bill of Material – BOM) :

Body &Bonnet: ASTM A 216 GR. WCB (Carbon steel)

: ASTM A352 LCB / LCC (Low temp. carbon steel)

: ASTM A217 WC1/ WC6/ WC9/ C5 (High temp. carbon steel)

: ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316) (Stainless Steel)

: ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L) (Stainless Steel)

: ASTM A351 Gr. CF8C

: ASTM A890 4A / 5A/ 6A (Duplex Stainless Steel)

Disc : ASTM A216 GR.WCB /

: ASTM A352 LCB / LCC

: ASTM A217 WC1/ WC6/ WC9/ C5

: ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316)

: ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L)

: ASTM A351 Gr. CF8C

: ASTM A890 4A / 5A/ 6A

Stem : ASTM A182 F6a

:ASTM A182 F304 / F316 / F304L / F316L

:17/4 PH

: ASTM A182 F51/ F53/ F55

Seat Ring: : ASTM A105N / A105N

: ASTM A 182 F304 / F316

: ASTM A 182 F304L / F316L

: ASTM A 182 F347 : ASTM A182 F51/ F53 /F55

Gasket: SS Spiral Wound+ Graphite, or SS Spiral Wound + PTFE, or Reinforced PTFE

Gland Packing : Flexible Graphite /PTFE