gate Valve

Pneumatic | Electric

gate Valve Introduction

Gate valve is an on-off type valve. The movement direction of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact of the valve seat and the gate plate. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the different gates, the gate valve is divided into a rigid gate valve and an elastic gate valve.

Gate valve, BB, CS

Design

Datian cast steel gate valves are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the designrequirements of American Petroleum Institute standard AP1600&API 6D. British standard BS1414 & BS EN 1984 and generally, conform to American Society of Mechanical Engineers standard ASME B16. 34. Valves are available in a completerange of body / bonnet materials and trims

Rang of Materials

Standard body/bonnet materials include nine grades of carbon, low alloyandstanlesssteel, for special applications they can be supplied in other grades of alloy andstainless steel. There's a full range of trim materials to match any service optionalpacking and gasket materials are available for a full range of service conditions

Available Modifications for Steel Valves

● Trim changes
● End connection modifications
● Packing and gasket chang
● Operator mounting
● Handwheel extensions
● Pressure Equalizing
● By-Pass
● Customer Specified Coatings
● Weld End Bore Changes
● Oxygen & Chlorine Clearing & Packaging

Available-Modifications-for-Steel-Valve
Operating

Large handwheels for easyoperation. also avaliablewith gearing. motor actuators,pneumatic or hydraulic actuatorsfor more difficult services

Live Load Packing

In services requiring frequent cyclingor with high pressure/temperaturevariations, live lbadngextends theservcelife between maintenance periodsbyrequiring less stments. Bellevillesprings are employed to provideconstant packing gland stress

OS&Y

Outside screw and yoke. Cast steel gate valve yoke integral with bonnet for150Lb-8"600Lb-690oLb-4" &small

End Connections

A choice flanged, RTJ flanged or buttwelding end for piping flexbility.

BB

Bolted bonnet, welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure / temperature variations.

Yokesleeve

Extra long trread engagement between yoke sleeve and stem provide long thread life, valves of sizes larger than 150Lb-12", 300Lb-10", 600Lb-4" are regularly provided with roll bearing yokes.

Lantern Ring And Double Packing Set

Lantern ring leak-off fitting connection and double packing stack is optionally avaliable for critical services

Body-to-Bonnet Join

A flat face gasket join is used in the 150lb valve. Amale and female joint is used in 300lb to 600lb valves, ring joint is used in the body to bonnet connectons in 900lb & higher rated valves.

Stem

All wedge gate vlaves are provided with upset forged T-head stems. By forging the T-head, the stem at the stem-wedge connection is stregthened, this design also allows the wedge possibility of a bent stem jamming the wedge.

Wedge

Integral guide rib faces assure sel-centering of wedge, flexible wedge gate valve has a one-piece, twin-disc wedge, with is designed so that each half flexes independently, avaliable in solid, flex split and his designs.

Cast steel gate valve

Applicable standards:

● Steel gate valves API 600/API6D
● Steel gate valves ISO 10434/ISO 14314
● Steel gate valves, ASME B16.34
● Face to face, ASME B 16.10
● End flanges, ASME B16.5
● Buttwelding ends, ASME B16.25
● Inspection and test API 598 / API 6D

design description:

● FULL PORT DESIGN
● OS&Y OUTSIDE SRCEW AND YOKE
● BB BOLTED BONNET
● FLEXIBLE WEDGE FULLY GUIDED
● CHOICE OF SOLID OR SPLIT WEDGE
● RENEWABLE SEAT RINGS
● FORGED T-HEAD STEM
● RISING STEM AND NON-RISING HANDWHEE
● FLANGED OR BUTTWELDING ENDS
● AVAILABLE WITH BG OPERATOR

CAST STEEL GATE VALVE

Slab-Plate Gate Valve

Technical Requirement

● DESIGNED AND MAN FACTURED ACC.TO API-6D
● FACE TO FACE ACC.TO AS ME B 16. 10
● ENDS ACC.TO ANSI B 16. 5
● TESTEN AND INSPECTED AS PER API 598\6D

design description:

● FULL PORT DESIGN
● OS&Y OUTSIDE SRC EW AND YOKE
● BB.BOLTED BONNET
● SLAB PLATE FULLY GUIDED
● CHOICE OF SOLID OR SPLIT WEDGE
● RENEWABLE SEAT RINGS
● FORGED T-HEAD STEM
● RISING STEM AND NON-RISING HANDWHEEL
● FLANGED OR BUTT WELDING ENDS
● AVAILABLE WITH BG OPERATOR

SLAB-PLATE GATE VALVE

Knife gate valve

Technical Requirement

● DESIGNED AND MAN FACTURED ACC.TO MSS-SP-81
● FACE-TO FACE ACC.TO MSS-SP-81
● ENDS ACC.TO ANSI B 16. 5
● TESTED AND INSPECTED AS PER API 598

design description:

● FULL PORT DESIGN
● OS&Y OUTSIDE SRC EW AND YOKE
● BB.BOLTED BONNET
● RISING STEM AND NON-RISING HANDWHEEL
● WAFER TYPE
● AVAILABLE WITH BG OPERATOR

KNIFE GATE VALVE

pressure seal, cast steel gate valve

Applicable Standards

● STEEL CATE VALVES, API EO/A716D
● STEEL GATE VALVES, ISO1C 43418014313
● STEEL VALVE, SASMEB1H 34
● FACE TO FACE, ASMCB 16. 10
● END FANGEE AS ME B 16. 5
● BUTTWELDING ENDS, ASME B16.25
● INSPECTION AND TEST, API 598

Design description

● PSB, PRESSURE SEAL BONNET
● Fl EXIBLE WEDGE, FULLY GUIDED
● CHOICE OF SOLID OR SPLIT WEDGE
● RENEWABLE SEAT RINGS
● FORCED T-HEAD STEN
● RISING STEM AND NON-RISING HANDWHEEL
● FANGED OR BUTTWELDING ENDS
● AVAILABLE WITH BG OPERATOR

pressure seal, cast steel gate valve

cryogenic gate valve

Applicable Standards

● STEEL GATE VALVES, AFI 600
● STEEL GATE VALVES, ISO 10434/IS C 14313
● STEEL VALVES, ASME B 16. 34
● FACE TO FACE, ASME B 16. 10
● END FLANGES, ASME B 16. 5
● BUTTWELDING ENDS, ASMF B16.25
● INSPECTION AND TEST, AP1598/AP16D

Design description

● FULL PORT DESIGN
● OS&Y, CUTSIDE SCREW AND YOKE
● BB, BOLTED BONNET
● FLEXIBLE WEDGE FULLY GUIDED
● CHOICE OF SOLID OR SFL IT WEDGE
● SEAT RINGS INTFGRAL WITH BODY
● FORGED T-HEAD STEM
● RISING STEM AND NON-RISING HAND WHEEL
● FLANGED OR BUTTWELDING ENDS
● AVAILABLE WITH BG OPERATOR

cryogenic gate valve

forged steel gate valve 800lb

Applicable Standards

● STFFL GATF VAIVFS, API 602
● STEEL VALVES, ASME B 16.34
● FACE TO FACE, MANUFACTURER STANDARD
● F LANGED ASME B16. 10
● END FLANGES, AS ME B 16.5
● BUTTWELDING ENDS. ASME B16.25
● SOCKET-WELDING ENDS ASME B 16.11
● SCREWED ENDS, ASME B1.20.1
● INSPECTION AND TEST, API 598

Design description

● OUTSIDE SCREW AND YCKE(OS&Y)
● BOLTED BONNET
● CHOICE OF WE, WELDED BONNET
● SINGLE WEDGE, FULLY GUIDED
● RENEWABLE SEAT RINGS
● YOKE INTEGRAL WITH BONNET
● RISING STEM AND NON-RISING HANDWHEEL
● SW, SOCKET-WELDING ENDS
● SC, SCREWED ENDS
● BW, BUTT WELDING ENDS
● FLANGED ENDS

forged steel gate valve 800lb

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