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Gate valve

Slab gate valve

Slab Gate Valves(Parallel type gate valves, Through Conduit Gate Valves)are widely used in oil, natural gas long-distance pipelines and gas fields as open/close control valves. Valves used in forging or casting body, the gate designed with diversion holes, non-diversion holes; single plate and double plate structure; Seat used bi-direction seal seat which mainly based on the metal seat sealing and assisted with soft seat sealing as a second type of seal. The series of parallel type gate valve has rational design, compact structure, sulfur resistance, corrosion resistance, wear-resistant, reliable sealing, and light torque of switches, easy-to-use.

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Description

Slab Gate Valves(Parallel type gate valves, Through Conduit Gate Valves)are widely used in oil, natural gas long-distance pipelines and gas fields as open/close control valves. Valves used in forging or casting body, the gate designed with diversion holes, non-diversion holes; single plate and double plate structure; Seat used bi-direction seal seat which mainly based on the metal seat sealing and assisted with soft seat sealing as a second type of seal. The series of parallel type gate valve has rational design, compact structure, sulfur resistance, corrosion resistance, wear-resistant, reliable sealing, and light torque of switches, easy-to-use.


Features                                                                       Specifications
Full Bore design                                                           Design Standard:API 6D, ASME B16.34    
Double block & bleed                                                  Face to Face:API 6D, ASME B16.10,    
Self cavity relief                                                            End Flange: ASME B16.5, MSS SP44 
Emergency Sealant injection                                        Buttwelding Ends:ASME B16.25    
Single disc or double disc                                            Test & Inspection:API 6D, API 598
Diversion hole type or non diversion hole 
Flanged or butt welding ends 
Fire safe design to API 6FA/ API 607


Slab gate valve the main performance specifications

Design grade

The test pressure at room temperature(MPa)

Suitable temperature ℃

Applicable medium

shell

left seal

low pressure seal

“G” type

“D” type

conventional type

anti-sulfur type

basic type

Nominal pressure PN(MPa)

1.6

2.4

1.76

0.6

-29~50

-45~21

-2~121

The medium of total content of H2S and CO2more than 500mg/m2

oil, gas, water,etc

2.5

3.75

2.75

0.6

4.0

6.0

4.4

0.6

6.4

9.6

7.04

0.6

Pound grade Lb

150

3.0

2.2

0.6

300

7.7

5.6

0.6

API 6D slab gate valve main material list

body

WCB

WC6

A352-LCB

A351-CF8M

disc

A105+ENP

20CrMoV+STL

ANSI410+ENP

ANSI316+ENP

stem

A276-420

2Cr13

A182-A6a

A182-A316S

seat

A105+PTFE

20CrMoV+STL

A105+PTFE

A182-F316+PTFE

packing

NBR/FPM

Flexible Graphite

PTFE+FPM

gasket

Graphite+304

bolt

35

35CrMo

A193-B7M

A193-B8

applicable medium

water,oil,steam

team,oil

propane,ethylene

nitrose


Slab gate valve Dimensions & constructral diagram(150lb)


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