The gate valves are used as the closing valves for: - noncorrosive fluids - saturated steam - oil - air - petroleum and petroleum products Operating parameters are in accordance with the standard ASME B 16.34. Ambient temperature from -58ºF to +122ºF (-50ºC to +50 ºC). Application in other working conditions has to be discussed with the manufacturer. Dependence of pressure on temperature according to ASME B 16.34. technical description: construction: designed dimensions: material design: assembly: testing: order specification: Data necessary for the order (standard API 600 is applied): type number, nominal diameter, pressure class, design The yoke gate valve can be assembled in any position into the pipeline. The gate valves are supplied in different material variants. The construction of steel gate valves of MSA corresponds to API 600 and BS 1414. Gate valves are yoke, flanged or welded with unnarrow flow rate and with flexible or fixed wedge. Bodies, covers and yokes are cast. Wedges could be forged or cast. All wedges are guided. Sealing seats are bolted or welded into the body. Overlays in seats depends on Trim. Valves have rising non-rotative spindle and bolted joint of body-cover. Standard spindle threads are ACME 2G-LH. Operation with a handwheel. On the basis of mutual agreement, the gate valves can be operated by angle transmission, electric actuator or pneumatic actuator. For easier control the gate valve with larger diameters are equipped with bearings. Sealing material is pressed rings from expanded graphite and graphited plaited rings. The properties of gate valve packing meet the requirements of the directive Clean Air Act, Amendment from 1990. The gate valves can be also equipped with: drainage, venting, relief from interspace and bypasses, on the special customer´s request. The gate valves are subjected to presure testsaccording to the standard API 598: on strenght and tightness, tightness of backseat, closure tightness by low pressure, closure tightness by high pressure (on request). The dimensions of standard design are stated in the table below. Data necessary for the order (standard API 600 is applied): type number, nominal diameter, pressure class, design (connection), wedge type, type of operation, material of body, cover, inner equipment, working parameters, required testing, accopanying documentation.
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Transcript
The gate valves are used as the closing valves for:
- noncorrosive fluids
- saturated steam
- oil
- air
- petroleum and petroleum products
Operating parameters are in accordance with the standard ASME B 16.34.
Ambient temperature from -58ºF to +122ºF (-50ºC to +50 ºC).
Application in other working conditions has to be discussed with the manufacturer.
Dependence of pressure on temperature according to ASME B 16.34.
technical description:
construction:
designed dimensions:
material design:
assembly:
testing:
order specification:
Data necessary for the order (standard API 600 is applied): type number, nominal diameter, pressure class, design
The yoke gate valve can be assembled in any position into the pipeline.
The gate valves are supplied in different material variants.
The construction of steel gate valves of MSA corresponds to API 600 and BS 1414. Gate valves are yoke, flanged or
welded with unnarrow flow rate and with flexible or fixed wedge. Bodies, covers and yokes are cast. Wedges could be
forged or cast. All wedges are guided. Sealing seats are bolted or welded into the body. Overlays in seats depends
on Trim. Valves have rising non-rotative spindle and bolted joint of body-cover. Standard spindle threads are ACME
2G-LH.
Operation with a handwheel. On the basis of mutual agreement, the gate valves can be operated by angle
transmission, electric actuator or pneumatic actuator. For easier control the gate valve with larger diameters are
equipped with bearings. Sealing material is pressed rings from expanded graphite and graphited plaited rings. The
properties of gate valve packing meet the requirements of the directive Clean Air Act, Amendment from 1990. The
gate valves can be also equipped with: drainage, venting, relief from interspace and bypasses, on the special
customer´s request.
The gate valves are subjected to presure testsaccording to the standard API 598: on strenght and tightness, tightness
of backseat, closure tightness by low pressure, closure tightness by high pressure (on request).
The dimensions of standard design are stated in the table below.
Data necessary for the order (standard API 600 is applied): type number, nominal diameter, pressure class, design
(connection), wedge type, type of operation, material of body, cover, inner equipment, working parameters, required
testing, accopanying documentation.
basic standard for construction
basic construction
design lenght
flange dimension
dimensions of welded ends
testing
API 600
ASME B 16.10
ASME B 16.5 30" - 36" MSS SP 44 (API 605)
ASME B 16.25
API 598 testing
dependence of maximal allowable pressure on temperature
API 598
ASME B 16.34
applied standards:
B 16.5 flange, pipeline and valve B 16.10 designed dimensions B 16.25 welding ends B 16.34 valves - flanged, bolted and welded B 1.20.1 screw threads, general purpose B 16.47 larger steel flanged dimensions (substitute for API 605 and MSS SP-44) B 31.1 pipeline for chemical factories and refineries
ASTM material specification
ASME instrucions for vessels under pressure
API specification for quality systemsspecification for pipeline valvesbolted cover of steel gate valve for oil and gas industriesvalve inspections and testingfire-resistant sealing and sealing materialstandards for pipelines
MSS standard ends of contact surfaces for pipeline and valve flangesstandard markings for valves, flanges and connecting componentsflanges fo steel pipelinesmethod of magnetic testingmethod of radiographic testingvisual inspection of steel castingsgraphited sealing for valves with rising spindle (constructional requirements)
SP-53
SP-54
SP-55
SP-120
SPEC Q1
SPEC 6D
SP-6
SP-25
SP-44
600
Std 598
Std 589
SPEC 5L
part V,VIII, IX
ASME
graphited sealing for valves with rising spindle (constructional requirements)
NACE ISO 15156 - materials for H2S - for oil and gas industry
materials resistant to cracking in the corrosive oil surrounding
British standards:
BS 1414 steel gate valve - flanged or welding ends for petrochemistry 1868 steel swing check valves - flanged or welding ends for petrochemistry 1873 steel globe valves and flanged swing check valves for petrochemistry 1560 round pipe flange, flanges and valves 2080 designed dimensions 5146 valve inspections and testing
international standards:
EN ISO 9001
ISO 5211 designed dimensions of actuators to valves EN 10 204 type of document for inspection ISO 10 434 / API 600 bolted cover of steel gate valves for petrochemistry ISO 14�313 / API 6D petrochemistry - transfer pipeline system - pipeline valves ISO 5208 industrial valves - valve testing with pressure