Project Case Study · Gujarat, India

Pneumatic Knife Edge Gate & Swing Check — Oil & Gas

A pneumatically actuated DN100 Class 150 knife-edge gate package for sludge tank isolation, plus two DN80 Class 150 WCB flanged swing check valves for hydrocarbon backflow prevention — supplied in Gujarat.

Project snapshot

GujaratPlace of supply
Oil & GasIndustry
Pneumatic DAKGV actuation
1 + 2Qty (KGV + NRV)

1. Pneumatically actuated knife edge gate valve

Source: quotation & datasheet for DN100 Class 150 flameproof pneumatic package; proforma / delivery note confirm pneumatic double-acting supply.

ParameterSpecification
Valve typePneumatically actuated knife edge gate valve, lug type, uni-directional
Size / ratingDN100 (4 inch), ANSI Class 150
End connectionLug type, drilled to ANSI B16.5 Class 150
Body / bladeCF8 / SS304 body; SS304 blade ground and polished
SeatMetal-to-metal (integral), sludge duty
Design standardMSS-SP81 / API 598
ServiceTank bottom outlet isolation — solid-laden sludge media
Flow directionUni-directional
ActuatorDouble-acting pneumatic cylinder, side-mounted (horizontal), ISO 5211
Solenoid5/2 way, 24 VDC, Ex d IIC T6 IP66 flameproof enclosure
Limit switchesMechanical SPDT open/close in flameproof enclosures — PLC dry-contact feedback
Air prepFRL unit; speed controllers; junction box with cable glands; manual override; air tubing
Air supply5 to 7 bar dry filtered air
Hazardous areaElectrical accessories suitable for Zone 1, any gas group
PLC interface24 VDC solenoid command; dry-contact position feedback
TestingAPI 598 / MSS-SP81 hydrostatic + actuator function test
CertificationEN 10204 3.1 MTC; Ex certificates for solenoid & limit switches; GA + IOM
Quantity1 complete assembled set
Flanged Class 150 WCB swing check valve

2. Flanged swing check valve (NRV)

Source: quotation and datasheet — 3 inch Class 150 WCB swing check for slop oil / crude backflow prevention.

ParameterSpecification
Valve typeSwing check (non-return), flanged, bolted cover
Size3 inch (DN80, 76.2 mm port)
Pressure classANSI Class 150
BodyCast Carbon Steel ASTM A216 Gr. WCB
Disc / clapperASTM A216 WCB
Seat ringAISI 410 (hardened)
Hinge / hinge pinWCB / AISI 410
CoverASTM A216 WCB, bolted
Cover stud & nutASTM A193 Gr. B7 / ASTM A194 Gr. 2H
GasketSS304 spiral wound with Graphoil filler
End connectionFlanged ANSI B16.5 Class 150 Raised Face (RF 1.5 mm)
Face-to-face241 mm per ANSI B16.10
Flange OD / PCDOD 190.5 mm · PCD 152.4 mm · 4 × 19.1 mm bolt holes
Manufacturing stdBS 1868 / ANSI B16.34
Testing stdAPI 598 / BS 5146
Hydro body / seat30 kg/cm² / 22 kg/cm² · Air seat 7 kg/cm²
MediaSlop oil / crude (hydrocarbon)
Operating duty8 to 15 bar · ambient to 80 °C
Cracking pressureNegligible (gravity swing type)
Quantity2 Nos

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