Check Valves



Check Valves

SWING CHECK VALVE

CHECK VALVES prevents reversal of direction of flow through a line. They offer quick automatic reactions to flow changes, the pressure of the flowing fluid keeps the valve open & any reversal of flow closes it.

SERVICE RECOMMENDATIONS
• Minimum resistance to flow
• Low velocity services, especially liquids
• Infrequent change of directions in backflow prevention
• Used generally with CHECK VALVES

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CAST STEEL CHECK VALVE BOILTED COVER SWING TYPE/LIFT TYPE

LIFT CHECK VALVE
When SWING CHECK VALVES are used in systems in which frequent flow reversals may be encountered the valves may have a tendency to chatter. This can be corrected by equipping the valve with an outside lever & weight. It may be used to add weight to disc quicker closing against backflow preventing water hammer & excessive shock pressure.
The lever & weight can be adjusted so that the disc will open at the slightest pressure, or else to prevent the disc from opening until a desired pressure is attained

SERVICE RECOMMENDATIONS
• Frequent change of direction
• Increased flow resistance
• Prevention of backflow
• Used with Globe & Angel Valves

Dimention & Details

SR No. DESCRIPTION MATERAIL
Body ASTM A 216 GR. WCB ASTM 351 GR CF8/CF8M
Cover ASTM A 216 GR. WCB ASTM 351 GR CF8/CF8M
Disc ASTM A 216 GR. WCB + 13% Cr. STEEL Facing ASTM 351 GR CF8/CF8M
Seat Ring AISI 410 Integral With Body
Hinge ASTM A 216 GR. WCB AISI 304/316
Hinge Pin AISI 410 AISI 304/316
Gasket Spiral Wound Metallic Gasket AISI 304/316
Bolts/. Nuts ASTM A 193 GR. B7 / A 194 GR.2H ASTM A 193 GR. B7 / A 194 GR.2H
ALTERNATE MATERIAL OF CONSTRUCTION :-

WC6, WC9, LCB, LC6 CF3, CF3M, CN7M, CG3M, HESTALLOY C & B, MONEL, TITANIUM

CLASS 150

SIZE 25 40 50 65 80 100 150 200 250 300
A 127 165 203 216 241 292 356 495 622 698
H 85 120 152 190 205 228 280 330 356 482

All the dimensions are in M.M.

CLASS 300

SIZE 25 40 50 65 80 100 150 200 250 300
A 203 241 267 292 318 356 445 543 622 711
H 150 160 178 216 229 254 317 368 381 495

All the dimensions are in M.M.

SPECIFICATIONS


Design Standard : BS 1868 / API 6D/ ASME B 16.34
Face to Face : ASME B 16.10
Flanged Ends : ASME B 16.5 R/F
Buttweld Ends : ASME B 16.5
Testing : BS 6755 – I

MANUFACTURING RANGE
SIZE PRESSURE RATING
25 MM TO 400 MM 150 # TO 1500 #
INSPECTION & TESTING
CLASS SHELL SEAT
HYDROSTATIC HYDROSTATIC
150 # 30 Kg/Cm2 22 Kg/Cm2
300 # 77 kg/Cm2 55 kg/Cm2


Available on Request

• Stellite facing
• Jacketed Construction
• Sluice Gate Valve
• Valve Under “X-Ray” Quality
• Gear operated
• Motor Operated Valve

"SCENT MAKE" valves are used in Chemical Petro–Chemicals, Power Plants, Nuclear Plants, Pharmaceuticals Industries & many more.