Check Valve

check Valve Introduction

Check valve is a kind of automatic valves, which can avoid medium refluence, pump and actuating motor reversal, and medium leakage. Check valve can also be used for the pipelines which is used to supply provision for the auxiliary system whose pressure may exceed the system pressure.

DATIAN's check valves:
API 594/6D/602, ASME B 16.34, ANSI, DIN 3840, BS 1868/1873, BS EN 1868, swing, lift, wafer, forged, Class 150 - 2500, 1/2 - 48 inch.

Globe Valve

swing chieck valv, BB, CS

Design

Datian cast steel check valves are designed and manufactured to provide maximum service life and depend abilty.All check valves meet the design requirements of American Petroleum Institute standard API 600&6D.BSEN 13709 and generally conform to American Society of Mechanical Engineers standard AS ME B 16.34.
Valves are available in a complete range of body/cover materials and trims.

Rang of Materials

Standard body/cover materials include nine grades of carbon, low alloy and stainless steels, for special applications they can be supplied in other grades of alloy and stainless steel, there'sa full range of trim materials to match any service optional
packing and gasket materials are available for a full range of service conditions.

Available Modifications For Cast Steel Valves

● Trim changes
● End connection modifications
● Packing and gasket changes
● Operator mounting
● Handwheel extensions
● Pressure equalizing
● Customer specified coatings
● Weld end bore changes
● Oxygen&chlorine cleaning&packaging

HCU weighted mechanical accumulator

This design can be used to either dampen or assist
closing of the check valve disc depending on orientation.
by using the hydraulic control unit to buffer action the
disc, the valve opens at lower flowrates.

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SWING-CHIECK-VALV
[A] Eyebolt

For 150Lb-8”, 300Lb-8”,
600Lb-6”, 900Lb/1500Lb/
2500Lb-4” & over.

[B] BC

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

[C] End Connections

A choice of flanged, RTJ
flanged or butt welding
end for piping flexi bi ity.

[D] Body-to-Cover Joint

A male and female joint or tongue and groove joint is used 150Lbto600Lb valves.
Ring joint is used in the body to cover connection in900Lb & higher rated valves

[E] Outside Lever And Weight

All external hinge pin swing check valves 12 and smaller are available with an optional outside lever and weight, internal hinge available with all swing
check valves.

[F] Seat Rings

Separate heavyduty, full ported rings for easy maintenance.
Screwed or welded connection into body.

swing, cast steel check valve

Applicable Standards:

● STEEL CHECK VALVES, API6D
● STEEL CHECK VALVES, ISO 14313
● STEEL VALVES, AS ME B 16. 34
● D FACE TO FACE, AS ME B 16. 10
● D END FLANGES, AS ME B 16. 5
● BUTT WELDING ENDS, AS ME B 16. 25
● INSPECTION AND TEST, API 598/API6D

Design description:

● STEEL CHECK VALVES, API6D
● STEEL CHECK VALVES, ISO 14313
● STEEL VALVES, AS ME B 16. 34
● FACE TO FACE, AS ME B 16. 10
● END FLANGES, AS ME B 16. 5
● BUTT WELDING ENDS, AS ME B 16. 25
● INSPECTION AND TEST, API 598/API6D

swing, cast steel check valve

lift type cast steel check valve

Applicable Standards

● STEEL CHECK VALVES, B SEN 13709/API 600, J IS
● STEEL VALVES, AS ME B 16. 34
● FACE TO FACE, AS ME B 16.10, J IS
● END FLANGES, AS ME B 16.5, J IS
● BUTT WELDING ENDS, AS ME B 16. 25
● INSPECTION AND TEST, API 598

Design description

● BB.BOLTED BONNET
● LOOSE DISC, CHOICE OF PLUG OR BALL
● RENEWABLE SEAT RING
● HORIZONTAL SERVICE
● FLANGED OR BUTT WELDING ENDS

lift type cast steel check valve

pressure seal cast steel swing check valve

Applicable Standards

● STEEL CHECK VALVES, API 594/API6D
● STEEL CHECK VAL CES.ISO 14313
● STEEL VALVES, AS ME B 16. 34
● FACE TO FACE, AS ME B 16. 10
● END FLANGES.AS ME B 16. 5
● INSPECTION AND TEST, API 598

Design description

● PSB, PRESSURE SEAL BONNET
● FULLY POT
● RENEWABLE SEAT RINGS
● FLANGED OR BUTT WELDING ENDS

pressure seal cast steel swing check valve

butterfly dual-plate, cast steel check valve

Applicable Standards

● steel check valves, api 594/api6d
● steel check valves, iso 14313
● steel valves.as me b 16.34
● face to face.api 594
● end flanges, as me b 16.5
● inspection and test, api 598/ap16d

Design description

● one piece body
● butterfly swing type
● dual-plate disc, long-pattern
● renewable split disc
● horizontal or vertical service
● wafer ends
● available with flanged ends

BUTTERFLY DUAL-PLATE, CAST STEEL CHECK VALVE

wafer lift type-plate cast steel check valve

Applicable Standards

● STEEL CHECK VALVES, API 594
● STEEL CHECK VALVES, ISO 14313
● END FLANGES, AS ME B 16.5
● INSPECTION AND TEST, API 598

Design description

● ONE PLE CE BODY
● LIFT TYPE
● HORIZONTAL OR VERTICAL SERVICE
● AVAILABLE WITH FLANGED ENDS

wafer lift type-plate cast steel check valve

wafer swing type-plate cast steel check valve

Applicable Standards

● STEEL CHECK VALVES, API 594/API6D
● STEEL CHECK VALVES, ISO 14313
● STEEL VALVES, AS ME B 16. 34
● FACE TO FACE, MANUFACTURE STANDARD
● END FLANGES, AS ME B 16.5
● INSPECTION AND TEST, API 598/API6D

Design Description

● ONE PLE CE BODY
● BUTTERFLY SWING TYPE
● SINGLE DISC, SHORT-PATTERN
● RENEWABLE SPLIT DISC
● HORIZONTAL OR VERTICAL SERVICE
● WAFER ENDS

wafer swing type-plate cast steel check valve

compact steeel check valve 800Lb

Applicable Standards

● STEEL CHECK VALVES, API 602
● STEEL VALVES, AS ME B 16.34
● FACE TO FACE, MANUFACTURER STANDARD
● FACE TO FACE, FLANGED, AS ME B 16.10
● END FLANGES, AS ME B 16. 5
● BUTT WELDING ENDS, AS ME B 16.25
● SOCKET-WELDING ENDS, AS ME B 16.11
● SCREWED ENDS, AS ME B 1.20. 1
● INSPECTION AND TEST, API 598

Design description

● BOLTED COVER
● CHOICE OF WB, WELDED COVER
● SEAT RINGS TYPE
● SEAT RINGS INTEGRAL WITH BODY OF LIFT
● HORIZONTAL OR VERTICAL SERVICE
● SW, SOCKET-WELDING ENDS
● SC, SCREWED ENDS
● BW, BUTT WELDING ENDS
● FLANGED ENDS

compact steeel check valve 800Lb

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