Cast Steel Valve

Cast Steel Swing Check Valve

Product Description

XDV Universal Cast Steel Check Valves are designed and manufactured stricty to International Standards APl6D, BS1868, ASMEB16.34 or Equivalent, or reduce the flow resistance and pressure drop to the minimum possible extend, which is suitable to be mounted in horizontal postion only, lapped and screwed in seat ring ensures tight shut of and long duration service. valves disc is perfectly designed, accurately machined and guided for efficient automatic shut off at zero pressure, with a feature of compact structure & Low emission service. In both Swing & Piston Constructions.

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Product Range&Features

Size	2"~48"
Rating	150LB~2500LB
Body Materials	Carbon Steel, Stainless Steel, Alloy Steel, Duplex S.S. XDSS, etc.
Design Standards	API 6D/BS 1868/API 594
Face to Face Standards	ASME B16.10
Flange Dimension Standards	ASME B 16.5, ASME B16.47
Pressure Test Standards	API598
Quality/Product Certifications	ISO9001, ISO14001, ISO18001
Fugitive Emissions	ISO 15848-1, API 622
NACE	NACE MR 0103 NACE MR 0175
Shutoff Class	API 598 (Zero Leakage), API 6D
End Connection	RF, RTJ, BW

Product Details

NO.	PAPT NAME	MATERIAL-ASTM
1	VALVE BODY	WCB
2	SEAT RING	F316
3	DISC	316
4	NUT	ASTM A194 8M
5	ROCKER	316
6	HINGE PIN	316
7	BOLT	316
8	GASKET	FELEXIEBE GRAPHITE 304
9	BONNET	WCB
10	BOLT	ASTM A193 B7
11	NUT	ASTM A194 2H

Troubleshooting guide

SYMPTOM	PROBABLE CAUSE	SOLUTION
Leakage at sealing surface	Dirt on the sealing surface	Clean the sealing surface
Leakage at sealing surface	Sealing surface damaged	Repair the sealing surface
Cannot operate normally	Dirt debris may be trapped between Hinge/Swing Arm/Hinge Pin	Remove dirt or debris
Bonnet gasket leakage	Loosen flange bolt/nut	Re-torque the flange bolt/nut
Bonnet gasket leakage	Bonnet gasket failed	Replace with new gasket
Valve body and bonnet both damaged and valve leaks	Corrosion over time. Wall thickness may be below minimum required	Regularly check the wall thickness, replace the valve ahead of the time.
Disc will not operate normally	Hinge Pin maybe deformed and jammed	Replace valve Hinge Pin

Visual valve inspection

1.Confirm that the materials of construction listed on the valve tag plate are appropriate for the service intended are as specified.

2.Before installation, check the valve name plate and valve body information to ensure the valve is suitable for the intended service.

3.Before installation, remove the flange cover and the protective film on the flange sealing face, and disc support, inspect the bore and the flange sealing surface, remove any dirt with clean soft cloth, use an anti-corrosive cleaning liquid to clean if necessary, and never use any other chemical products.

4.Inspect the flange gasket (including ring gasket) sealing surface and ensure it is in acceptable condition for installation.

Valve installation

Position the valve into the pipe or the flange connection; ensure that any stress caused byimproper pipe alignment isrelieved first. Valves are not intended to be a means of aligning improperly fitted pipe.
Valves marked with flow direction must be installed in line with the piping flow.
Valve should be installed in a horizontal position with the center of the valve.