Cast Steel Valve

Cast Steel Globe Valve

Product Description

XDV Cast Steel Globe Valves are designed and manufactured to ensure leakage of less than 100 ppm (parts per million) of volatile organic compounds. Extensive base line laboratory testing (static and cycle testing) has been performed establishing critical design parameters necessary to achieve low emission sealing in the XDV stem packing seal area and in the bonnet gasket sealing area, ln-house testing procedure has been developed and is periodically performed to ensure that standard product design and manufacturing criteria consistently result in the XDV Cast Steel Globe Valves meeting a maximum of 100 ppm voC leakage prior to shipment

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Product Range&Features

Size	2"~24"
Rating	150LB~2500LB
Body Materials	Carbon Steel, Stainless Steel, Alloy Steel, Duplex S.S. XDSS, etc.
Design Standards	API 623/BS 1873
Face to Face Standards	ASME B16.10, DIN3202, EN1092-1
Flange Dimension Standards	ASME B 16.5, ASME B16.47, DIN2543, DIN2544
Pressure Test Standards	API 598, DIN3230
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)
End Connection	RF, RTJ, BW
Operation	Handwheel, Gear, Motor

Product Details

NO.	PAPT NAME	MATERIAL-ASTM
1	BODY	ASTM A216 WCB 13CR
2	DISC	ASTM A105 13CR
3	DISC COVER	ASTM A105
4	STEM	ASTM A182 F6A
5	GASKET	SS304 GRAPHITE
6	BOLT	ASTM A193 B7
7	NUT	ASTM A194 2H
8	BACKSEAT BUSHING	ASTM A182 F6A
9	BONNET	ASTM A216 WCB
10	PACKING	FLEXIBLE GRAPHITE
11	PACKING GLAND	ASTM A182 F6A
12	EYEBOLTS	ASTM A193 B7
13	NUTS	ASTM A194 2H
14	PIN	ASTM A276 410
15	GLAND FLANGE	ASTM A216 WCB
16	STEM NUT	COPPER ALLOY
17	GRUP SCREW	C.S.
18	WASHER	SS304
19	LOCK NUT	C.S.
20	HAND WHEEL	KT33-8
21	NAME PLATE	SS304
22	RIVET	COPPER

Valve installation

● Before installation, Valves not required for immediate use should be stored under clean conditions to reduce the risk of foreign matter entering the valve during unpacking. If the valves are unpacked for checking purposes, they should be immediately re-packed until required for use. Protection caps fitted to inlet and outlet connections must be removed together with any internal anti-corrosion sachets, but not until immediately prior to installation.

● Valves are suitable for flow in one direction only (as indicated on the body) and must be installed accordingly. They should be installed with the stem in either the upright or horizontal position. Other positions may be detrimental to the proper seating of the disk.

● The valves should be installed in positions where minimum stress is imposed on them from expansion and contraction of the pipe, and pipework should be adequately supported close to the valve to minimize mechanical pipe strain.

● All valves will have been pressure tested at ambient temperature before delivery so it is recommended that gland packing nuts should be tightened after a short time on higher temperature service.

Troubleshooting guide

Symptom

Possible cause

SOLUTION

Leakage through the stem packing

1. Gland nuts are loose.

2. Gland is binding against the stem or packing chamber wall.

3. Inadequate amount of packing rings.

4. Packing is hard and dry.

5. Packing was not properly cut and staggered.

6. Stem is damaged.

1. Tighten gland bolts.

2. Check to ensure gland is centered and evenly tightened.

3. Install additional packing rings

4. Replace with new packing.

5. Replace with new packing.

6. Repair or replace as required.

Problems in operating valve

1. Stem binding during travel.

2. Stem packing is exerting excessive force on the stem

3. Stem is damaged.

4. Internal components may be damaged.

1. Remove dirt and lubricate stem with grease.

2. Check torque on gland nuts.

3. Examine stem through full open and close action. Repair or replace as required.

4. Disassemble the valve. Inspect and repair as needed.

Bonnet Leakage

1. Bonnet nuts are loose.

2. Gasket is damaged.

3. Flange faces are damaged.

1. Tighten to values as listed.

2. Disassemble and install a new gasket.

3. Repair and install a new gasket.

Seat Leakage

1. Valve not properly seated.

2. Internal components are damaged or worn.

1. Check to see if valve is tightly closed.

2. Inspect internal components and repair as required.