2016年6月30日星期四

CHECK VALVES TYPES IN API 594

1 General

1.1 SCOPE
This standard covers design, material, face-to-face dimen-sions, pressure-temperature ratings, and examination, inspec-tion, and test requirements for gray iron, ductile iron, steel, and alloy single and dual plate check valves (supplied byChina valve manufacturer). Valve configura-tions include wafer, wafer-lug, and double flanged type with facings that will permit installation between ASME and MSS flanges that conform to the standards and specifications listed in section

1.2 SIZES
This standard covers the following nominal valve size ranges:
a. Classes 125 and 250, NPS 2-48 (excluding NPS 31/2).
b. Classes 150 and 300, NPS 2-60 (excluding NPS 31/2 and 5).
c. Classes 400 and 600, NPS 2-42 (excluding NPS 31/2 and 5).
d. Classes 900 and 1500, NPS 2-24 (excluding NPS 31/2 and 5).
e. Class 2500, NPS 2-12 (excluding NPS 31/2 and 5).

1.3 VALVE NOMENCLATURE
The standard nomenclature for valve parts is shown in Fig-ures 1, 2, 3, and 4. These figures illustrate some wafer, wafer-lug and double flanged type check valve designs (designed by China valve supplier). AlthoughFigures 1, 2, 3, and 4 show typical designs, they are not to be construed as precluding other available designs that comply with the requirements of this standard.

IOM For Gate, Globe & Check Valves

1-RECEPTION
1a- While unpacking the valve, confirm that the valves and any of the accessories were not damaged during transportation.
1b- Do not place the valve directly on the ground or concrete floor. Place the valve on wooden pallet for inspection.
1c- Do not remove the end caps or protective flange coverings until it is ready for inspection or installation. If the protective coverings are removed for inspection, immediately reinstall them after the inspection.
1d- It is strongly recommended that the valves are to be stored in indoor, in a dry, dust free atmosphere.
2-STORAGE
2a- Valve should be stored in a dry, weatherproof building (preferably climate controlled).
2b- The valve/its actuator should have all fluid ports or connections plugged to prevent ingress of water or dust. Coupling parts must be protected with grease or protective oil.
2c- Install plastic or plywood flange protectors on each flange. Tape the edges of the protector with dust-tape to provide an air tight seal.
2d- The product should be operated monthly to ensure lubricated areas have lubricant distributed accordingly. The valve stem should be left in a different position each month.
2e- Spray the inside of the valve to make it clean after installation.

3-INSTALLATION
3.1 Installation Positions
Cast Steel Wedge Gate valves are usually bi-directional, and therefore may be installed in either direction. In some special cases, gate valves may be unidirectional, in which case the direction of flow will be indicated on the valve body.
Globe and check valves are unidirectional, and have the direction of flow indicated on valve body. RELIA piston and ball check valves are recommended for use only in horizontal lines with the cover facing up.Spring loaded RELIA piston and ball check valves are recommended for use in horizontal lines only, but may be installed with cap facing down as well as up. RELIA swing check valves may be installed in horizontal lines or vertical lines where the direction of flow as indicated on valve body is upwards.
3.2 Installation Positions
Remove protective end caps or plugs, and inspect valve ends for damage to threads, socket weld bores or flange faces.
Thoroughly clean adjacent piping system to remove any foreign material that could cause damage to seating surfaces during valve operation.

Verify that the space available for installation is adequate to allow the valve (byvalve supplier )to be installed and be operated.

Caution: Insufficient clearance for the stem in the fully open position may cause the valve to be inoperable. Inadequate clearance for valves may add mechanical loading to the valve ends. Sufficient clearance should be allowed for threaded valves to be “swung” during installation.
3.3 End connections
3.3a- Threaded Ends
Check condition of threads on mating piping.
Apply joint compound to the male end of joint only. This will prevent compound from entering the valve flowpath.
3.3b- Flanged Ends
Check to see that companion flanges are dimensionally compatible with the flanges on the valve body and make sure sealing surfaces are free of dirt.
Install the proper studs and nuts for application and place the flange gasket between the flange facings.
Caution: Stud nuts should be tightened in a criss-cross pattern in equal increments to ensure proper gasket compression.
3.3c- Socket Weld Ends
Remove all grease, oil or paint from the pipe that is to be welded into the valve and from the valve end connections.
Insert the pipe into the valve end connection until it bottoms out in the socket weld bore. Withdraw the pipe 1/16” so that a gap remains between the pipe and the bottom of the socket weld bore to prevent cracks. Tack the pipe into the valve and complete the fillet weld.
Caution: Gate and globe valves should be lightly closed to prevent damage to the seating surfaces and stem caused by thermal expansion during the socket welding process.
3.3d Post-Installation Procedures
After installation, the line should be cleaned by flushing to remove any foreign material. When caustics are used to flush the line, additional flushing with clean water is required. The valve should be opened and closed after installation to ensure proper operation function.
With the line pressurized, check the valve end connections, body to bonnet/cover joints and stem packing area for leaks. The packing may have to be tightened to stop packing leakage at the system pressure.

4-OPERATION
Gate valves should be used only in the fully opened or fully closed position.
Globe valves should be used continuously at openings than 25%.
Caution: Gate and globe valves should not be left in the fully back seated position under normal operating conditions. The packing may dry out under these conditions and leak as the valve is closed.
A cool valve may leak through the gland when opened to hot fluid. Wait before tightening the packing as the problem may go away.
Metal seated check valves (piston, ball and swing) are not zero leak devices and may “seep” in service. This type of valve should always be backed up with an isolation valve (either gate or globe)
5-MAINTENANCE
Proper PPE should be worn when preparing to serve a valve. Observe the following general warnings.
-A valve is a pressurized device containing energized fluids and should be handled with appropriate care.
-Valve surface temperature may be dangerously too hot or too cold to the skin.
-Upon disassembly, attention should be paid to the possibility of releasing dangerous and or ignitable accumulated fluids.
-Adequate ventilation should be available for service.

Globe Valve Scope Specified In BS 1873

BS 1873- Specification for Steel globe and globe stop and check valves (flanged and butt-welding ends) for the petroleum, petrochemical and allied industries

This British Standard specifies requirements for cast or forged carbon and alloy steel outside screw and yoke globe valves and globe stop valves and check valves, straight pattern, angle pattern and (oblique) Y pattern, with flanged or butt-welding ends in nominal sizes within the range of 15 mm to 400 mm (1/2 in to16 in) and Classes150 to2500. This standard can also be used as a general guide where valves of material composition outside the scope of section three of this standard are required as, for example, for use in highly corrosive services or environments or for low temperatures (see clause37). The standard can be adapted to apply to valves with needle type seats in15mm (1/2 in) an 20 mm (< in) nominal sizes which will meet all requirements of this standard, except that the valve seat bore is reduced and the needle point may be either integral with or loose on the stem.

2. Pressure classification
This standard applies to valves of the following pressure class designations: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500 and Class 2500. The numerals in these class designations represent the primary service pressure ratings of the valves in pounds-force per square inch.

3. Pressure/temperature ratings
The pressure/temperature ratings applicable to valves specified in this standard shall be in accordance with Tables PE-1 to PE-12 of AppendixA of BS1560-2:1970 for the particular shell material specified. There is, however, a temperature restriction on soft seals and on certain trim materials (see18.3 and30.5)

4. Nominal sizes 
This standard covers valves of the following nominal sizes: 
1/2 in-16 in, DN 15-DN 400 mm

2016年6月29日星期三

Valve Types And Configurations Covered In API 6D

Scope This International Standard specifies requirements and gives recommendations for the design, manufacturing,testing and documentation of ball, check, gate and plug valves for application in pipeline systems meeting therequirements of ISO 13623 for the petroleum and natural gas industries. Valves for pressure ratings exceeding PN 420 (Class 2500) are not covered by this International Standard.Annex A of this International Standard provides guidelines to assist the purchaser with valve type selection andspecification of specific requirements when ordering valves.

Valve types and configurations 
2.1 Valve types
2.1.1 Gate valves
Typical configurations for gate valves with flanged and welding ends are shown, for illustration purposes only, inFigures 1 and 2. Gate valves shall have an obturator which moves in a plane perpendicular to the direction of flow. The gate can beconstructed of one piece for slab-gate valves or of two or more pieces for expanding-gate valves. Gate valves shall be provided with a back seat or secondary stem sealing feature in addition to the primary stem seal.

2.1.2 Lubricated and non-lubricated plug valves Typical configurations for plug valves with flanged and welding ends are shown, for illustration purposes only, inFigure 3. Plug valves shall have a cylindrical or conical obturator which rotates about an axis perpendicular to the direction offlow.

2.1.3 Ball valves Typical configurations for ball valves with flanged or welding ends are shown, for illustration purposes only, inFigures 4, 5 and 6. Ball valves shall have a spherical obturator which rotates on an axis perpendicular to the direction of flow.

2.1.4 Check valves Typical configurations for check valves are shown, for illustration purposes only, in Figures 7 to 11. Check valvesmay also be of the wafer check valve. Check valves shall have an obturator which responds automatically to block fluid in one direction.

2.2 Valve configurations
2.2.1 Full-opening valves Full-opening valves shall be unobstructed in the fully opened position and have an internal bore as specified inTable 1. There is no restriction on the upper limit of valve bore sizes. Full-opening through-conduit valves shall have a circular bore in the obturator that will allow a sphere with a nominalsize not less than that specified in Table 1 to pass. Welding-end valves may require a smaller bore at the welding end to mate with the pipe.

2.2.2 Reduced-opening valves The internal bore of reduced-opening valves shall be less than the internal bore specified in Table 1.

Wenzhou Valve Manufacturers

Zhejiang Relia Valve Co., Ltd.Location: Yongjia County, Wenzhou
Web: www.reliavalve.com

Wenzhou Tianzheng Valve Co., Ltd. Location: Yongjia County, Wenzhou
Web: www.tianzheng-valve.com

Wenzhou Zhipeng Valve Co., Ltd. Location: Longwan County, Wenzhou
Web: www.cnzpv.com

Wenzhou Rotork Valve Automation Co., Ltd. Location: Yongjia County, Wenzhou
Web: www.zjrotork.com

Wenzhou Zhongjin Valve Co., Ltd. Location: Longwan County, Wenzhou
Web: www.zhongjinchina.com

API 600 Trim Number Chart

API 600 trim number chart

TRIM No.MATERIALSEATDISCBACK SEATSTEM
1
410
410
410
410
410
2
304
304
304
304
304
3
F310
310
310
310
310
4 *
Hard 410
Hard 410
Hard 410
410
410
5
Hard faced
Stellite
Stellite
410
410
5A
Hard faced
Ni-Cr
Ni-Cr
410
410
6
410 and Cu-Ni
Cu-Ni
410
410
410
7*
410 and Hard 410
Hard 410
Hard 410
410
410
8
410 and Hard faced
Stellite
410
410
410
8A
410 and Hard faced
Ni-Cr
410
410
410
9
Monel
Monel
Monel
Monel
Monel
10
316
316
316
316
316
11
Monel and Hard faced
Stellite
Monel
Monel
Monel
12
316 and Hard faced
Stellite
316
316
316
13
Alloy 20
Alloy 20
Alloy 20
Alloy 20
Alloy 20
14
Alloy 20 and Hard faced
Stellite
Alloy 20
Alloy 20
Alloy 20
15
304 and Hard faced
Stellite
Stellite
304
304
16
316 and Hard faced
Stellite
Stellite
316
316
17
347 and Hard faced
Stellite
Stellite
347
3477
18
Alloy 20 and Hard faced
Stellite
Stellite
Alloy 20
Alloy 20

* The seats shall be 750BHN Min.
E.g.:
API 600 Cast Steel Gate valve, WCB body, API 600 Trim no. 5 means the seat: A105+Stelite, disc: WCB+Stelite, Stem: ASTM A182 F6a
API 600 Gate valve, WCB body, API 600 Trim no. 1 means the seat: A105+13Cr, disc: WCB+13Cr, Stem: ASTM A182 F6a
API 600 Gate valve, WCB body, API 600 Trim no. 8 means the seat: A105+Stelite, disc: WCB+13Cr, Stem: ASTM A182 F6a

API Valves Standard

An overview of the American Petroleum Institute - API valves standard

API SPEC 6D
Specification for Pipeline Valves. API Specification 6D is an adoption of ISO 14313: 1999, Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves. This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems.

API 600
Bolted Bonnet Steel Cast Steel Gate Valves for Petroleum and Natural Gas Industries - Modified National Adoption of ISO 10434:1998.

API 599
Metal Plug Valves - Flanged, Threaded and Welding Ends. A purchase specification that covers requirements for metal plug valves with flanged or butt-welding ends, and ductile iron plug valves with flanged ends, in sizes NPS 1 through NPS 24, which correspond to nominal pipe sizes in ASME B36.10M. Valve bodies conforming to ASME B16.34 may have flanged end and one butt-welding end. It also covers both lubricated and nonlubricated valves that have two-way coaxial ports, and includes requirements for valves fitted with internal body, plug, or port linings or applied hard facings on the body, body ports, plug, or plug port.

API 602
Compact Steel Gate Valves - Flanged, Threaded, Welding, and Extended-Body Ends. The standard covers threaded-end, socket-welding-end, butt-welding-end, and flanged-end compact carbon steel gate valves in sizes NPS4 and smaller.

API 603
Corrosion-Resistant, Bolted Bonnet Gate Valves - Flanged and Butt-Welding Ends. The standard covers corrosion-resistant bolted bonnet gate valves with flanged or butt-weld ends in sizes NPS 1/2 through 24, corresponding to nominal pipe sizes in ASME B36.10M, and Classes 150, 300, and, 600, as specified in ASME B16.34.

API 609
Butterfly Valves: Double Flanged, Lug- and Wafer-Type. The standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-base alloy, or special alloy butterfly valves that provide tight shutoff in the closed position and are suitable for flow regulation.

API STD 594
Check Valves: Flanged, Lug, Wafer and Butt-welding. API Standard 594 covers design, material, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for two types of check valves.

API 598
Valve Inspection and Testing. The standard covers inspection, supplementary examination, and pressure test requirements for both resilient-seated and metal-to-metal seated gate valve, globe valve, plug valve, ball valve, check valve, and butterfly valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer's plant.

API 607
Fire Test for Soft-Seated Quarter Turn Valves. The standard covers the requirements for testing and evaluating the performance of straightway, soft-seated quarter-turn valves when the valves are exposed to certain fire conditions defined in this standard. The procedures described in this standard apply to all classes and sizes of such valves that are made of materials listed in ASME B16.34.

API 6FA
Specification for Fire Test for Valves. The standard covers the requirements for testing and evaluating the performance of API Spec 6A and Spec 6D valves when exposed to specifically defined fire conditions.

ANSI/API 608
Metal Ball Valves - Flanged and Butt-Welding Ends. The standard covers Class 150 and Class 300 metal ball valves that have either butt-welding or flanged ends and are for use in on-off service.
As professional China valve manufacturer , Relia is always supplying the valves meeting the highest standard.

2016年6月28日星期二

Forged Steel Trunnion Mounted Ball Valves

Descriptions
China Forged Steel Trunnion Ball ValveManufacturer, Trunnion Mounted, Ball Valve, 3 Pc Body




Forged Steel Trunnion Mounted Ball Valves Features
• Upstream sealing
• Self relieving seat
• Double block and bleed
• Fire safe design, Anti-static device, Blow-out proof stem
• Injection Port for seat & stem, Drain and Vent Ports
• 3-Pc split body, Bolted Body

Forged Steel Trunnion Mounted Ball Valves Drawings




Forged Steel Trunnion Mounted Ball Valves Material List
No.
Part Name
Carbon Steel
Stainless Steel
Stainless Steel
1
Body
ASTM A105
A182 F304
A182 F316
2
Ball
A105+ENP
A182 F304
A182 F316
3
Stud
A193 B7
A320 B8
A320 B8M
4
Anti-fire packing
Graphite
Graphite
Graphite
5
Seat
PTFE/NYLON/PEEK/PPL/Delrin
6
Support ring
A105+ENP
A182 F304
A182 F316
7
O-ring
VITON
VITON
VITON
8
Spring
17-7PH
17-7PH
17-7PH
9
O-ring
VITON
VITON
VITON
10
Anti-fire gasket
S.S+Graphite
SS+Graphite
SS+Graphite
11
Bonnet
ASTM A105
A182 F304
A182 F316
12
Anti-static device
Combined parts
Combined parts
Combined parts
13
Stem
A182 F6a
A182 F304
A182 F316
14
Flat Key
ANSI 1045
ANSI 1045
ANSI 1045
15
Thrust bearing
PTFE
PTFE
PTFE
16
Sliding bearing
Steel+PTFE
Steel+PTFE
Steel+PTFE
17
O-ring
VITON
VTION
VTION
18
O-ring
VITON
VITON
VITON
19
Anti-fire gasket
S.S+Graphite
SS+Graphite
SS+Graphite
20
Seal gland
A105+ENP
A182 F304
A182 F316
21
Cap screw
A193 B7
A320 B8
A320 B8M
22
Packing
Graphite
Graphite
Graphite
23
Connection plate
ASTM A105
A182 F304
A182 F316
24
Screw
A193 B7
A320 B8
A320 B8M
25
Pin
ANSI 1035
ANSI 1035
ANSI 1035
26
Thrust bearing
PTFE
PTFE
PTFE
27
Lower cover
A105+ENP
A182 F304
A182 F316
28
Stud
A193 B7
A320 B8
A320 B8M
29
Hexagon nut
A194 2H
A194 8
A194 8M
30
Drainage valve
Combined parts
Combined parts
Combined parts
31
Air release valve
Combined parts
Combined parts
Combined parts
32
Sealant inject valve
Combined parts
Combined parts
Combined parts
33
Check valve
Combined parts
Combined parts
A194 8M
34
Hexagon nut
A194 2H
A194 8
A194 8M

Forged Steel Trunnion Mounted Ball Valves Material List
No.
Part Name
Carbon Steel


1
Body
ASTM A105
A182 F304
A182 F316
2
Bonnet
ASTM A105
A182 F304
A182 F316
3
Ball
A105+ENP
A182 F304
A182 F316
4
Stem
A182 F6a
17-4PH
17-4PH
5
Seat
PTFE/NYLON/PEEK/PPL/Delrin
6
Seat ring
A105+ENP
A182 F304
A182 F316
7
Bearing holder
A105+ENP
A182 F304
A182 F316
8
Seal gland
A105+ENP
A182 F304
A182 F316
9
Packing
Graphite
Graphite
Graphite
10
Connection plate
ASTM A105
A182 F304
A182 F316
11
Pin
ANSI 1035
ANSI 1035
ANSI 1035
12
Pin
ANSI 1035
ANSI 1035
ANSI 1035
13
Flat key
ANSI 1045
ANSI 1045
ANSI 1045
14
Thrust bearing
PTFE
PTFE
PTFE
15
Thrust bearing
PTFE
PTFE
PTFE
16
Sliding bearing
Steel+PTFE
Steel+PTFE
Steel+PTFE
17
Spring
17-7PH
17-7PH
17-7PH
18
O-ring
VITON
VITON
VITON
19
O-ring
VITON
VITON
VITON
20
O-ring
VITON
VITON
VITON
21
O-ring
VITON
VITON
VITON
22
Anti-fire packing
Graphite
Graphite
Graphite
23
Stud
A193 B7
A320 B8
A320 B8M
24
Hexagon nut
A194 2H
A194 8
A194 8M
25
Screw
A193 B7
A320 B8
A320 B8M
26
Screw
A193 B7
A320 B8
A320 B8M
27
Injection valve
Combined parts
Combined parts
Combined parts
28
Injection valve
Combined parts
Combined parts
Combined parts
29
Check valve
Combined parts
Combined parts
Combined parts
30
Air release valve
Combined parts
Combined parts
Combined parts
31
Drain valve
Combined parts
Combined parts
Combined parts
32
O-ring
Combined parts
Combined parts
Combined parts
33
Anti-fire gasket
ASTM A105
A182 F304
A182 F316

Remarks:
1. Select different materials for different working temperature and media.
2. Trim materials and recommended service coverage referred to Appendix.


Forged Steel Trunnion Mounted Ball Valves Standard
• Design - API 6D/ASME B16.34
• Face to Face - ASME B16.10/API 6D
• End to End - ASME B16.10/API 6D
• BW End - ASME B16.25
• Test - API 598/BS 6755
• Fire Safe Design - API 607/API 6FA
• Special - NACE MR-01-75


Cast Steel Trunnion Mounted Ball Valves

Cast Steel Trunnion Mounted Ball Valves
• Upstream sealing, Self relieving seat
• Double block and bleed
• Fire safe design, Anti-static device, Blow-out proof stem
• Injection Port for seat & stem, Drain and Vent Ports
• 2-P or 3-Pc split body, Bolted Body
Cast Steel Trunnion Mounted Ball Valves
• Design - API 6D/ASME B16.34
• Face to Face - ASME B16.10/API 6D
• End to End - ASME B16.10/API 6D
• BW End - ASME B16.25
• Test - API 598/BS 6755
• Fire Safe Design - API 607/API 6FA
• Special - NACE MR-01-75

Cast Steel Trunnion Ball Valves Drawing


Material List of Cast Steel Trunnion Ball Valves
No.
Part Name
Carbon Steel
Stainless Steel
1
Body
A216 WCB
A351 CF8
A351 CF8M
2
Bonnet
A216 WCB
A351 CF8
A351 CF8M
3
Ball
A105+ENP
A182 F304
A182 F304M
4
Anti-fire packing
Graphite
Graphite
Graphite
5
Seat
PTFE/NYLON/MOLON/PEEK/PPL
6
Seat support ring
A105+ENP
A182 F304
A182 F304M
7
O-ring
VITON
VITON
VITON
8
Spring
17-7PH
17-7PH
17-7PH
9
O-ring
VITON
VITON
VITON
10
Anti-fire gasket
SS+Graphite
SS+Graphite
SS+Graphite
11
Hexagon nut
A194 2H
A194 8
A194 8M
12
Sealant injection valve
Combined parts
Combined parts
Combined parts
13
Check valve
Combined parts
Combined parts
Combined parts
14
Air release valve
Combined parts
Combined parts
Combined parts
15
Anti-static device
Combined parts
Combined parts
Combined parts
16
Stud
A193 B7
A320 B8
A320 B8M
17
Flat key
ANSI 1905
ANSI 1045
ANSI 1045
18
Stem
A182 F6a
17-4PH
17-4PH
19
Sliding bearing
Steel+PTFE
Steel+PTFE
Steel+PTFE
20
Thrust bearing
PTFE
PTFE
PTFE
21
O-ring
VITON
VITON
VITON
22
O-ring
VITON
VITON
VITON
23
Anti-fire gasket
SS+Graphite
SS+Graphite
SS+Graphite
24
Seal gland
A105+ENP
A182 F304
A182 F316
25
Screw
A193 B7
A320 B8
A320 B8M
26
Packing
Graphite
Graphite
Graphite
27
Packing gland
A182 F6a
A182 F6a
A182 F6a
28
Lower cover
A105+ENP
A182 F304
A182 F304
29
Stud
A193 B7
A320 B8
A320 B8M
30
Hexagon nut
A1942H
A194 8
A194 8M
31
Drain valve
Combined parts
Combined parts
Combined parts

Remarks
• Body Material: WCB, LCB, LCC, CF8, CF8M, CF3, CF3M, MONEL etc. 
• Seat Material: PTFE, Nylon, PEEK, PPL, Molon, Develon, Delrin, RPTFE 
• O-ring Seals: NBR, Viton A, Viton AED, EPDM, Viton B 
• Stem/Ball/Seat Ring: 304, A105+ENP, 17-4PH, 4140+ENP, 316, 304L, 316L, LF2+ENP, 13Cr/Hard Cr, F51 
• End Connection - Flange Ends/Butt Welding Ends

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