The document provides information on various types of valves including gate valves, globe valves, check valves, and forged steel valves. It describes the key features such as construction, end connections, standards, and material of construction. Gate valves are outside screw and yoke type with bolted bonnet construction. Globe valves have a disc and stem design. Check valves prevent reverse flow using a swing type disc. Forged steel valves are compact in size from 15-50mm and have screwed or socket weld end connections. Material specifications meet standards like ASTM, ASME, and BS. Dimensions and pressure ratings are provided for different valve sizes and classes.

1. Winning Together
Gate
No. 02551-2005-AQ-BOM-NABCB
Globe
Check
Valves

2. GATE VALVES
Expert make Cast Steel Flex Gate Valves are Tight Sealing, Easy Operation, Isolation valves for
liquid and gaseous fluids over a wide range of line pressures and temperatures.
-
Self adjusting flexible wedge assures tight sealing and minimizes stress
concentration under varied service conditions.
-
Stem-wedge thrust closer to wedge centre for accurate wedge movement
-
Long guide ribs in the body to minimize seat wear.
Gate valves are of rising stem, outside, screw and yoke (OS & Y) and with Bolted Bonnet
construction. The rising stem indicates open or close position of the valve. The outside screw
ensures easy lubrication and prevents corrosion and erosion by line fluids.
On request, valves can be supplied with special features like NACE Requirement, Radiography,
Magnetic Particle Test, LGC Test and for Oxygen service etc.
BODY AND BONNET
GLAND ARRANGEMENT
The body is designed for strength to meet the operating
The stuffing box holds a adequate packing rings to enhance gland
conditions and contoured to minimize erosion and resistance to
tightness and increases the life of packing rings.
flow. The bonnet is provided with renewable back seat
arrangement.
END CONNECTION :
Standard valves are offered with flanged ends (butt weld ends
FLEXIBLE WEDGE
provided on request) to the following standards :
The one piece, case flexible wedge minimizes stress
concentration and assures tight sealing over a wide range of
different operating temperature and pressure conditions.
Flanged
-
ASME B 16.5 Raised Face
Butt Weld
-
ASME B 16.25 to suit the corresponding
pipe schedule.
BODY SEAT RING
The seat ring is seal welded to provide a bubble tight joint.
STANDARDS
Design
BACK SEAT ARRANGEMENT
The back seat is designed to relieve back pressure on the stem
-
API 600
Face to face / dimensions
-
ASME B 16.10
Testing
-
API 598
packing when fully seated.
Valves can also be offered with IBR certification.
SEATING SURFACE
Globe valves can be offered with stellite seat, if specified. Stellited
ACCESSORIES
seat ring provides increased resistance to ware, abrasion and
Valves can be supplied with accessories like extended Stem
erosion of the sealing surface.
Arrangement, Gear Operation, Pneumatic and Electric Actuators,
Chain Wheel Arrangement, Drain Plug and By-Pass Arrangement.

3. Class-150
Size
Class-300
mm
A
B
C
A
B
C
15
108
210
100
140
210
100
20
117
215
100
152
215
100
25
127
200
150
165
250
150
40
165
315
200
190
300
200
50
178
360
200
216
345
200
65
190
410
200
241
425
250
80
203
465
250
283
460
250
100
229
550
250
305
550
300
125
254
650
300
381
685
350
150
267
735
300
403
790
350
200
292
1000
350
419
990
450
250
330
1260
400
457
1230
450
300
356
1450
400
502
1475
500
Approx.
Material of Construction
Body And Bonnet
-
ASTM A 216 Gr. WCB, ASTM A 352 Gr. LCB. ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Wedge & Seat Ring
-
Sizes 15mm to 100mm - ASTM A 217 Gr. CA15, 125mm and above WCB with 13%
Chrome Overlay. ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Stem, Gland & Bonnet Bush
-
ASTM A 276 Type 410 / 304 / 316
Yoke Sleeve
-
Ni-Resist ASTM A 439 Gr. D2
Gland Packing
-
Graphite / Grafoil / PTFE
Stud / Nut
-
ASTM A 193 Gr. B7 / ASTM A 194 Gr. 2H
Hand Wheel
-
Carbon Steel
NOTE :
n dimensions are in mm. unless otherwise specified and are indicative only.
All
n the process of continuous improvement of our products, the data given herein is subject to change.
In
n
Please
specify the required size, material of construction, type of drive arrangement (if any), flange standard and quantity
clearly at the time of placing the order.

4. GLOBE VALVES
Expert make valves are tight sealing, easy operation, regulation valves for liquid and
gaseous fluids over a wide range of line pressures and temperatures.
Globe valves are of outside screw & yoke (OS &Y) and with Bolted Bonnet Construction.
The outside screw ensures easy lubrication and prevents corrosion and erosion by line
fluids.
On request, valves can be supplied with special features like NACE Requirement,
Radiography, Magnetic Particle Test, LGC Test and for Oxygen service etc.
BODY AND BONNET
GLAND ARRANGEMENT
The body is designed for strength to meet the operating
The stuffing box holds a minimum of 6 packing rings to enhance
conditions and contoured to minimize erosion and resistance to
gland tightness and increases the life of packing rings.
flow. The bonnet is provided with renewable back seat
arrangement.
DISC AND STEM
END CONNECTION :
The disc provides a fine bearing on a taper seat for tight sealing
Standard valves are offered with flanged ends (butt weld ends
over a wide range of differential pressures. As the seating
provided on request) to the following standards
between disc and body seat is a narrow line contact, tight sealing
can be achieved even if any foreign particle gets stuck to the
:Flanged
-
ASME B 16.5 Raised Face
Butt Weld
-
ASME B 16.25 to suit the
seating area. The disc and stem are held together by a disc nut
with allowance for disc to swivel. The disc nut is tack welded to
prevent loosening in service.
corresponding pipe schedule.
BODY SEAT RING
The seat ring is seal welded to provide a bubble tight joint.
STANDARDS
Design
-
BS-1873
BACK SEAT ARRANGEMENT
Face to face /dimensions
-
ASME B 16.10
The back seat is designed to relieve back pressure on the stem
Testing
-
BS 6755 Part I (EN 12266-1)
packing when fully seated.
Valves can also be offered with IBR certification.
SEATING SURFACE
Globe valves can be offered with stellite seat, if specified. Stellited
ACCESSORIES
seat ring provides increased resistance to ware, abrasion and
Valves can be supplied with accessories like Extended Stem
erosion of the sealing surface.
Arrangement, Gear Operation, Pneumatic & Electric Actuators,
Chain Wheel Arrangement, Drain Plug etc.

5. Class-150
Size
Class-300
mm
A
B
C
A
B
C
15
108
205
100
152
205
100
20
117
210
100
178
210
100
25
127
230
150
203
230
150
40
165
260
200
229
260
200
50
203
295
200
267
295
200
65
216
290
200
292
351
250
80
241
345
250
318
360
250
100
292
349
300
356
413
300
125
356
410
300
400
471
300
150
406
500
300
444
567
400
200
495
565
400
559
800
600
250
622
710
500
622
1235
700
300
698
780
600
711
1220
750
Material of Construction
Body And Bonnet
-
ASTM A 216 Gr. WCB, ASTM A 352 Gr. LCB. ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Disc & Seat Ring
-
Sizes 15mm to 100mm - ASTM A 217 Gr. CA15, 125mm and above WCB with
13% Chrome Overlay. ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Stem, Gland & Bonnet Bush
-
ASTM A 276 Type 410 / 304 / 316
Yoke Sleeve
-
Ni-Resist ASTM A 439 Gr. D2
Gland Packing
-
Graphite / Grafoil / PTFE
Stud / Nut
-
ASTM A 193 Gr. B7 / ASTM A 194 Gr. 2H
Hand Wheel
-
Carbon Steel
NOTE :
n dimensions are in mm. unless otherwise specified and are indicative only.
All
n the process of continuous improvement of our products, the data given herein is subject to change.
In
n
Please
specify the required size, material of construction, type of drive arrangement (if any), flange standard and quantity
clearly at the time of placing the order.

6. SWING CHECK VALVES
Expert make Cast Steel Swing Check Valves are used in Pipelines with Liquid and Gaseous Fluids over a wide
rang of line pressures and temperatures.
-
Swing type Disc for through flow with minimum pressure drop.
-
Rugged Disc - Hinge Connection
-
Bolted Body - Cover Joint
On request, valves can be supplied with special features like NACE Requirement, Radiography, Magnetic Particle
Test, LGC Test and for Oxygen service etc.
BODY AND COVER
The body is designed for strength to meet operating conditions and
contoured to minimize erosion and resistance to flow. The full port area is
maintained from the inlet port to the body seat ring to minimize turbulence.
The outlet side of the body is designed to maximize the flow even when the
disc swings partially.
Approx.
DISC
The disc is opened and sustained in open position by the velocity pressure of
the fluid and closed by the force of gravity. Seating load and resultant
tightness is aided by back pressure in the line.
BODY SEAT RING
The body seat ring is seal welded to the body avoiding leakage through the
path between the seat ring and the body. The seating surfaces are ground
and lapped.
SEATING SURFACE
Check valves can be offered with stellite seat, if specified. Stellited seat ring
provides increased resistance to ware, abrasion and erosion of the sealing
surface.
Material of Construction
Body and Cover
- ASTM A 216 Gr. WCB, ASTM A 352 Gr. LCB,
ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Disc & Ring
- Sizes 40 mm to 100 mm - ASTM A 217 Gr. CA 15
END CONNECTION :
125 mm & above WCB with 13% Chrome overlay.
Valves are offered with flanged and butt weld ends to the following standards :
ASTM A 351 Gr. CF8 / CF8M / CF3 / CF3M
Gasket
Flanged
-
ASME B 16.5 Raised Face
Butt Weld
-
- Spiral Wound SS 304 / 316 / Graphite
Stud / Nut
- ASTM A 193 Gr. B7 / ASTM A 194 Gr. 2H
ASME B 16.25 to suit the
corresponding pipe schedule.
Size
Class-150
Class-300
BS 1868
mm
A
B
A
B
STANDARDS
Design
-
Face to face /dimensions
-
ASME B 16.10
40
165
95
241
95
Testing
-
BS 6755 Part I (EN 12266-1)
50
203
115
267
120
65
216
120
292
132
80
241
135
318
150
100
292
150
356
170
125
330
170
400
195
150
356
195
444
220
200
495
220
533
255
250
622
260
622
305
300
698
310
711
350
Valves can also be offered with IBR certification.
INSTALLATION
Swing Check valves are used to prevent reversal of flow in horizontal or
vertical pipelines. In vertical pipelines or for any angle from horizontal to
vertical, they can be used for upward flow only. The velocity pressure should
be sufficient to hold the Disc against stop. Pulsating flows as obtained at the
outlet of a reciprocating pump / compressor would cause disc chatter and
hence use in such application should be avoided.

7. FORGED STEEL VALVES
Expert make Forged Steel Valves are rugged and compact design and are available in the size range of 15 mm to
50 mm. The valves are manufactured in accordance with BS-5352 and API-602 standards.
n
The valves
are available in Screwed End & Socket Weld End Connections.
n
The valves
are available with IBR Certification on request. The valves are also available with extended stem.
n
The Forged
Steel valves are used in Refineries, Petrochemicals Industries, Fertilizer Plants, Thermal Power
Stations, Other Processing Industries.
GATE VALVE
GLOBE VALVE
CHECK VALVE
Design Std. : API 602 / BS 5352
Design Std. : BS 5352
Design Std. : BS 5352
Testing Std. : API 598 / BS 5146.
Testing Std. : BS 5146.
n
Outside
screw and yoke type bolted bonnet
construction.
n
Body
n
Accurately
Uniquely
n
n
Easy
effect.
access to stuffing box.
n
Self-aligning
gland and follower.
n
Taper
machined gate and
n
Taper
gland and follower.
seated renewable seat ring with perfect
matching of mating parts to assure leak
tightness.
Seating and leak tightness.
n piston assuring accurate return
Guided
tightness.
guided in body with
n
Streamlined
accurately machined guide ways.
n
Rolled
n
Back
to seat ring to achieve leak tightness.
flow passages to minimise
n
Streamlined
pressure losses and erosion.
n
Back
in body seat rings.
Plug type disc and shoulder
seated renewable seat ring for positive
Plug type disc and shoulder
seating surfaces to assure leak
n
Wedge
designed piston lift check
valve incorporating self cushioning
and bonnet made from quality
forgings.
access to stuffing box.
n
Self-aligning
screw and yoke type bolted
bonnet construction.
n
Body
and bonnet made from quality
forgings.
n
Easy
Outside
n
Testing Std. : BS 5146.
flow passages designed to
minimise pressure losses and erosion.
seating arrangement provided to
n
Horizontal
type.
bonnet.
seating arrangement provided
to bonnet.
Size
Gate Valve
Globe Valve Check Valve
mm
Material
of
Construction
B
85
170
85
165
85
54
90
185
90
175
90
66
103
194
103
195
103
72
32
128
285
128
270
128
102
128
285
128
270
128
102
50
+5
A
40
+5
B
25
Approx.
A
20
Approx.
B
15
Approx.
A
140
295
140
280
140
108
+5
Body and Bonnet / Cover
-
ASTM A 105, F 304, F 316
Wedge / Disc
-
ASTM A 217 Gr. CA15 / ASTM A 351 Gr. CF8 / CF8M
Stem & Gland
-
ASTM A 276 Type 410 / 304 / 316
Gland Packing
-
PTFE / Graphite / Grafoil
Gasket
-
Spiral Wound SS 304 / 316 / Graphite
Stud / Nut
-
ASTM A 193 Gr. B7 / ASTM A 194 Gr. 2H
Hand Wheel
-
Malleable Iron / Steel

8. Chemical Compositions & Mechanical Properties
Carbon Steel
ASTM
A216
WCB
ASTM
A216
WCC
LCB
Carbon
0.30
0.25
0.30
Manganese
1.00
1.20
1.00
Phosphorus
0.40
0.04
Sulphur
0.045
Silicon
Alloy Steel
Stainless Steel
LCC
ASTM
A 217
WC6
ASTM
A217
WC9
0.25
0.05 - 0.20
0.05 - 0.18
1.20
0.50 - 0.80
0.40 - 0.70
0.04
0.04
0.04
0.04
0.045
0.045
0.045
0.045
0.60
0.60
0.60
0.60
0.60
Nickel
0.50
0.50
0.50
0.50
-
-
-
-
8.00 - 11.00
9.00 - 12.00
Chromium
0.50
0.50
0.50
0.50
1.00 - 1.50
2.00 - 2.75
4.00 - 6.50
8.00 - 10.00
18.00 - 21.00
18.00 - 21.00
Molybdenum
0.20
0.20
0.20
0.20
0.45 - 0.65
0.90 - 1.20
0.45 - 0.65
0.90 - 1.20
0.50
2.00 - 3.00
Copper
0.30
0.30
0.30
0.30
0.50
0.50
0.50
0.50
-
-
Vanadium
0.03
0.03
0.03
0.03
-
-
70 - 95
70
65
70 - 95
70
70
90 - 115
90 - 115
70
70
Yield Strength ksi minimum
36
40
35
40
40
40
60
60
30
30
Elongation in 2"% minimum
22
22
24
22
20
20
18
18
35
30
Reduction of Area % minimum
35
35
35
35
35
35
35
35
-
-
Element and Properties
Tensile Strength ksi minimum
ASTM A 352
ASTM
A 217
C5
ASTM
A 217
C12
ASTM
A 351
CF8
ASTM
A 351
CF8M
0.20
0.20
0.80
0.80
0.40 - 0.70
0.35 - 0.65
1.50
1.50
0.04
0.40
0.04
0.04
0.045
0.045
0.045
0.04
0.04
0.60
0.75
1.00
2.00
1.50
Note : The percentage (%) shown on the elements is the maximum except where ranges are indicated.
w w w . e x p e r t v a l v e s . c o m
Expert reserves the right to change product designs and specification without notice.
Printed in Sept. 2007
EXPERT ENGINEERING ENTERPRISES
C-13, Industrial Estate, BELGAUM - 590 008. KARNATAKA STATE, INDIA.
Tel. : 91-831-2407140 / 142 / 144 Fax : 91-831-2407141
E-mail : mail@expertvalves.com
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MUMBAI
NEW-DELHI
HYDERABAD
BANGALORE
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