3 R 25 US • 12/2016 NELES® R-SERIES SEGMENT VALVE Flanged RE and Wafer RE1 Metso's Neles RE series control valves are economical, high performance valves in a quarter- turn design. They are offered with a variety of trim options from standard and low Cv trims for general applications to noise/cavitation Q-Trim™ for reducing aerodynamic noise and preventing cavitation. Standard units are equipped with either diaphragm or cylinder actuators and ND9000 intelligent valve controllers for precise control, reliability and performance monitoring on-line. FEATURES Integral body construction □ Integrally flanged R-Series valves feature one piece body construction with no flange rings, inserts or end caps to create potential leak paths, even if the valve is subjected to pipe bending forces. Seating capabilities are totally unaffected by pipeline forces, which assures reliable valve operation. Accurate Control □ Carefully designed V-ported segmented ball, low torque requirements and backlash-free movement results in exceptional control performance. This design provides steady and gental contact between the seat and segment at all times to minimize friction while at the same time providing exceptional control charac- teristics. Bearings are located inside the valve body providing larger bearing areas, lower bearing loads and longer bearing life. Safety and Environmental □ Rotary operation reduces fugitive emissions dramati- cally compared to sliding stem designs. The R-series stem seal design meets the US clean Air Act and Ger- man TA-Luft requirements. Durable metal seat □ The seat of the R-series V-port segment valve is firm and uniquely durable. The seat is designed in such a way that its sealing surface is not located directly in the flow stream. This gives the seat an extended service life. The working principle is a pressure-aided seat which enables good sealing properties at a low pres- sure difference. The seat is located inside the valve, which prevents forces from the pipe system influenc- ing the sealing effect. Two-way tight seat is available as an option. Economical □ Low torque operation reduces wear, resulting in better reliability. In addition, standard designs carry hard chromium facing on the segment and a stellited seat, which has been designed to avoid flow impingement. Together with a low load bearing design and liveloaded packing, operational life is improved and maintenance needs are minimized. Low torque com- bined with a well integrated actuator design provides a lower cost valve assembly. Low flow and noise attenuation/cavitation Q-Trim options □ 1" valves feature five different segment sizes. They extend the valves’ application range to very low-flow and high accuracy services, such as additive and color- ing lines, pilot plants etc. Cavitation and aerodynamic noise are reduced with the patented Q-Trim option. This self-cleaning design handles contaminated flows (impure steam, river water, etc.) without plugging. Reliable actuators □ Quadra-Powr® spring diaphragm operators provide safe, reliable operation even with minimal supply pres- sures are available. B-Series piston actuators are availa- ble in either double acting or spring return versions.
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NELES® R-SERIES SEGMENT VALVE Flanged RE and Wafer RE1 · Low torque operation reduces wear, resulting in better reliability. In addition, standard designs carry hard chromium facing
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3 R 25 US • 12
NELES® R-SERIES SEGMENT VALVE Flanged RE and Wafer RE1
Metso's Neles RE series control valves are economical, high performance valves in a quarter-turn design. They are offered with a variety of trim options from standard and low Cv trims for general applications to noise/cavitation Q-Trim™ for reducing aerodynamic noise and preventing cavitation.Standard units are equipped with either diaphragm or cylinder actuators and ND9000 intelligent valve controllers for precise control, reliability and performance monitoring on-line.
FEATURES
Integral body construction□ Integrally flanged R-Series valves feature one piece
body construction with no flange rings, inserts or endcaps to create potential leak paths, even if the valve issubjected to pipe bending forces. Seating capabilitiesare totally unaffected by pipeline forces, which assuresreliable valve operation.
Accurate Control□ Carefully designed V-ported segmented ball, low
torque requirements and backlash-free movementresults in exceptional control performance. This designprovides steady and gental contact between the seatand segment at all times to minimize friction while atthe same time providing exceptional control charac-teristics. Bearings are located inside the valve bodyproviding larger bearing areas, lower bearing loadsand longer bearing life.
Safety and Environmental□ Rotary operation reduces fugitive emissions dramati-
cally compared to sliding stem designs. The R-seriesstem seal design meets the US clean Air Act and Ger-man TA-Luft requirements.
Durable metal seat□ The seat of the R-series V-port segment valve is firm
and uniquely durable. The seat is designed in such away that its sealing surface is not located directly in theflow stream. This gives the seat an extended servicelife. The working principle is a pressure-aided seatwhich enables good sealing properties at a low pres-sure difference. The seat is located inside the valve,which prevents forces from the pipe system influenc-ing the sealing effect. Two-way tight seat is available asan option.
Economical□ Low torque operation reduces wear, resulting in better
reliability. In addition, standard designs carry hardchromium facing on the segment and a stellited seat,which has been designed to avoid flow impingement.Together with a low load bearing design andliveloaded packing, operational life is improved andmaintenance needs are minimized. Low torque com-bined with a well integrated actuator design providesa lower cost valve assembly.
Low flow and noise attenuation/cavitation Q-Trim options
□ 1" valves feature five different segment sizes. Theyextend the valves’ application range to very low-flowand high accuracy services, such as additive and color-ing lines, pilot plants etc. Cavitation and aerodynamicnoise are reduced with the patented Q-Trim option.This self-cleaning design handles contaminated flows(impure steam, river water, etc.) without plugging.
Reliable actuators□ Quadra-Powr® spring diaphragm operators provide
safe, reliable operation even with minimal supply pres-sures are available. B-Series piston actuators are availa-ble in either double acting or spring return versions.
/2016
M E T S O
2 TECHNICAL BULLETIN 12/16
3 R 2 5 U S
A SEAT
E SEAT
T SEAT
1S SEAT
S SEAT(standard construction)
75
86
4
4
65
4
4B5
4A6
4
12
14
15
22
3
1311
2532
24
30
20
16
16
35
3517
17
1
1910
26
45
6
9
RE150-800
RE025-100
18
DETAIL A
PARTS LIST (standard construction)*
1) Alternative materials* The parts are not in number order since certain parts have dedicated part numbers.
Part NameBODY MATERIAL
Stainless steel Carbon steel 1 Body ASTM A351 gr. CF8M ASTM A216 gr. WCB
Temperature range-50 °C ... +260 °C / -58…+500 °F with soft bearings-50 °C ... +315 °C / -58…+600 °F with metal bearings in sizes 2" - 10"-50 °C ... +425 °C / -58…+800 °F with metal bearing and high temperature seats in sizes 2" - 10".
Valve body and seat testAll valves manufactured by Metso undergo pressure testing. Thetest pressure of R-series valve body is 1.5 x the pressure rating andthe standard test pressure of seat is 1.1 x the maximum permissi-ble shut-off pressure or lower depending on size and material.The test medium is water containing a corrosion inhibitor.Seat design options shown on the next page.
TECHNICAL SPECIFICATIONS
Maximum CV Coefficients for R-Series Valves
1) 100 % corresponds to 95° turning angle2) For Q-R-valves, 100 % corresponds to 90° turning angle
Size Metal Seat, S Q-Trim S Seat Metal Seat, 1S Q-Trim 1S Seat Soft Seat, T Q-Trim, T Seat Metal Seat, A Q-Trim, A Seat
Reduced Cv trims are available on the 1"valve to control very low flows with highaccuracy. The narrow orifice is a selfflushingdesign because the trim orifice is continuallyincreasing.
Q-trim valve trim for cavitation/noise abatement
Liquid cavitation and aerodynamic noiseproblems can be solved with the patentedQ-Trim valve trim. This design employs thetwo well-known principles of dividing thepressure drop into a series of small pressuredrops and of separating the flow stream intomany small jet streams. The use of these two
principles combined with the rotation of the attenuator elementsprovides a combination of cavitation/noise abatement with highrangeability, high capacity and the capability to handle impurefluids.
Erosion resistant version
This heavy duty erosion resistant designhandles contaminated flows and abra-sive media at a favorable cost/useablelife ratio. The seat is machined fromcobalt chromium alloy and the seatdesign is changed from normal toreverse flow for maximum abrasionresistance. This version should not beused for isolation service since the seat isnot in contact with the segment.
SEAT DESIGNSS Metal seat
T Soft seat
E Non-tight metal seat
1S 2-way tight metal seat
A High temp. metal seat
Seat: 316 SS + Cobalt based hard facing, sizes 1" - 32" / DN 25 - 800
Spring: Inconel 625
Seat seal: Filled PTFE lipseal / SS Elgiloy spring
Temp. Range: -50 °C... +315 °C / -58 °F …+600 °F
Service: General
Seat: 316 SS with PTFE + X-treme®, sizes 1" - 6"316 SS with PTFE + C25 % insert, sizes 8" - 32"
Seat: 316 SS + Cobalt based hard facing, sizes 1" - 32" / DN 25 - 800
Spring: Inconel 625
Seat seal: Viton GF
Temp. range: -30 °C... +200 °C / -22 °F …+392 °F
Service: General
Seat: A: SS 316 + Cobalt based hard facingA1: SS 316 + CrC facing (with K segment)
Spring: Inconel 625
Seat seal: Graphite
Temp. range: -50 °C... +425 °C, -58 °F... +800 °F
Service: General service
Size: NPS 2" - 10" / DN 50 - 250:
Note: Available with model code A only (11. sign)
S Metal seat
Flow direction
T Soft seat
Flow direction
E Non-tight metal seat
Flow direction
1S 2-way tight metal seat
Flow direction
A High temp. metal seat
Flow direction
N E L E S ® R - S E R I E S S E G M E N T V A L V E F l a n g e d R E a n d W a f e r R E 13 R 2 5 U S
Maximum operating pressure differential in shut-off service
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
bar
Temperature °C
CF8M
ASME 150
ASME 300
PN10
PN16
PN25
PN40
Temperature °F
PSI
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
bar
Temperature °C
ASME 150
ASME 300
PN10
PN16
PN25
PN40
WCBTemperature °F
PSI
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350
Pres
sure
Bar
Temperature °C
AISI 329 Shaft
DN25-80/1"-3"
DN100-150/4"-6"
DN200-250/8"-10"DN300-700/12"-28"
Temperature °F
PSI
145
290
435
580
725
870122 212 302 392 482 572 662
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
17-4PH Shaft
DN25-80/1"-3"
DN100-150/4"-6"
DN200-250/8"-10"
DN300-700/12"-28"
Temperature °F
PSI
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
BODY PRESSURE RATINGS
TECHNICAL BULLETIN 12/16 5
M E T S O
6
3 R 2 5 U S
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
Max operating pressure differential in control service, REopening range 0 %-70 %
DN25-80/1"-3"
DN100-150/4"-6"
DN200-250/8"-10"
DN300-700/12"-28"
0
5
10
15
20
25
30
35
40
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
Max operating pressure differential in control service,RE opening range 70 %-100 %
DN25 - 80/1" - 3"
DN100 - 200/4" - 8"
DN250/10"
DN300-700/12" - 28"
Temperature °F
Temperature °F
PSI
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
PSI
145
290
435
580122 212 302 392 482 572 662 752 842
TECHNICAL BULLETIN 12/16
N E L E S ® R - S E R I E S S E G M E N T V A L V E F l a n g e d R E a n d W a f e r R E 13 R 2 5 U S
Note:1) RE-valves are not recommended for applications with high on-off cycling rate. X- or L-series valves should be used in these cases.2) Please observe body rating for material in question when determining maximum allowable shut-off pressure differential.
Given maximum allowable throttling differential pressures are based on mechanical strength of the parts only. Nelprof analysis determines actual throttling dp capability, taking into account trim velocity, exit velocity, noise and cavitation.
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
Max operating pressure differential in control service,Q-RE opening range 0 %- 30 %
DN50-80/2"-3"
DN100-150/4"-6"
DN200-250/8"-10"
DN300-600/12"-24"
DN700/28"
0
10
20
30
40
50
60
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
Max operating pressure differential in control service,Q-RE opening range 30 % - 60 %
DN50&80/2"&3"
DN65/2,5"
DN100/4"
DN150/6"
DN200/8"DN250/10"
DN300-600/12"-24"DN700/28"
0
5
10
15
20
25
30
35
40
0 50 100 150 200 250 300 350 400 450
Pres
sure
Bar
Temperature °C
Max operating pressure differential in control service,Q-RE opening range 60 %-100 %
DN50-80/2"-3"
DN100/4"
DN150/6"
DN250/10"DN300-600/12"-24DN700/28"
Temperature °F
PSI
PSI
145
290
435
580122 212 302 392 482 572 662 752 842
Temperature °F
Temperature °F
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
PSI
145
290
435
580
725
870122 212 302 392 482 572 662 752 842
TECHNICAL BULLETIN 12/16 7
M E T S O
8 TECHNICAL BULLETIN 12/16
3 R 2 5 U S
SELECTION OF STANDARD ACTUATORS, QUADRA POWR
NOTES1) Maximum shut-off differential pressures for valves are given considering clean media. Safety margins between 10 % - 25 %
are typically recommended for cases where media is sticky or has tendency to built-up inside the valve.2) Selection is based on supply pressures as per relevant spring rate.3) Maximum shut-off differential pressures are given at ambient temperature, see curves on page 5.4) Maximum control differential pressures must not be based on values in this table only. Nelprof calculation, taking into account
noise level, inlet/outlet velocity, existence of cavitation, and actuator load factors must be observed when determing valves' dif-ferential pressure capability.
VALVE SIZE inch
ACTUATORSIZE
SPRINGRATE
psi
MAXSHUT-OFF DP
psiRE, Q-RE
MAXCONTROL DP
psiRE
MAXCONTROL DP
psiQ-RE
ND Intelligent ValveController
Recommmended model
NP PneumaticPositioner
Recommmended model
1 QP1C 60 727 509 507 ND 9103 NP 729
1 1/2 QP1C 60 727 509 507 ND 9103 NP 729
2 QP1C 60 727 509 507 ND 9103 NP 729
3 QP1C 60 320 320 319 ND 9103 NP 729
3 QP2B 41 509 509 507 ND 9103 NP 729
3 QP2C 60 727 509 507 ND 9103 NP 729
3 QP2D 80 727 509 507 ND 9103 NP 729
4 QP2C 60 509 364 261 ND 9103 NP 729
4 QP2D 80 582 364 261 ND 9103 NP 729
4 QP3B 41 582 364 261 ND 9103 NP 724
4 QP3C 60 582 364 261 ND 9103 NP 724
6 QP3B 41 320 320 261 ND 9103 NP 724
6 QP3C 60 407 364 261 ND 9103 NP 724
6 QP3D 80 582 364 261 ND 9103 NP 724
6 QP4B 41 582 364 261 ND 9106 NP 724
6 QP4C 60 582 364 261 ND 9106 NP 724
8 QP3C 60 233 233 217 ND 9103 NP 724
8 QP4B 41 407 364 217 ND 9106 NP 724
8 QP4C 60 509 364 217 ND 9106 NP 724
8 QP4D 80 509 364 217 ND 9106 NP 724
10 QP4C 60 291 291 145 ND 9106 NP 724
10 QP4D 80 407 291 145 ND 9106 NP 724
10 QP5B 41 465 291 145 ND 9106 NP 726
10 QP5C 60 509 291 145 ND 9106 NP 726
12 QP5B 41 218 145 116 ND 9106 NP 726
12 QP5C 60 364 145 116 ND 9106 NP 726
12 QP5D 80 436 145 116 ND 9106 NP 726
14 QP5C 60 174 145 116 ND 9106 NP 726
14 QP5D 80 247 145 116 ND 9106 NP 726
16 QP5C 60 116 116 116 ND 9106 NP 726
16 QP5D 80 189 145 116 ND 9106 NP 726
N E L E S ® R - S E R I E S S E G M E N T V A L V E F l a n g e d R E a n d W a f e r R E 13 R 2 5 U S