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Instrumentation Products - Monoflanges


 PDF AS-2001-EN

Monoflanges

Schneider Monoflanges & VariAS-Blocks The Schneider Monoflanges and VariAS-Blocks are designed to overcome the problems of traditional assemblies on primary isolation duties. By combining piping and instrument valves in a single assembly, they provide weight and space savings, along with other benefits including reduced potential leak points and safer hook-up. This more compact and efficient arrangements reduces not only pipework vibration and associated stress but also installation and maintenance costs.
 Monoflange Series

Schneider Monoflanges are designed to replace conventional mutiple-valve installations currently in use for interface with pressure measuring systems. By combining customer specified valves into a single manifold, the number of leak paths is considerably reduced and the mass of the system is lowered reducing the stresses from loading and vibration. The Schneider Monoflange Series are available as Process Monoflanges and Intrument Monoflanges.
 Process Monoflanges

Designed to replace the traditional primary isolation valve, the Primary Isolation Valve (OS&Y bolted bonnet) incorporates a primary isolate piping valve combined with instrument double block & bleed functions.

  • Block
    1st Isolate: OS&Y
 Block
       
  • Block & Bleed
    1st Isolate: OS&Y
    Vent: Needle
 Block & Bleed
       
  • Double Block & Bleed
    1st Isolate: OS&Y
    2nd Isolate: Needle
    Vent: Needle
 Double Block & Bleed
       
 Instrument Monoflanges

Instrument Monoflanges work in conjunction with a pre-installed primary valve to provide a compact instrument block and bleed valve or are used when primary valves with an OS&Y bolted bonnet are not required.

  • Block
    1st Isolate: Needle
 Block
       
  • Block & Bleed
    1st Isolate: Needle
    Vent: Needle
 Block & Bleed
       
  • Double Block & Bleed
    1st Isolate: Needle
    2nd Isolate: Needle
    Vent: Needle
 Double Block & Bleed
       
 Monoflange - Standard Features
  • ASME B16.5 flange connections
    Flange size 1/2" to 2" (DN15 to DN50)
    Flange Class 150 to 2.500
  • Outlet connection 1/2 NPT female
  • Vent connection 1/4 NPT female
  • Seat metal / metal
  • Packing PTFE or graphite
  • Material of construction 316 / 316L
  • Vent valve with anti-tamper head unit incl. t-handle
  • Fire safe tested to ISO 10497 / API 607
  • Pressure tested to EN 12266
Screwed Bonnet QS&Y Bolted Bonnet
 Monoflange - Optional Features
  • API flange connections (up to 10.000 psi)
  • EN flange connections
  • DIN flange connections
  • FPM O-ring stem sealing
  • Materials of construction including A350 LF2, A105, Duplex, Super Duplex, Monel®,
    Hastelloy®, 6Mo alloys, Incoloy®
  • Fire safe tested to ISO 10497 / API 607
  • Anti-tamper head units (also lockable) for all vaves
  • Pressure tested to API 598
  • NACE MR0175 / ISO 15156 compliant materials
  • Pressure test certificates and material certification
  • Bellows sealed valve head units
  • Swivel gauge connections including 1/2 NPT female and G 1/2 female (1/2HH BSPP) threads
    see also Accessories
  • According to TA-Luft
  • Oxygen Service

If you don't find your option please contact us.
 Monoflange Pressure-Temperature Rating Needle Valve

Note:
Starting from 1 1/2" Class 900/1500 the valve head units are 45° angled for convenient operation:

 
 Monoflange Options
  • Flange x Flange Types
    • Dual Flange Style
    • Wafer Style
    • RD1 Style - For Direct Mounting of Transmitters acc. to EN 61518
    • RFB Style - For Direct Mounting of Rosemount Transmitter Model 3051
Dual Flange Style Wafer Style (option S)
RD1 Style
For Direct Mounting of Transmitters acc. to EN 61518		 RFB Style
For Direct Mounting of Rosemount Transmitter Model 3051
  • Dual Outlet Types for Direct Mounting to Horizontal or Vertical Pipe Lines
    • Vertical Pipe Line, Radial Outlet
    • Horizontal Pipe Line, Axial Outlet
    • Vertical Pipe Line, Raidal Outlet
    • Horizontal Pipe Line, Axial Outlet
Vertical Pipe Line, Radial Outlet Horizontal Pipe Line, Axial Outlet
Process Monoflange (e. g. Block & Bleed)
Swivel Gauge Adaptor installed on outlet
Vertical Pipe Line, Radial Outlet Horizontal Pipe Line, Axial Outlet
Instrument Monoflange (SM Type) with an integral Swivel Gauge Adaptor.
For more information see Modular Mounting System Catalogue AS-3601.
 Monoflange Assemblies

There are various possibilities in using the Monoflange concept not only for Pressure Applications. The following pictures are showing two examples for Differential Pressure Assemblies – Flow and Level.

Monoflange Assembly
  • Flow Assembly
    consisting of:
    • 1 x Process Monoflange V-Type, e.g. DB&B with an
      integrated 3 valve manifold (High Pressure Side + )
    • 1 x Process Monoflange,
      e.g. DB&B (Low Pressure Side - )
Monoflange Assembly
  • Level Assembly
    (Wet/dry leg installation)
    consisting of:
    • 1 x Process Monoflange V-Type, e.g. DB&B with an
      integrated 4 valve manifold (High Pressure Side + )
    • 1 x Process Monoflange,
      e.g. DB&B (Low Pressure Side - )
 Process Monoflange Weights and Dimensions - Flange x Thread
Process Monoflange Weights and Dimensions
Flange Size (in) Flange Class ØD (mm) Flange Face Approx. Weight (kg)
RF
x (mm)		 RTJ
x (mm)
 
1/2 150 98.6 36.6 -- 2,5
1/2 300 98.6 36.6 40.6 2,6
1/2 600 98.6 41.4 40.6 2,6
1/2 900/1500 120.7 41.4 41.4 3,5
1/2 2500 133.4 41.4 41.4 4,3
3/4 150 98.6 36.6 -- 2,6
3/4 300 117.3 36.6 41.4 3,5
3/4 600 117.3 41.4 41.4 3,5
3/4 900/1500 130.0 41.4 41.4 4,1
3/4 2500 139.7 41.4 41.4 4,8
1 150 108.0 36.6 41.4 3,0
1 300 124.0 36.6 41.4 3,9
1 600 124.0 41.4 41.4 3,9
1 900/1500 149.3 41.4 41.4 5,1
1 2500 158.8 42.4 42.4 6,1
1 1/2 150 127.0 36.6 41.4 4,1
1 1/2 300 155.4 36.6 41.4 6,0
1 1/2 600 155.4 41.4 41.4 6,0
1 1/2 900/1500 177.8 41.4 41.4 7,4
1 1/2 2500 203.2 51.4 52.9 11,4
2 150 152.4 36.6 41.4 5,4
2 300 165.1 36.6 42.9 6,4
2 600 165.1 41.4 42.9 6,9
2 900/1500 215.9 45.4 46.9 12,0
2 2500 235.0 58.4 59.9 17,5
 Instrument Monoflange Weights and Dimensions - Flange x Thread
Instrument Monoflange Weights and Dimensions
Flange Size (in) Flange Class ØD (mm) Flange Face Approx. Weight (kg)
RF
x (mm)		 RTJ
x (mm)
 
1/2 150 88.9 33.6 -- 1,6
1/2 300 95.3 33.6 37.6 2,0
1/2 600 95.3 38.4 37.6 2,0
1/2 900/1500 120.7 38.4 38.4 2,9
1/2 2500 133.4 38.4 38.4 3,7
3/4 150 98.6 33.6 -- 2,0
3/4 300 117.3 33.6 38.4 2,9
3/4 600 117.3 38.4 38.4 2,9
3/4 900/1500 130.0 38.4 38.4 3,5
3/4 2500 139.7 39.4 39.4 4,2
1 150 108.0 33.6 38.4 2,6
1 300 124.0 33.6 38.4 3,3
1 600 124.0 38.4 38.4 3,3
1 900/1500 149.3 38.4 38.4 6,8
1 2500 158.8 42.4 42.4 5,7
1 1/2 150 127.0 33.6 38.4 3,8
1 1/2 300 155.4 33.6 38.4 5,3
1 1/2 600 155.4 38.4 38.4 5,3
1 1/2 900/1500 177.8 39.4 39.4 6,8
1 1/2 2500 203.2 51.4 52.9 11,5
2 150 152.4 33.6 38.4 5,1
2 300 165.1 33.6 39.9 5,7
2 600 165.1 38.4 39.9 6,2
2 900/1500 215.9 45.4 46.9 11,6
2 2500 235.0 58.4 59.9 17,0
 Monoflange | Ordering Information
      1 2 3 4 5 6 7 8 9 10 11 12 13 14
1
      M G B - N F E L N 4 - S C N
 
  Monoflange Type                                
                                   
  Outlet connection Type                            
  Axial | Radial | Dual |                            
  MA | MB | MC | Block (OS&Y)                        
  MD | ME | MF | Block & Bleed (OS&Y / Needle)                        
  MG | MH | MJ | Double Block & Bleed (OS&Y / Needle / Needle)                        
  MK | ML | MM | Block ( Needle)                        
  MN | MP | MQ | Block & Bleed( Needle / Needle)                        
  MR | MS | MT | Double Block & Bleed( Needle / Needle / Neddle)                        
  Packing                            
                               
A | PTFE                            
B | Graphite                            
                                 
  Process Connection (ASME Flange)                            
                               
NA | 1/2" RF                        
NC | 1/2" RTJ                        
ND | 3/4" RF                        
NF | 3/4" RTJ                        
NG | 1" RF                        
NJ | 1" RTJ                        
NK | 1 1/2" RF                        
NM | 1 1/2" RTJ                        
NN | 2" RF                        
NQ | 2" RTJ                        
NR | 2 1/2" RF                        
NT | 2 1/2" RTJ                        
NU | 3" RF                        
NW | 3" RTJ                        
    DIN, EN, API Flanges on request!                        
  ASME Flange Class                            
                               
A | 150                            
B | 300                            
C | 600                            
E | 900/1500                            
F | 2500                            
  Outlet Conncection                            
                               
  | Thread Connection                        
LGQ | G1/2 Female (Integral Swivel Gauge Adaptor)                        
LN4 | 1/2 NPT Female                        
JN4 | 1/2 NPT Male                        
  | Transmitter Interface                        
RD1 | EN 61518 type A (only for axial outlet available)                        
RFB | For Rosemount 3051 (only for acial outlet available)                        
    For ASME Flange Connections on Outlet use designator of process connection.
"Dual Flange Style" is standard - "Wafer Style" see options.		                        
                             
  Body Material                            
                               
C | A105                            
F | Duplex UNS 31803                            
H | Alloy C-276                            
L | A350 LF2                            
M | Alloy 400                            
S | 316/316L                            
V | Alloy 625                            
  Vent Connection                            
                               
A | Without (Block Type Only)                        
C | 1/4 NPT Female                        
D | 1/4 NPT Female plugged                        
E | 1/2 NPT Female                        
F | 1/2 NPT Female plugged                        
  Options                            
                               
B | Oxygen Service                            
N | NACE MR0175/ISO 15156                            
S | Wafer Style (Flange x Flange)                            
T | All Valve Haed Units Anti-Tamper                        
W | All Valve Head Units Anti-Tamper lockable incl. padlock                        
Y | Vent Valve Head Units Anti-Tamper loackable incl. padlock                        
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