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STANDARD

STANDARD Tube Diffusers

STANDARD tube diffusers
B Overall length, installed (mm) C (mm) D (mm) E (mm) F (mm) Material
STANDARD 500 STANDARD 750 STANDARD 1000
STANDARD for 45 mm hole 534 784 1034 Ø 63 Ø 43 Ø 32 Ø ¾″ IT PP
STANDARD for 40 mm hole 534 784 1034 Ø 63 Ø 39 Ø 32 Ø ¾″ IT PP
Active membrane surface (m²) 0,08 0,12 0,16
A Active membrane length (mm) 500 750 1000
Weight/diffuser (kg) 1,0 1,2 1,4
Buoyancy in operation / diffuser (kg) 0,5 0,7 1,0

¾″ Connectors

¾″ connectors for mounting of STANDARD tube diffuser pair on lateral
Article designation Article number A (mm) B (mm) C (mm) D (mm) E (mm) Thread Material
VB 40 MS 4210401000 67 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 50 MS 4210501000 77 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 60 MS 4210601000 87 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 60 V2A 4210601002 92 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 304
VB 70 MS 4210701000 97 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 80 MS 42108012000 107 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 80 PP 4210801200 107 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP PP-GF
VB 80 V2A 4210802000 107 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 304
VB 80 V4A 4210804000 107 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 316
VB 100 MS 4211001000 127 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 100 PP 4211001200 127 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP PP-GF
VB 100 V2A 4211002000 127 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 304
VB 107 MS 421107100 134 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 120 MS 4211201002 147 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 120 V2A 4211201002 147 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 304
VB 125 MS 4201251000 - 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 125 V2A 4211252000 - 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP 304
VB 128 MS 4210901000 - 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 150 MS 4211501000 177 33,5 Ø 15 Ø 26,9 mm 25 ¾" BSP MS58
VB 163 MS 4211631000 - 33,5 - Ø 26,9 mm 25 ¾" BSP MS58
VB 170 MS 4211701000 197 33,5 - Ø 26,9 mm 25 ¾" BSP MS58
VB 200 MS 4212001000 - 33,5 - Ø 26,9 mm 25 ¾" BSP MS58
VB 200 V2A 4212002000 - 33,5 - Ø 26,9 mm 25 ¾" BSP 304

½″ Connectors (with Reducers)

½″ connectors, used with reducers (¾″ to ½″), for installation of STANDARD tube diffuser pair on lateral with small lateral holes
Article designation A (mm) B (mm) C (mm) D (mm) E (mm) Outer thread Material
167 mm connector 167 64 Ø 8 21,3 (½") 25 G ½" MS58
187 mm connector 187 74 Ø 8 21,3 (½") 25 G ½" MS58
Reducer ¾″ to ½″
Article designation A (mm) B1 (mm) B2 (mm) Material
Reducer ¾″ – ½″ 26 Ø ¾″ IT Ø ½″ OT MS58

Adapters

Adapter and gasket for installation of STANDARD tube diffusers on rectangular laterals
Article designation A (mm) B (mm) C (mm) D (mm) E (mm) Material
Spacer ring 60x45x10 Ø 60 Ø 45 3 10 Ø 50 PP
Spacer ring 60x45x20 Ø 60 Ø 45 3 20 Ø 50 PP
Spacer ring 60x45x30 Ø 60 Ø 45 3 30 Ø 50 PP
Spacer ring 60 x45x50 Ø 50 Ø 45 3 5 Ø 50 PP
Gasket for spacer ring Ø 55 Ø 50 2,5 - - EPDM

Adapters for Non-Standard Lateral Holes

Adapters for installation of STANDARD tube diffusers on rectangular laterals with non-standard hole diameter
Article designation Article number A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm) Material
Adapter 45/32 4224532000 Ø 60 7,5 Ø 45 3 Ø 32 10 3 Ø 50 PP
Adapter 45/33,8 4224533800 Ø 60 7,5 Ø 45 3 Ø 33,8 10 3 Ø 50 PP
Adapter 45/35 4224535000 Ø 60 7,5 Ø 45 3 Ø 35 10 3 Ø 50 PP
Adapter 45/37 4224537000 Ø 60 7,5 Ø 45 3 Ø 37 10 3 Ø 50 PP
Adapter 45/38 4224538000 Ø 60 7,5 Ø 45 3 Ø 38 10 3 Ø 50 PP
Adapter 45/40 4224540000 Ø 60 7,5 Ø 45 3 Ø 40 10 3 Ø 50 PP
Adapter 45/50 4224550000 Ø 60 7,5 Ø 45 3 Ø 50 10 3 Ø 50 PP
Gasket for adapter 4243000000 Ø 55 Ø 50 2,5 - - - - - EPDM

Adapters for 4″ Round Laterals

Adapter for 4″ round laterals
Article designation Article number A (mm) B (mm) C (mm) D (mm) Material
Adapter DW 100 4226045110 Ø 60 Ø 44 C1=29/C2=22 r 57,15 PP
Self-adhesive gasket 4245000000 Ø 63 Ø 40 3 - EPDM

Dummy Plugs

Dummy plugs for 40 mm and 45 mm lateral holes
Article designation Article number A (mm) B (mm) C (mm) D (mm) E Thread Material
Dummy plug for 45 mm hole 4230000033 Ø 60 Ø 44 36 46 ¾” PP-GF
Dummy plug for 40 mm hole 4230000333 Ø 60 Ø 39 36 46 ¾” PP-GF

¾″ CLIPIN® Adapter for STANDARD on Rectangular Laterals

¾″ CLIPIN® adapter for STANDARD on rectangular laterals
Article designation Article number A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) Material
¾″ CLIPIN® adapter for rectangular laterals 4111001300 26,44 (¾”) Ø 31 67,4 20,5 20,5 - PP-GF
Bolt as set: 4111004001 50 28 M8 8 Ø13 IMB 6 316
Locking latch as set: 4111004001 50 25 15 8 M8 - 316
Washer as set: 4111004001 Ø 28 Ø 9 3 - - - 316

¾″ CLIPIN® Adapter for STANDARD on Round Laterals

¾″ CLIPIN® adapters for STANDARD on round laterals
Article designation Article number A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) Material
¾″ CLIPIN® adapter for round laterals 4111001200 26,44 (¾”) Ø 31 67,4 20,5 - - PP-GF
Bolt as set: 4111004001 50 28 M8 8 Ø13 IMB 6 316
Locking latch as set: 4111004001 50 25 15 8 M8 - 316
Washer as set: 4111004001 Ø 28 Ø 9 3 - - - 316

MAGNUM®

MAGNUM® Tube Diffusers for Stainless Steel Rectangular Laterals

MAGNUM® Membranrohrbelüfter für Vierkantrohrverteiler
  1. Membrane
  2. Clamp
  3. Diffuser body
  4. CLIPIN® Bolt
  5. Washer + Gasket
  6. CLIPIN® locking latch
  7. Gasket
MAGNUM® tube diffusers for stainless steel rectangular laterals
Article designation A C Overall length D Materia
MAGNUM® 1000 MAGNUM® 1500 MAGNUM® 2000
MAGNUM® on 80 x 80 square 80 mm / 3.2" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® on 100 x 100 square 100 mm / 3.9" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® on 120 x 120 square 120 mm / 4.7" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® on 3" x 3" square 76,2 mm / 3" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® on 4" x 4" square 101,6 / 4" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
Active membrane surface - 0,16 m² / 1.7 ft² 0,24 m² / 2.6 ft² 0,32 m² / 3.4 ft²
Active membrane length 2xB - 2 x 500mm / 19.7" 2 x 750mm / 29.5" 2 x 1000mm / 39.4"
Weight /diffuser (kg) - 2,0 kg / 4.4 lb 2,3 kg / 5.1 lb 2,7 / 6.0 lb
Buoyancy in operation/ diffuser (kg) - 1,0 kg / 2.2 lb 1,4 kg / 3.1 lb 1,9 kg / 4.2 lb

MAGNUM® Tube Diffusers for Stainlesss Steel Round Laterals

MAGNUM® Membranrohrbelüfter für Edelstahl-Rundrohrverteiler
  1. Membrane
  2. Clamp
  3. Diffuser body
  4. CLIPIN® Bolt
  5. Washer + Gasket
  6. CLIPIN® locking latch
  7. Gasket
MAGNUM® tube diffusers for stainless steel round laterals
Article designation A (mm) C (mm) Overall length D (mm) Material
MAGNUM® 1000 MAGNUM® 1500 MAGNUM® 2000
MAGNUM® DN 80 Ø 88,9mm / 3.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® DN 100 Ø 114,3 mm / 4.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® DN 125 Ø 139,7 mm / 5.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® 3" (OD 3,5) Ø 88,9mm / 3.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® 4" (OD 4,5) Ø 114,3mm / 4.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
Active membrane surface - 0,16 m² / 1.7 ft² 0,24 m² / 2.6 ft² 0,32 m² / 3.4 ft²
Active membrane length 2xB - 2 x 500mm / 19.7" 2 x 750mm / 29.5" 2 x 1000mm / 39.4"
Weight/diffuser (kg) - 2,0 kg / 4.4 lb 2,3 kg / 5.1 lb 2,7 / 6.0 lb
Buoyancy in operation/ diffuser - 1,0 kg / 2.2 lb 1,4 kg / 3.1 lb 1,9 kg / 4.2 lb

MAGNUM® Tube Diffusers for Round Polypropylene Laterals

MAGNUM® Membranrohrbelüfter für PP-Rundrohrverteiler
  1. Membrane
  2. Clamp
  3. Diffuser body
  4. CLIPIN® Bolt + Gasket
  5. CLIPIN® locking latch
  6. Gasket
MAGNUM® tube diffuser for round polypropylene laterals
Article designation A C Overall length D Material
MAGNUM® 1000 MAGNUM® 1500 MAGNUM® 2000
MAGNUM® DN 80 Ø 88,9mm / 3.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
MAGNUM® DN 100 Ø 114,3 mm / 4.5" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
Active membrane surface (m²) - 0,16 m² / 1.7 ft² 0,24 m² / 2.6 ft² 0,32 m² / 3.4 ft²
Active membrane length (mm) 2xB - 2 x 500mm / 19.7" 2 x 750mm / 29.5" 2 x 1000mm / 39.4"
Weight / diffuser (kg) - 2,0 kg / 4.4 lb 2,3 kg / 5.1 lb 2,7 / 6.0 lb
Buoyancy in operation / diffuser (kg) - 1,0 kg / 2.2 lb 1,4 kg / 3.1 lb 1,9 kg / 4.2 lb

MAGNUM® T Tube Diffusers for Installation on 1″ Male Thread Mounts

MAGNUM® T tube diffuser for 1″ male thread mounts
Article designation A C Overall length D Material
MAGNUM® 1000 MAGNUM® 1500 MAGNUM® 2000
MAGNUM® T 1" IT 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
Active membrane surface (m²) - 0,16 m² / 1.7 ft² 0,24 m² / 2.6 ft² 0,32 m² / 3.4 ft²
Active membrane length 2xB - 2 x 500mm / 19.7" 2 x 750mm / 29.5" 2 x 1000mm / 39.4"
Weight/diffuser (kg) - 2,0 kg / 4.4 lb 2,3 kg / 5.1 lb 2,7 / 6.0 lb
Buoyancy in operation/ diffuser (kg) - 1,0 kg / 2.2 lb 1,4 kg / 3.1 lb 1,9 kg / 4.2 lb

MAGNUM® Tube Diffusers for AirRex® Laterals

MAGNUM® Membranrohrbelüfter für AirRex®
  1. Membrane
  2. Clamp
  3. Diffuser body
  4. Diffuser cap + Gasket
MAGNUM® tube diffuser for AirRex® lateral
Article designation A C Overall length D Material
MAGNUM® 1000 MAGNUM® 1500 MAGNUM® 2000
MAGNUM® for AirRex® R 57,15 mm / 2.17" 1200 mm / 47.2" 1700 mm / 67.0" 2200 mm / 86.6" Ø 63 mm / 2.5" PP
Active membrane surface (m²) - 0,16 m² / 1.7 ft² 0,24 m² / 2.6 ft² 0,32 m² / 3.4 ft²
Active membrane length (mm) 2xB - 2 x 500mm / 19.7" 2 x 750mm / 29.5" 2 x 1000mm / 39.4"
Weight/diffuser (kg) - 2,0 kg / 4.4 lb 2,3 kg / 5.1 lb 2,7 / 6.0 lb
Buoyoncy in operation / diffuser (kg) - 1,0 kg / 2.2 lb 1,4 kg / 3.1 lb 1,9 kg / 4.2 lb

Diffuser Securing Nut for MAGNUM® AirRex

Diffuser securing nut
Article designation Article number A B C D E F
Diffuser securing nut 4190000000 Ø 50 mm / 1.96" 46 mm / 1.80" Ø 36 mm / 1.42" Ø 28 mm / 1.10" Ø 28 mm / 1.10" (G ¾") 8 mm / 0.30"
Material PP–GF
Weight ~30g / 0.07 lb

Gaskets

Dichtungssatz für MAGNUM®
  1. Gasket (large)
  2. Gasket (small)
Gaskets
Article designation Article number A B C D E F G Material
Dichtungssatz 4130000000 Ø 50 mm / 1.96" 5 mm / 0.20" 7,5 mm / 0.30" 7 mm / 0.28" Ø 15 mm / 0.60" Ø 9 mm / 0.35" 7 mm / 0.28" TPE

Mounting Hardware For Dummy Plug (On Rectangular Laterals)

Blindstopfen für Vierkantrohr
  1. Washer
  2. Locking latch
  3. Bolt
  4. Dummy plug
  5. Gasket (large)
  6. Gasket (small)
Mounting hardware for dummy plug (on rectangular laterals)
Article designation Article number A B C D E F G H I J Material
Dummy plug 4120020000 22,69 mm / 0.90" 39,03 mm / 1.54" 15 mm / 0.60" Ø 58 mm / 2.3" Ø 50,8 / 2" Ø 32 mm / 1.26" 8,2 mm / 0.32" Ø 16 mm / 0.63" Ø 40,5 mm / 1.60" Ø 50,8 / 2" PP
Gasket 4130000000 Ø 50 mm / 1.96" 5 mm / 0.2" 7,5 mm / 0.30" 7 mm / 0.28" Ø 15 mm / 0.60" Ø 9 mm / 0.35" 7 mm / 0.28" - - - TPE
Bolt as set: 4111004001 Ø 50 mm / 1.96" Ø 28 mm / 1.10" M8 8 mm / 0.31" Ø13 mm / 0.51" IMB 6 - - - - 316
Locking latch as set: 4111004001 50 mm / 1.96" 25 mm / 0.98" 15 mm / 0.60" 8 mm / 0.31" M8 - - - - - 304
Washer as set: 4111004001 Ø 28 mm / 1.10" Ø 9 mm / 0.35" 3 mm / 0.12" - - - - - - - 316

Dummy Plug Set for Round Laterals

Blindstopfensatz für Rundrohr
  1. Washer
  2. Locking latch
  3. Bolt
  4. Dummy plug
  5. Gasket (large)
  6. Gasket (large)
Mounting hardware for dummy plug (on round laterals)
Article designation Article number A B C D E F G H I J K L Material
Dummy plug DN 80* 41120008000 22,85 mm / 0.90" 39,03 mm / 1.5" 15 mm / 0.59" Ø 58 mm / 2.3" Ø 50,8 mm / 2" Ø 32 mm / 1.3" 8,2 mm / 0.32" Ø 16 mm / 0.63" 40,5 mm / 1.6" Ø 50,8 mm / 2" 26,72 mm / 1.1" R40 PP
Gasket set 4130000000 Ø 50 mm / 1.96" 5 mm / 0.2" Ø 7,5 mm / 0.30" 7 mm / 0.28" Ø 15 mm / 0.59" Ø 9 mm / 0.35" 7 mm / 0.28" - - - - - TPE
Bolt as set: 4111004001 Ø 50 mm / 1.96" 28 mm / 1.1" M8 8 mm / 0.31" Ø 13 mm / 0.51" IMB6 - - - - - - 316
Locking latch as set: 4111004001 Ø 50 mm / 1.96" 25 mm / 0.98" 15 mm / 0.6" 8 mm / 0.31" M8 - - - - - - - 316
Washer as set: 4111004001 Ø 28 mm / 1.1" Ø 9 mm / 0.35" 3 mm / 0.12" - - - - - - - - - 316

CLIPIN® Mounting Hardware for Rectangular Laterals

CLIPIN® Befestigungssatz für Vierkantrohr
  1. Locking bolt
  2. Locking latch
  3. Washer
  4. Set
  5. Gasket (large)
  6. Gasket (small)
CLIPIN® mounting hardware set for rectangular laterals
Article designation Article number A B C D E F (mm) G (mm) Available materials
Locking bolt as set: 4111004000 M8 25 mm / 0.98" 100 mm /3.9" SW 13 - - - 316
Locking latch as set: 4111004000 50 mm / 1.96" 15 mm / 0.60" 8 mm / 0.31" M8 - - - 304
Washer as set: 4111004000 Ø 30 mm / 1.2" Ø 9 mm / 0.35" 3 mm / 0.12" - - - - 316
Gaskets 4130000000 Ø 50 mm / 1.96" 5 mm / 0.2" Ø 7,5 mm / 0.30" 7 mm / 0.28" Ø 15 mm / 0.59" Ø 9 mm / 0.35" 7 mm / 0.28" TPE

 CLIPIN® Mounting Hardware for Round Plastic Laterals

CLIPIN® Befestigungssatz für PP-Rundrohr
  1. Locking latch
  2. Washer
  3. Nut
  4. Set
  5. Gasket (large)
  6. Gasket (small)

Diffuser Mounting Connector for MAGNUM® AirRex

CLIPIN® mounting hardware set for round plastic laterals
Article designation A B C D E F G H I Available materials
Locking latch for DN 125 PP pipe 55 mm / 2.2" Ø 50 mm / 1.96" R 54 mm / 2.1" 8 mm / 0.30" 100 / 3.9" 40 mm / 1.6" M8 R 21,25 mm / 0.84" 20 mm / 0.79" HCR/304/316
Locking latch for DN 100 PP pipe 55 mm / 2.2" 49 mm /1.9" R 49 mm /1.9" 8 mm / 0.31" 100 / 3.9" 40 mm / 1.6" M8 R 21,25 mm / 0.84" 20 mm / 0.79" HCR/304/316
Locking latch for DN 80 PP pipe 55 mm / 2.2" 46 mm / 1.9" R 37 mm / 1.5" 8 mm / 0.31" 100 / 3.9" 40 mm / 1.6" M8 R 21,25 mm / 0.84" 20 mm / 0.79" HCR/304/316
M8 Nut 14,38 mm / 0.57" 6,5 mm / 0.26" M8 SW13 - - - - - HCR/304/316
Washer Ø 30 mm / 1.2" Ø 9 mm / 0.35" 3 mm / 0.12" - - - - - - HCR/304/316
Gasket Ø 50 mm / 2.0" 5 mm / 0.2" Ø 7,5 mm / 0.3" 7 mm / 0.28" Ø 15 mm / 0.59 Ø 9 mm / 0.35" 7 mm / 0.28" - - TPE
Diffuser mounting connector
Article designation Article number A B C D
Diffuser mounting connector 4199000000 102 mm / 4.0" Ø 35,5 mm / 1.4" G ¾"(BSP) G ¾"(BSP)
Material PP–GF
Weight ~50 g / 0.11 lb

Guard Cap

Endkappe
  1. Front view
  2. Rear view
  3. Side view
Guard cap
Article designation Article number A B C D E Material
Guard cap 4121000000 62 mm / 2.4" 31 mm / 1.2" 8 mm / 0.3" 10 mm / 0.4" 54 mm / 2.1" PP
Incl. mounting set: hex head screw 8x25, DIN 933, hex nut M8, DIN 934

Guard Rails

Sicherungsschiene
Guard rails
Article designation Article number Number of drill holes A B C D E F G H I J
Guard rail AirRex® 4121000001 6 17 mm / 0.7" 13 mm / 0.5" 200 mm / 7.9" 1200 mm / 47.2" Ø 13 mm / 0.5" 50 mm / 2" 300 mm / 11.8" 1600 mm / 63" 4 mm / 0.2" 30 mm / 1.2"
Guard rail AirRex+® 4121000002 8 17 mm / 0.7" 13 mm / 0.5" 200 mm / 7.9" 1205 mm / 47.4" Ø 13 mm / 0.5" 50 mm / 2" 215 mm / 8.5" 1605 mm / 63.2" 4 mm / 0.2" 30 mm / 1.2"
Guard rail custom 4121000003 * 17 mm / 0.7" 13 mm / 0.5" 200 mm / 7.9" * Ø 13 mm / 0.5" * * * 4 mm / 0.2" 30 mm / 1.2"
* depending on coordination / drawing

FLEXSIL®+ Tubular Membranes For OTT Diffuser Bodies with Retaining Ridge

Material specification

FLEXSIL+® is a polyorganosiloxane elastomer (silicone elastomer)

Colour blue
Shore hardness DIN 53505 A 53 (+8/- 3)
Maximum service temperature 140 °C / 284°F
Tear propagation resistance ISO 34-1 B > 35 N/mm

Dimensions

Dimensions / FLEXSIL® tubular membranes
Article designation Article number A Active membrane length B Overall length D Inner diameter Active membrane surface Material Colour
MB FLEXSIL+® 500 3180500000 500mm / 19.69" 560mm / 22.05" Ø 65,0mm - 66,0mm / 2.56" - 2.60" 0,08m² / 0.86ft² FLEXSIL+® blue
MB FLEXSIL+® 750 3180750000 750 mm / 29.53" 810 mm / 31.89 Ø 65,0mm - 66,0mm / 2.56" - 2.60" 0,12 m² / 1.3ft² FLEXSIL+® blue
MB FLEXSIL+® 1000 3181000000 1000 mm / 39.37" 1060 mm / 41.73" Ø 65,0mm - 66,0mm / 2.56" - 2.60" 0,16m² / 1.7ft² FLEXSIL+® blue

Slit pattern and slit size

The tubular membrane is perforated by a specially configured pattern of slits. It has no perforation at its 6 o’clock and 12 o’clock positions as well as on both ends. The slit size is dimensioned in accordance with the specific diffuser type and application at hand. Slit sizes are available in the following range: 

0,6mm / 0.024"

1,0mm 0.039"

1,2mm / 0.047"

1,4mm / 0.055"

2,0 mm / 0.079"

Pressure drop vs. throughput for OTT FLEXSIL+® membranes in new condition with different perforation grades

The diagram above is a plot of maximum diffuser pressure drop (i.e. the pressure drop used for blower dimensioning) as a function of air throughput for different perforation grades. The pressure drop data applies for diffusers and membranes in new condition. The actual pressure drops across new diffusers/membranes will be lower and can vary in a given delivery lot within a window of 6 mbar (0.09 psi).

For example, a 1.0 mm thick FLEXSIL+® membrane used at an air throughput of 10 m³/h will have:

a maximum pressure drop (i.e. the pressure drop used in blower dimensioning) of: 60 mbar (0.87 psi) and a pressure drop window within the lot of e.g.: 50 – 56 mbar (0.72 – 0.81 psi).

The pressure drop across a diffuser or membrane can change in subsequent operation. The amount of change depends on the purity of the inlet air, composition of the wastewater treated, process chemicals used and their concentrations as well as the aeration process technology and process conditions.

Due to these many variable factors, we cannot specify the increase in pressure drop to be expected in actual operation in your WWTP. We will however gladly advise you in accordance with our experience and develop, using your input parameters, operating conditions and maintenance plans which reduce pressure drop build-up.