Products / Flange Insulation

Flange Insulation Flange Insulation

Flange Insulation Flange Insulation Flange Insulation


Flange Insulation


SBG-10 Seal
Insulation Sets
Insulation sets are used to limit corrosion in pipeline systems. Where dissimilar metals are present, the sets remove the possibility of the system acting as a galvanic cell and reduce the risk of
galvanic corrosion of the pipe work.

Insulation sets are also used to isolate cathodically protected piping systems where they prevent the
flow of electro-static charge.         
Each flange insulation set             
comprises one central flat or oval section gasket, one insulation sleeve per bolt and two insulating and two plated steel washers per
bolt. The sets are individually packed and clearly labelled with the flange rating, size, type
 and material combination.
This kind of material will be used mainly for unitlites and low pressure application  for class rating 150 and 300 only

This kind of material could be used for utility applications and for portable water application gasket should be approved by WRC ( NOVAPRESS 260).   

Componenet

 

1

2

3

4

5

6

Dielectric strength

V/mm

500

200

400

140

4000

1500

Compressive strength

N/mm2

270

270

 

 

 

 

Felxural Strength

N/mm2

155

155

 

 

 

 

Water Absorption

%

1.6

1

0.01

1

0.8

10.6

Maximum Tempreture

C

107

107

66

107

180

350

 

 

 

 

 

 

 

 

 

 Component Key:

 

Type E & F Central Gasket

Neoprene Faced phenolic

2

Insulating Washer, Type D Gasket

Reinforced phenolic

3

Insulating Sleeve

Polyethylene

4

Insulating Sleeve

Phenolic

5

Insulating Sleeve

Mylar

6

Type E & F Central Gasket

NOVAPRESS 260

 

 

 

 

 

 

 

 SBG-11 Seal

 With the consideration of economic and environmental protection, to prevent leakage of carrier pipelines has become more urgent than any time before. Flange is always the most common problem area; therefore, properly sealing the flanges has been the key point to solve pipeline leakage. Meanwhile, the flanges also need to be cathodically isolated to prevent stray currents from causing corrosion; therefore, flange insulation kit is used to prevent the process of galvanic corrosion by ensuring the interruption of electrical continuity between adjacent flanges and isolating each component without interfering with the proper tightening of the flange.

 

SBGO-11 seal gasket use G10 or G11 epoxy glass as retainer, and use two o-ring seal elements overlapping and offsetting into two unique seal grooves, thus, the seal elements can be sealed without outside pressure. This can eliminate potential leak in the laminate material, and increases the choice of seal elements. This kind of sealing gasket can use Viton, EPDM, neoprene or any type of rubber as seal elements.
SBGR-11 seal gaskets use also a rectangular sealing element enclosed into a unique groove to seal and isolate all types of flanges. This kind of gasket can provide theoretical near zero “m” and “y” factors resulting in effecting a positive seal without excessive bolt loads required with flat gaskets. Materials such as Teflon and viton also can be used as the sealing element, which increases the choice of material.
SBGP-11 seal gasket use G10 or G11 epoxy glass as retainer, and use two sophisticated Spring-Energized Teflon lip seal element overlapping and offsetting into two unique seal grooves, thus, the seal elements can be sealed without outside pressure. This can eliminate potential leak in the laminate material, the resilience of Teflon and increase the whole gasket’s sealing performance.
SBGC-11 Camprofile gasket use G10 or G11 epoxy glass as retainer, and use two layer of multi directional expanded PTFE layer as a sealing element can be sealed with low bolt load required with flat gasket, we can use expanded PTFE and Viton rubber which increase the choice of sealing material. Camprofile gasket can be reused by changing the sealing layer

 SBG-11 sealing gaskets are widely used for low and medium pressure, suitable for use in raised-face and flat-face flanges in ANSI class 150 and 300 service or equivalent to fit any flange diameter.

 

Before tightening after tightening

 

 Main Feature:
-    Superior sealing solution for low pressure.
-    Used for raised face I.B.C and full face flange.
-    Low compressive load and clamping.
-    Outstanding insulation properties for cathodic protection.
-    Gasket is sized to the flange bore to protect flange faces from media-induced corrosion and flow-induced erosion. Prevents turbulent flow at flanged connections.
-    Mitigates galvanic corrosion in dissimilar metal flanges.
-    Available with variety of elastomeric seals.

 

Flange Insulating Gasket Types
Type “E” gasket:
       Type “E” (Full Face) Gaskets have same outside 
        diameter of the flange and precise located bolt holes, 
        this feature will help to automatically center the    
        gasket and offer maximum protection against foreign   
        material “shorting-out” the flange.
Type “F” gasket:
Type “F” (Ring Type) Gaskets are made to fit within 
 the bolt hole circle of the flange. The O.D. of the 
 gasket extends out to the I.D. of the bolt hole circle
 for good protection against foreign material “shorting-
 out” the flange.
As well as manufacturing the gasket, we also provide the following isolating components to suite all flange type, pressure rating and temperature; -

-      Isolating bolt sleeve which could be maylar, phenolic, Nomax, G7, G10 and G11
-      Isolating washers could be phenolic, G3, G7, G10 and G11
-      Steel plated washers zinc plated or stainless steel

 

 

 SBG-12 Seal



With the consideration of economic and environmental protection, to prevent leakage of carrier pipelines has become more urgent than any time before. Flange is always the most common problem area; therefore, properly sealing the flanges has been the key point to solve pipeline leakage. Meanwhile, the flanges also need to be catholically isolated to prevent stray currents from causing corrosion and damage to pipelines.

Saudi Bisan can offer a series of materials and types of flange insulation gasket kits, to solve the sealing and insulating problems of flanges, and to control losses due to corrosion and leakage of pipelines. They are widely used to seal flanges and control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems.

 

Main feature of Insulation kit:
-    Extremely high reliability sealing and insulating solution for all critical services.
-    Seals and insulates at all pressures up to ANSI 2500# and API 15000#.
-    Unique stainless steel core bonded with high strength insulating laminate withstands severe service conditions including large bending moments, vibration, temperature and pressure cycling.
-    Designed to withstand corrosive environments, including high concentrations of CO2, H2S, produced water, etc.
-    Outstanding insulation properties for cathodic protection.
-    Pressure activated seals provides high confidence sealing and eliminates costly leaks.
-    Gasket is sized to the flange bore to protect flange faces from media-induced corrosion and flow-induced erosion. Prevents turbulent flow at flanged connections.
-    Mitigates galvanic corrosion in dissimilar metal flanges.
-    Available to match any flange specification (ANSI, API, BS, DIN, AS, others).

 

 Application of Flange Insulation kits:
-    Flange insulation in conjunction with cathodic protection, electrically "split up" long pipeline
      into distinctive cathodic protection systems.
-    Isolate a pipeline to ensure that cathodic protection or stray electricity currents do not cause
      increased corrosion or cause a hazard.
-    Isolate piping systems where dissimilar metals are present.
-    Eliminate static loading charge transfer in discharge or loading operations at oil storage
      terminals.
-    Wellhead isolation from inter-connected flow lines.
-    Eliminate fluid trap corrosion between ring-joint (RTJ) flanges where high concentrations o
      CO2, H2S and other aggressive hydrocarbon media are present.
-    Eliminate turbulence and flow-induced erosion between ring-joint (RTJ) flanges.
-    Protect against coating impingement on coated flange faces.
-    Seal between flanges subjected to vibration/cavitations (i.e., compressor stations).
 

 

Before Tightening                   
The flange faces come into contact with the                              
Sealing elements, which extend slightly           
Above the surface of the retainer. As the                       
Flange is tightened the sealing elements           
Are compressed into the machine groove, with
Developing an initial high unit pressure           
Against the flange face   
 
After Tightening
The flange faces come into firm contact with
the retainer, thus compacting the sealing
elements within grooves. At the same time,
the unique Zee12 seal spring energized seal
 provides elastic resulting in a flat gasket with
extremely high loading and self energizing
characteristics without adverse cold flow
problems.

 

 

  SBG-12-ID Seal

 
With the consideration of economic and environmental protection, to prevent leakage of carrier pipelines has become more urgent than any time before. Saudi Bisan offer a series of materials and types of flange insulation gasket kits, to solve the sealing and insulating problems of flanges, further challenge by the market requirements to provide solutions for electrical isolation in conductive environments as well as chemical resistance to aggressive media.

We provide solution with use of inner PTFE seal to protect the gasket from the aggressive chemical with double lock system created by us, this seal will isolate the steel core of the gasket from direct contact with media especially if it contains conduction particles forming a conductive bridge between flange and steel core.
 

 

 

Main feature of Insulation kit:
-    Extremely high reliability sealing and insulating solution for all aggressive chemical & critical services.
-    Formation of isolation bridge for better electrical resistance
-    The best for use in high chloride applications that could cause corrosion cracking with stainless steel core
-    Designed to withstand corrosive environments, including high concentrations of CO2, H2S, produced water, etc.
-    Avoid the need of exotic metal core because it breaks the metal to metal ion flow hence minimize the extra expanse.
-    Pressure activated seals provides high confidence sealing and eliminates costly leaks.
-    Gasket is sized to larger flange bore to reduce cavitation in the piping and reduce flange erosion.
-    Mitigates galvanic corrosion in dissimilar metal flanges.
-    Available with G11 retainer for up to 180 °C
-    Can seal mismatch RTJ Flange with Raised Face Flanges.

 

 


 

 

 

 

 

 

 

 

 

 

Sealing Gasket Retainer physical properties:

 

Unit

ASTM

G-3                  Hi-Temp Phenolic

  G-7        Silicone Glass

 G-10         Epoxy Glass

 G-11        Epoxy Glass

Di-electric Strength

Volts/Mill (Short Time)

D149

550

350-400

750

550

Compressive Strength

Psi

D695

50,000

40,000

65,000

50,000

Water absorption

%

D229

0.7

0.07

0.05

0.04

Tensile Strength

Psi

D638

42,000

25,000

50,000

43,000

Flexural Strength

Psi

D790

60,000

27,000

65,000

50,000

Shear Strength

Psi

D732

18,000

20,000

20,000

20,000

Insulation resistance

Meg Ohms

D257

46,000

2,500

200,000

200,000

Impact strength

Ft-Lb/Inch

D256

12

8

14

12

Operating Temperature

°C

 

-54 to +200

-54 to +232

-65 to +150

-65 to +180

 

 

Sealing element Temperature limit:

 

Nitrile

Viton

Teflon

Neoprene

EPDM

Operating Temp. °C

-29 to +121

-12 to +148

-54  to +232

-40 to +120

-54 to +149

 

 

SBV-12 seal insulating gasket utilizes a stainless-steel core boned with high strength insulating laminate G10 or G11, which not only maintains the high strength of stainless steel, but also reaches an excellent insulation. It consists of a spring-energized Teflon seal which provides high confidence sealing and eliminates costly leaks. And the seal groove is cut into the stainless-steel core, which can avoid leakage through the interval of two materials. 

SBV-12 seal insulating gasket is designed to seal and insulate for very critical services. It can seal and insulate raised face flanges, full face flanges, and ring joint flanges at all pressures up to ANSI 2500# and API 15000#. While 316 grade of stainless steel is most commonly required as a core material, we can also offer more exotic materials such as Super Duplex, Hastelloy and Inconel

 

 

Seal

SBG-12 Seal Sealing Gasket Retainer physical properties:

 

Unit

ASTM

  G-10         Epoxy Glass

G-11        Epoxy Glass

Di-electric Strength

Volts/Mill (Short Time)

D149

650

550

Compressive Strength

Psi

D695

65,000

50,000

Water absorption

%

D229

0.05

0.04

Tensile Strength

Psi

D638

50,000

43,000

Flexural Strength

Psi

D790

65,000

50,000

Shear Strength

Psi

D732

22,000

20,000

Insulation resistance

Meg Ohms

D257

200,000

200,000

Impact strength

Ft-Lb/Inch

D256

14

12

Operating Temperature

°C

 

-65 to +150

-65 to +180

 

Core Material

Stainless Steel 316L, 316, 304, 321, 310, 347

Monel 400.

Inconel 600, 625.

Nickel 200.

Titanium, Hastelloy/ Inconel 800, 825.

 

Gasket Retainer material

G10

G11

 

 

 

 

 

 

 

 

 

 

 

Washer material

G10

G11

G3

G7

PHENOLIC

 

Sleeve material

Mylar

Nomax

G10

G11

G7, Phenolic

 

 

 

 

 

 

   

Spring energized material

Stainless Steel 302

Stainless Steel 304

Stainless Steel 316

Elgiloy

 

Steel washer material

Steel plated.

Stainless Steel 316

 

 

 

 

 

 

 

 

 

 

 

 

 

Se

SBG-12-ID Seal Sealing Gasket Retainer physical properties:

 

Unit

ASTM

G-10         Epoxy Glass

G-11        Epoxy Glass

Di-electric Strength

Volts/Mill (Short Time)

D149

650

550

Compressive Strength

Psi

D695

65,000

50,000

Water absorption

%

D229

0.05

0.04

Tensile Strength

Psi

D638

50,000

43,000

Flexural Strength

Psi

D790

65,000

50,000

Shear Strength

Psi

D732

22,000

20,000

Insulation resistance

Meg Ohms

D257

200,000

200,000

Impact strength

Ft-Lb/Inch

D256

14

12

Operating Temperature

°C

 

-65 to +150

-65 to +180

 

 As well as manufacturing the gasket, we also provide the following isolating components to suite all flange type, pressure rating and temperature; -
-      Isolating bolt sleeve which could be maylar, phenolic, Nomax, G7, G10 and G11
-      Isolating washers could be phenolic, G3, G7, G10 and G11
-      Steel plated washers or stainless-steel washers