Segal Valves

- Pipeline Blind Specifications

Standard applications

-ASTM/ANSI standard

B16.6nbsp

B16.34

B31.1

Pipe flanges and flanged fittings

Valves-flanged, threaded and welding end

Power piping

-ASME standard

Section 2

Section 8

Section 9

Material part

Rules for construction of pressure vessels

Welding & brazing qualifications?

-API standard

598

Valve inspection and testing

-MSS standard

SP-6

SP-25

SP-55

Finish for contact faces of pipe flanges and connecting end flanges of valves and fittings

Marking system for valves ,fittings, flanges and unions

Quality standard for steel castings - valves, flanges, fittings, and piping components.

Final pressure testing (ANSI B16.34, API 598)

Class

150 lbs

300 lbs

600 lbs

900 lbs

1500 lbs

Seat & Shell

23 kg/cm (325 psi)

58 kg/cm (825 psi)

116 kg/cm (1650 psi)

172 kg/cm (2450 psi)

288 kg/cm(4100 psi)

Body materials

-Carbon steel principle

Body

Blind plate

Seat

Gearset

Screw shaft

Bolt

Nut

Plate (forging)

A015/A106

A240-304

A204-304

A182-F304

A479-304

A193-B7

A194-2H

Casting

A216-WCB/WCC

A240-304

A204-034

A182-F304

A479-304

A193-B7

A194-2H

-Stainless steel 304 principle

Body

Blind plate

Seat

Gearset

Screw shaft

Bolt

Nut

Plate (forging)

A240-304/A312-Tp304

A240-304

A182-F304

A479-304

A193-B8

A914-Gr8

Casting

A351-CF8

A240-304

A182-F304

A479-304

A193-B8

A194-Gr8

-Stainless steel 316 principle

Body

Blind plate

Seat

Gearset

Screw shaft

Bolt

Nut

Plate (forging)

A240-316L/A312-316L

A240-316L

A182-F316

A479-316

A193-B8

A194-Gr8

Casting

A216-CF3M

A240-316L

A182-F316

A479-316

A193-B8

A194-Gr8

Gasket

Material
NBR/HNBR (Nitrile Rubber)

General purpose

Resistance improved to ozone, sunlight and other atmospheric conditions (HNBR)

Non compatible

Posphate easter

Keton

Strong acids

Kerosene

Methanol Ethanol

blands

Service Temp (C)

-40 ~ +120

FPM/FKM (Viton / DIA-EL)

Good resistance to petroleum products

High temperature resistance

Amins

Ketones

-46 ~ +220

FEPV/FEPQ (Encapsulated O-Ring)

Good chemical inertness

Good heat resistance

High mechanical strength

-60 ~ +220

PFAV/PFAQ (Encapsulated O-Ring)

Good chemical inertness

Excellent heat resistance

High mechanical strength

-60 ~ +260

VMQ/FVMQ/PVMQ ( silicone Rubber )

Good chemical inertness (FVMQ)

Excellent low temperature inertness(PVMQ)

Good heat resistance

-110 ~ +250

PTFE/CTFE/Soft PTFE (Teflon, Kel-F, Expanded Teflon)

Excellent chemical inertness

Excellent low temperature inertness

Good heat resistance (Soft PTFE)

-240 ~ +300

PEEK

Excellent chemical inertness

Excellent heat resistance

High mechanical strength

~ +300

FFPM/FFKM (Kalrez, Perfluoro Elastomer)

Excellent chemical inertness

Excellent heat resistance

Good resilience

~ +316

Graphite (Pure, Engineered Graphite)

Excellent chemical resistance

Excellent temperature resistance

-240 ~ +800

Metal

Excellent ultra high pressure and temperature

-250 ~ + 1100

Segal Pipeline Blinds Photo Gallery