Gate valve

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A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened

Flosteer Gate Valves are Rising Spindle ، Outside Screw & Yoke Type construction. Flosteer Gate valves are provided with smooth machined full bore and full opening of wedge eliminates additional pressure drop across the valve. Solid wedge ، Flexible wedge ، Split wedge ، and Parallel wedge designs offer maximum flexibility and option to clients for their suitable selection. Specially designed seat and gland packing materials are provided for superheated steam and high temperature Thermic fluid to trouble free service ، easy operation and longer life. Deep stuffing box is providing to assure tightness and maximum packing life. A separate properly machined and lapped back seat facilities are provided for replacement of Gland packing when valve is in stream under pressure.

Stellited trims are provided for all above 600# as a manufacturing standard of “FLOSTEER” valves and in lower rating also on request. Flosteer also offer extra long ، extended bonnet Gate valve for low temperature and cryogenic services. Antifriction thrust bearing is provided in yoke sleeve for higher sizes and classes.

FLOSTEER Gate valves are available under any Third party inspection including IBR (Indian Boiler Regulation).

Flosteer Gate Valves are also available with Gear ، Pneumatic Cylinder ، Electrical Actuator operated along with accessories like Solenoid ، Limit Switch ، Air Filter Regulator etc.

 

Gate Valve

Motorised Electrical Actuator Operated Gate Valve

Motorised Electrical Actuator Operated Gate Valve

Motorised Electrical Actuator Operated Gate Valve

Forged Steel Gate Valve

Stnadards :

Design Standard

API 600

Inspection & Testing Standard

API 598

Face To Face

As Per ANSI B 16.10

End Connection

Flanged End To ANSI B 16.5/BS 10 Table

 

Buttweld End To ANSI B 16.25

Size Range

1" To 24"

Pressure Rating

150# To 1500#

Nomenclature :

Body / Bonnet /

Gate (Wedge)

ASTM A 216 GR. WCB

ASTM A 217 GR. WC1/WC6/WC9/WC11

ASTM A 352 GR. LCB/LC3

ASTM A 351 GR. CF 8 /CF 8M/CF 3/CF 3M/CN 7M

IS 210 GR. FG 200/220/250/260

Seat ، Spindle ، Back Sheet Bush ، Gland Bush

AISI 410 (13% Cr.)/AISI 304/316/304L/316L/Alloy 20

Yoke Sleeve

C.S./Gun Metal/EN1

Gland Flange

ASTM A 216 GR. WCB/AISI 304/316/304L/316LS

Gland Packing

Grafoil/Graphited Asbestos/P.T.F.E. "V" Ring

Gasket

CAF/Grafoil/S.S. Spiral Wound With CAF/Grafoil/P.T.F.E.

Cross Pin & Nut

ASTM A 193 GR. B7/ A 194 GR. 2H/S.S. 304/316

Eye Bolt & Nut

IS 210 GR. FG 200/Ductile Iron/Cast Steel

Knife Edge Gate Valves

Flosteer Single Cast ، Rugged ، Heavy Duty body provides corrosion and abrasion resistance on the toughest liquid slurry and dry material handling application. Flosteer High Performance Uni-Directional / Bi-Directional Knife Edge Gate Valve provide better value and performance with many standard features not found in other ، commodity Knife Edge Gate Valve. Flosteer Knife Edge Gate Valves are available in different combination of Body ، Seat & Gate material.

Machine ground ultra thick gate and lapped integral / renewable seat are designed to handle dense mixture of stock ، and slurries.

A wide variety of hardened trim options are available on gate ، seat ring and deflection cone to perform in critical services. Flosteer Knife Edge Gate Valves are full port design for greater flow capacity and minimal pressure drop.

Body Type

Uni-Directional / Bi-Directional

Port

Full Round Port / “V” Notch / Square Port

Stem

Rising Stem / Non Rising Stem

Design Standard

MSS SP 81

Testing Standard

MSS SP 81

Size Range

2” To 32” (Higher Size on Request)

End Connection

Full Lugs ، Wafer Type ، Flangeless

Two Lugs Wafer Type ، Flangeless

Flange Type ، Wafer

Rating

150 psi up to 12” Size in C.S./S.S./Alloy Steel Construction and 75 psi up to 24” Size. Size Above 24” is not covered in MSS SP 81 Standard. Contact factory for higher size.

Drilling

As Per ANSI B 16.5 / BS / DIN / JIS / IS Standard ، Others on request

Operation

Manual Hand Wheel / Chain Wheel / Bevel Gear / Pneumatic Cylinder (Double / Single Acting) / Hydraulic Cylinder / Electric Actuator Operated.

Body :

Solid ، Rugged ، Heavy Duty ، One-Piece body casting including flanges. Flosteer Knife Edge Gate Valve design ensures minimum contact between the internal trim parts of valve ، Reduce wear & Tear.

Knife Gate :

  • Thicker knife gate to eliminate distortion under maximum differential pressure and to provide tight seating.
  • Precision machined and buffed gate provide long life of seating components and cuts even heavy or high-viscous fluids.
  • Precision finish gate sealing face is lapped to provide the best possible seat tightness.

Stem :

All valves are provided with a Corrosion Resistance ، Stainless Steel stem that assures easy ، smooth ، long life operation and dependable services. Knife Edge Gate Valve also can supply with stem cover on request for additional protection against dust while the valve is in the open condition.

Seat :

Integral / Renewable both types of seats are available with Flosteer Knife Edge Gate Valve. For highly abrasive applications we can supply a replaceable seat ring with a hard faced knife surface. Replaceable Seat extends the service life of the valve. Resilient seats can be easily replaced after removing valve from the line without complete dismantling.

Type : A - Metal to Metal Seat [Integral Seat]

High Temperature

High Density

Positive Shut Off

Type : B - Metal to Metal Seat [Renewable Seat]

High Temperature

High Density

Positive Shut Off

Abrasive Application

Easy Seat Replaceable Design without

Dismantling the Valve

Type : C - Elastomer Rubber Seat [Renewable Seat]

Temperature Limitation According to Seat

Material Selected.

Easy Seat Replaceable Design without

Dismantling the Valve

No Visible Leakage when Tested with Water (Bubble Tight)

Easy Seat Replaceable Design without

Dismantling the Valve

Type : D - P.T.F.E. Seat [Renewable Seat]

Temperature Limitation According to Seat

Material Selected.

Easy Seat Replaceable Design without

Dismantling the Valve

No Visible Leakage when Tested with Water (Bubble Tight)

Easy Seat Replaceable Design without

Dismantling the Valve

Type : E- Deflector Cone

Deflect the media away from any internal

exposed parts of the valves such as Knife Gate ، Seat etc. To prolong valve life in particularly demanding services ، deflection cones are available in different material to suit application

Gland Packing :

Smooth fully machined packing chamber ، cast gland follower ، multiple packing and pue leveling provide uniform compression of packing and it gives zero leakage from gland portion. Different varieties of packing materials to suit condition provide total sealing.

Locking Arrangement :

Flosteer Knife Edge Gate Valves are available in all size of hand wheel operated valves with locking arrangement.

Application :

Knife Edge Gate Valves are widely used in Pulp & Paper Mill ، Thermal Power Plant ، Sewage & Water peatment Plant ، Sugar Mill ، Chemicals Sledges ، Sticky Media and molasses for sledge and viscous media handling ، Carbon Black Plant ، Cement Plants ، Steel Plant ، Fly Ash ، Gases ، Powders etc.

Actuators (Operation) :
  • Manual Hand Wheel - MA1
  • Chain Wheel - MA2
  • Hand Levers - MA3
  • Bevel Gears - MA 4
  • Pneumatic Cylinder Double Acting - PN1
  • Pneumatic Cylinder Single Acting - PN2
  • Hydraulic Cylinder - HC1
  • Elecpical Motor - EM1
Pneumatic Cylinder Actuators :

ON-OFF Cylinder Actuators :

Flosteer Pneumatic Cylinder Actuators are available with Double Acting / Single Acting and Hydraulic Cylinder with Double Acting for on/off or positioning services. Flosteer manufacturing an extensive range of pneumatic and hydraulic cylinder actuator for the line valve automation requirements.

Depending on the application and service condition ، Flosteer can supply suip bore size diameter cylinder actuators. Flosteer cylinder actuators cylinder tube tested at 20 bar and suip for normal operation with Air Supply up to 8 bar.

Positioning Cylinder Actuators :

Flosteer Pneumatic Cylinder Actuators are also available with Pneumatic or Elecpo-Pneumatic Valve positioners for throttling conpol. Positioners are enclosed and mount on the bonnet.

Cylinder Nomenclature :

Cylinder Tube : Aluminium ، Inside Grind Honing ،

Outer French Blue Epoxy Painting

Piston : C.I. To IS 210 GR. FG 200

Piston Seal : Neoprene (Double Sealing)

Piston Rod : Steel with Hard Chrome Plated

(Others available on request)

Piston Rod Seals : Neoprene (Double Sealing)

Top & Bottom End Cap : C.I. To IS 210 GR. FG 200

With Black Epoxy Coated

* Tie Rod : Steel with Zinc Plated

* Spring : IS 4454 GR. II (Spring Steel)

[For Single Acting Act.]

* Air Connection Size : ¼” To 1” (Depends upon Cylinder Bore Size)

Accessories :

A variety of accessories are offered as standard ، including hand wheel extensions ، floor stand and a variety of cylinder actuator accessories for customizing the valve/actuator package to meet specific application requirements.

Positioners :

Flosteer Pneumatic Cylinder Actuators are also available with Pneumatic or Elecpo-Pneumatic Valve positioners for throttling conpol. Positioners are enclosed and mount on the bonnet.

Make - V-Automat / KOSO / Flucon

Type - Pneumatic / Elecpo-Pneumatic Type

I/P Converter :

I/P Converter are available with Pneumatic cylinder actuator operated Knife Edge Gate Valve to convert 4 to 20 mA input signal to 3 to 15 psig output.

Make - ABB / Flucon

Input Signal - 4 to 20 mA

Output Signal - 3 to 15 psig

End Connection - ¼” (NPT) Female

Air Filter Regulators :

Pneumatic Cylinder Actuator operated Knife Edge Gate Valves are also available with Air Filter Regulator to provide clean ، accurate air pressure to actuators and valve positioners.

Make - Placka / Shavo / Festo / Janatics

Size - ¼” to 1” (Depends upon SV Connection Size)

Solenoid Valve :

Flosteer Pneumatic Cylinder Operated Knife Edge Gate Valves are available with Solenoid Valve to supply air in to Cylinder Actuator.

Make - Rotex / Festo / ASCO / Janatics / Mercury / Schrader

Type - 5 x 2 Way for Double Acting / 3 x 2 Way for Single Acting

SV Body - Aluminium Anodized / S.S. / Brass

Coil Voltage - 220 V. / 110 V. / 24 V. AC / DC

Enclosure - Weather Proof / Explosion Proof / IIA / IIB / IIC

Size - ¼” To ½” (Depends upon Cylinder Connection Size)

Position Indicating Switch :

Position Indicating Switches (Limit Switch) are available for use cylinder actuators to know the on-off condition of valve in Conpol Room.

Design - Mechanical / Proximity

Make - BCH / Honeywell/P & F/Jayshree

Type - SPDT (01 NO + 01 NC)

DPDT (02 NO + 02 NC)

Enclosure - Weather Proof / Explosion Proof / IIA / IIB / IIC

Cable Enpy - ½”

Speed Conpol Valve :

Speed Conpol valves are available with Knife Edge Gate Valve for conpolling valve opening or closing speed with pneumatic cylinder actuators.

Make - Flosteer

Body - S.S. 304 / 316

Size - ¼” To ½” (NPT) Female

Pneumatic Tubing & Fitting :

To Connect With Cylinder & Solenoid / Positioner

Tubing - Copper / PU Coated With Copper / S.S. 304 / 316

Fittings - Brass / Brass With Chrome Plated / S.S. 304 / 316

Size - ¼” To ½” [Depends Upon Cylinder & Solenoid / Positioner Connection Size]

Companion Matching Flanges ، Gasket & Fasteners :

As per required materials and specification.

Elecpical Motor Actuator :

Flosteer Knife Edge Gate Valves can be furnished with Elecpical Actuator operated. Actuator Make - Rotork ، Auma ، ACT ، Anpieb etc.

When doing enquiry or ordering for elecpical actuator operated Knife Edge Gate Valves ، please specify the shut off pressure ، service condition - flow media ، max./min./normal temperature ، installation direction ، type of application - on/off or throttling (conpolling) ، speed of operation ، elecpical characteristics - voltage and phase ، actuator accessories and conpols as per specification requirements.

Valve Design & Testing : As Per MSS SP 81

Body Test :

Flosteer Knife Edge Gate Valves are tested at 150 psi up to 12” Size in C.S./S.S./Alloy Steel Conspuction and 75 psi up to 24” Size.

Seat Test :

MSS SP 81 has an allowable leakage rate (for metal to metal seated valves only) of 40 cc per inch of diameter ، per minute at 40 psi pressure. On a 12” size valves this would be equal 40 times 12، or 480 cc cc per minute at 40 psi.

  • Maximum allowable leakage of 0.6 GPM when tested with water at 40 psi applied in the normal flow direction.
  • For Soft Seated (Elastomers/P.T.F.E.) valves no visible leakage when tested with water at 40 psi.

Above 24” Size & Renewable seat design Knife Edge Gate Valves is not covered in MSS SP 81 Standard. Contact factory for higher size with application.

Ordering :

To order Flosteer Knife Edge Gate Valve ، simply complete the order code from information shown.

Valve Body Style :

Give Valve Body Style Code as follows :

MPU1 - Two Lugs ، Wafer Type ، Flangeless ، Cast Single Body ، Uni-Directional Design Knife Edge Gate Valve.

MPU2 - Full Lugs ، Wafer Type ، Flangeless ، Cast Single Body ، Uni-Directional Design Knife Edge Gate Valve.

MPU3 - Flange Type ، Cast Single Body ، Uni-Directional Design Knife Edge Gate Valve.

MPB1 - Two Lugs ، Wafer Type ، Flangeless ، Cast Single Body ، Bi-Directional Design Knife Edge Gate Valve.

MPB2 - Full Lugs ، Wafer Type ، Flangeless ، Cast Single Body ، Bi-Directional Design Knife Edge Gate Valve.

MPB3 - Flange Type ، Cast Single Body ، Bi-Directional Design Knife Edge Gate Valve.

Valve Size :

Give Valve Size Code as follows :

1 = 2” [50mm]

2 = 21/2” [65mm]

3 = 3” [80mm]

4 = 4” [100mm]

5 = 5” [125mm]

6 = 6” [150mm]

8 = 8” [200mm]

10 = 10” [250mm]

12 = 12” [300mm]

14 = 14” [350mm]

16 = 16” [400mm]

18 = 18” [450mm]

20 = 20” [500mm]

24 = 24” [600mm]

End Connection Style :

Give End Connection Code as follows :

EC - Two Lugs / Full Lugs ، Wafer Style with BSP Threaded hole in chest area and lugs.

ED - Two Lugs / Full Lugs ، Wafer Style with BSP Threaded hole in chest area and through hole in Lugs.

Body Material :

Give Body Material Code as follows :

B1 = IS 210 GR. FG 200 [Cast Iron]

B2 = Ductile Iron [S.G. Iron]

B3 = ASTM A 216 GR. WCB [Cast Carbon Steel]

B4 = ASTM A 351 GR. CF 8 [S.S. 304]

B5 = ASTM A 351 GR. CF 8M [S.S. 316]

B6 = ASTM A 351 GR. CF 3 [S.S. 304L]

B7 = ASTM A 351 GR. CF 3M [S.S. 316L]

B8 = Alloy 20

B9 = Hast Alloy C

BX = Any Other Special Body Material

Gate Material :

Give Gate Material Code as follows :

G1 = Stainless Steel 304

G2 = Stainless Steel 316

G3 = Stainless Steel 304L

G4 = Stainless Steel 316L

G5 = Alloy 20

G1 = Hast Alloy C

G6 = Nipiding to approx 600-1250 HV1 surface hardness

G7 = Stelliting overlay on Gate Edge with min. 1.0mm thickness and min. 40 HRC hardness

GX = Any Other Special Gate Material

Seat Material :

Give Seat Material Code as follows :

SM1 - Stainless Steel 304 [Metal To Metal]

SM2 - Stainless Steel 316 [Metal To Metal]

SM3 - Stainless Steel 304L [Metal To Metal]

SM4 - Stainless Steel 316L [Metal To Metal]

SE1 - EPDM Rubber [Renewable Type Soft Seat]

SE2 - Neoprene Rubber [Renewable Type Soft Seat]

SE3 - Viton Rubber [Renewable Type Soft Seat]

SP1 - P.T.F.E. [Renewable Type Soft Seat]

SS1 - Nipiding to approx 600-1250 HV1 surface hardness

SS2 - Stelliting overlay on seat with min. 1.0mm thickness and min. 40 HRC hardness

SS3 - Alloy 20

SS4 - Hast Alloy C

SSX - Any Other Special Seat Material

Gland Packing Material :

Give Packing Material Code as follows :

SGM - Standard General Service Packing Material

SGP - P.T.F.E. Impregnated Asbestos ، suip up to temperature maximum 2100 C.

HTM - High Temperature Graphite Asbestos Packing Material

PPT - Pure P.T.F.E. Packing Materials ، suip up to temperature maximum 2300 C.

FPM - Food Grade Packing Material

Port :

RP = Round Port

VP = “V” Notch Port

SP = Square Port

PX = Any Other Special

Stem :

RS = Rising Stem Type

NR = Non-Rising Stem Type

Actuator (Operation) :

Give Actuator Code As above mentioned

Ordering Example :

MPU2،6،ED ، B3،G2،SM2،SGM ، RP ، RS ، MA1

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