Industrial, Instrumentation & Hydraulic Valves Manufacturer

Z-Lok is a reputable Industrial, Instrumentation & Hydraulic Valves Manufacturer, offering precision-engineered valves for tough industrial situations. The life service, leak-tight performance, high pressure, and reliable flow control are all features designed into our valves for hydraulic, instrumentation and process systems.

Z-Lok is a reputable Ball Valves Manufacturer, providing top-notch ball valves that are precision-engineered for reliable flow control in industrial applications. Our ball valves ensure smooth operation, secure shut-off, excellent durability and resistance to demanding operating conditions. They can be used in hydraulic systems, instrumentation, process industries, oil & gas, chemical and general industries.

Stainless Steel 304 Ball Valves Specification

VALVE SIZE1/8″ TO 2″ / 6 MM TO 50 MM
THREADNPT, BSPP, BSPT, JIC, METRIC, UNF
CONNECTIONTHREADED, TUBE END, BUTT WELD, SOCKET WELD, WELD NIPPLE, FLANGED, SAE
FUNCTION2 WAY, 3 WAY, 4 WAY, 5 WAY, 
PRESSURE RATING1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15000 PSI, 20000 PSI
SEAL RING MATERIALPTFE, PVDF, DELRIN, PEEK, GRAPHITE
STANDARDISO , DIN , ANSI , API , ASME , AWWA , MSS , 
MEDIA HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL
MEDIA TEMPERATURE(-120* C TO 500*C )RANGE AS PER PRESSURE
BODY TYPEBAR STOCK
PACKING DETAILSBOX PACKING, WOODEN PALLET
APPLICATIONMATERIAL HANDLING EQUIPMENT, EARTH MOVING MACHINERIES , POWER GENERATING PLANT , STEEL MANUFACTURING PLANT , MINING INDUSTRIES , CHEMICAL PROCESSING MACHINES , PIPING LINE ,  PAINT INDUSTRIES , TRUCKS AND TRAILERS , AUTOMATION , AGRICULTURE MACHINES , AEROSPACE & DEFENCE EQUIPMENTS, 

SS 304 Ball Valves Mechanical Strength

Grade(% in 50mm) Elongation minimum0.2% Proof Yield Strength (MPa) minimumStrength of Tensile (MPa) minimumHardness
Brinell (HB) maxRockwell B (HR B) max
3044020551520192
304L4017048520192
304H4020551520192

Chemical Compatibility Of 304 SS Ball Valves

GradeMnCSiSCrPNMo
304minimum
maximum
–
2.0
–
0.08
–
0.75
–
0.030
18.0
20.0
–
0.045
–
0.10
–
304Lminimum
maximum
–
2.0
–
0.030
–
0.75
–
0.030
18.0
20.0
–
0.045
–
0.10
–
304Hminimum
maximum
–
2.0
0.04
0.10
–
0.75
–
0.030
18.0
20.0
-0.045––

Type 304 Ball Valve Equivalent

GradeBritishEuronormUNS No.SSJIS
European StandardsBritish StandardsNameDIN No.
30458E304S31X5CrNi18-101.4301S304002332SUS 304
304L–304S11X2CrNi19-111.4306S304032352SUS 304L
304H–304S51X6CrNi18-111.4948S30409––

Ball Valve 

Stainless Steel Ball Valve
Carbon Steel Ball Valve
Inconel Ball Valve
Monel Ball Valve
Hastelloy Ball Valve
Duplex Ball Valve
Super Duplex Ball Valve
SMO 254 Ball Valve
Titanium Ball Valve
PTFE Ball Valve
Copper Ball Valve
Brass Ball Valve
Bronze Ball Valve
Aluminum Bronze Ball Valve
High Pressure Ball Valve

Z-Lok Needle Valves are designed for precise flow control and reliable shut-off in fluid and gas systems. Manufactured for durability and accurate regulation, they are suitable for instrumentation, hydraulic, pneumatic, and industrial process applications.

Specification format of Hydraulic Needle Valves

VALVE SIZE1/8″ TO 2″ / 6 MM TO 50 MM
THREADNPT, BSPP, BSPT, JIC, METRIC, UNF
CONNECTIONTHREADED, TUBE END, BUTT WELD, SOCKET WELD, FLANGE END
FLOW PATTERNSTRAIGHT, ANGLE, CROSS PATTERNS
FUNCTION2 WAY, 3 WAY
BODY SHAPESQUARE, ROUND, HEXAGON
PRESSURE RATING1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI, 20000 PSI
ORIFICE SIZE2 MM TO 9.5 MM
MEDIA HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL
MEDIA TEMPERATURE(-120* C TO 500*C ) RANGE AS PER PRESSURE
BODY TYPEBAR STOCK, FORGED
HANDLE BAR T-HANDLE,KNOB HANDLE, WHEEL HANDLE
PACKING DETAILSBOX PACKING, WOODEN PALLET
MATERIALSS 304, SS 316, SS 316 TI, BRASS, COPPER, CS, DUPLEX, SUPER DUPLEX, INCONEL, MONEL, HASTELLOY, SMO 254,ALLOY 20, TITANIUM, 904L & ALL OTHER ALLOYS
APPLICATIONSUGAR, OIL & GAS, TEXTILE, POWER, WATER & WASTE WATER TREATEMENT, CHEMICAL PROCESS INDUSTRIES

Needle Valve

Stainless Steel Needle Valve
Carbon Steel Needle Valve
Inconel Needle Valve
Monel Needle Valve
Hastelloy Needle Valve
Duplex Needle Valve
Super Duplex Needle Valve
SMO 254 Needle Valve
Titanium Needle Valve
PTFE Needle Valve
Copper Needle Valve
Brass Needle Valve
Bronze Needle Valve
Aluminum Needle Valve
High Pressure Needle Valve

Female x Female Needle Valve Dimensions

Needle Valves
SizeAB±CD
1/8″19506545
1/4″22507050
3/8″25557555
1/2″30658555
3/4″36759565
1″408510065
1-1/4″549012080
1-1/2″6211013088
27212015095

Dimensions Schedule Male x Female Needle Valve

SizeAB±CD
1/8″19506545
1/4″22507050
3/8″25557555
1/2″30658555
3/4″36759565
1″408510065
1-1/4″549012080
1-1/2″6211013088
27212015095

Male x Male Needle Valve Dimensions chart

SizeAB±CD
1/8″19506545
1/4″22507050
3/8″25557555
1/2″30658555
3/4″36759565
1″408510065
1-1/4″549012080
1-1/2″6211013088
27212015095

Technical data of Needle Valve O.D.

SizeAB±CD
1/8″20506545
1/4″22507050
3/8″22557555
1/2″22658555
3/4″28759565
1″368510065
1-1/4″459012080
1-1/2″5211013088
26212015095

Female x Female Hex Needle Valve

SizeABC±3D
1/4″25559250
3/8″25609255
1/2″32759855
3/4″367511465

Z-Lok Manifold Valves are engineered for efficient control, isolation and distribution of fluids within instrumentation and industrial piping systems. They are designed to be reliable and durable to make connections easier and minimize the risk of leakage. Manifold Valves are used in various applications such as pressure measurement, hydraulic, process and instrumentation applications.

Specifications Chart Of Solenoid Valve Manifold

VALVE SIZE1/8″ TO 1″ 
THREADNPT, BSPP, BSPT
CONNECTIONTHREADED, FLANGE END
TYPER TYPE, T TYPE, H TYPE
FUNCTION2 WAY, 3 WAY, 5 WAY
BODY SHAPESQUARE, RECTANGLE
PRESSURE RATING1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI
ORIFICE SIZE2 MM TO 9.5 MM
MEDIA TEMPERATURE(-120* C TO 500*C ) RANGE AS PER PRESSURE
BODY TYPEBAR STOCK, FORGED
HANDLE BAR T-HANDLE
PACKING DETAILSBOX PACKING, WOODEN PALLET
MATERIALSS 316, SS 304, BRASS, SS 316 TI, CS, COPPER, SUPER DUPLEX, INCONEL, DUPLEX, HASTELLOY, MONEL, ALLOY 20, SMO 254, 904L, TITANIUM & ALL OTHER ALLOYS

Manifold Valves

DIRECT MOUNT MANIFOLD VALVE
DP TRANSMITTER MANIFOLD VALVE
INSTRUMENTATION MANIFOLD VALVE
PRESSURE TRANSMITTER MANIFOLD VALVE
HYDRAULIC VALVE MANIFOLD
BALL VALVE MANIFOLD
MANIFOLD VALVE WITH VENT PLUG
AIR MANIFOLD WITH VALVES

Manifold Valve Dimensions For Pressure Gauge

VALVE SIZE1/8″ TO 1″ 
THREADNPT, BSPP, BSPT
CONNECTIONTHREADED, FLANGE END
ORIFICE SIZE2 MM TO 9.5 MM

Ball Valve Manifold

Carbon Steel Manifold Valve
Copper Manifold Valve
Duplex Manifold Valve
Inconel Manifold Valve
Monel Manifold Valve
Hastelloy Manifold Valve
Alloy 20 Manifold Valve
PTFE Manifold Valve
High Pressure Manifold Valve

Standards of Manifold Check Valve


ASME B 16.25- Butt Weld End
ASME B 16.5- Flanged End
End Connection
BS EN 12266 – 1Testing
ASME B 16.34Pressure – Temperature Chart
BS 1868Design
ASME B 16.10Face To Face

Product Range For Manifold Forged Swing Check Valves

Valve TypeSize RangeClass RatingShell Material As Per Specification
Swing Check2″ to 36″150#
ASTM A351 Gr. CK3MCuN
ASTM A351 Gr. CF8C
ASTM A494 Gr. CW2M
ASTM A494 Gr. CW2M
ASTM A995 Gr. 4A
ASTM A494 Gr. CU5MCuC
ASTM A494 Gr. CY40
ASTM A351 Gr. CF3M
ASTM A352 Gr. LCB
ASTM A995 Gr. 5A
ASTM A217 Gr. WC6
ASTM A217 Gr. C12
ASTM A217 Gr. WC1
ASTM A494 Gr. CW6MC
ASTM A351 Gr. CN7M
ASTM A995 Gr. 1A
ASTM A217 Gr. C5
ASTM A216 Gr. WCB
ASTM A217 Gr. WC9
ASTM A351 Gr. F3
ASTM A995 Gr. 6A
ASTM A352 Gr. LCC
ASTM A352 Gr. LCA
ASTM A351 Gr. CD4Mcu
ASTM A351 Gr. F8M
ASTM A351 Gr. F8
Swing Check2″ to 36″300#
Swing Check2″ to 32″600#
Swing Check1/2″ to 2″800#
Swing Check – PRESSURE SEA L1/2″ to 20″900#
SWING CHECK – PRESSURE SEA L1/2″ to 20″1500#

Z-Lok Check Valves are designed to allow fluid to flow in one direction while preventing reverse flow in piping systems. The valves are made to ensure reliable and efficient operation, providing reliable sealing, low maintenance and great durability. They can be used in industrial, hydraulic, water and process piping systems where backflow is required to be prevented.

Specification of Hydraulic Check Valves

INSTRUMENTATION
VALVES SIZE
1/8″ TO 2″ / 6 MM TO 50 MM
CONNECTIONTHREADED, TUBE END, SOCKET WELD END, FLANGE END
THREADSNPT, BSPP, BSPT, METRIC, JIC, UNF
FLOW PATTERNSTRAIGHT
INSTRUMENTATION
VALVES BODY SHAPE
HEXAGON
PRESSURE RATING1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI, 20000 PSI
CRACKING PRESSURE0.5 BAR 
INSTRUMENTATION
VALVES ORIFICE SIZE
2 MM TO 40 MM
TYPEPOPPET TYPE, SPRING TYPE
MEDIA HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL
MEDIA TEMPERATURE(-50* C TO 350*C ) RANGE AS PER PRESSURE
BODY TYPEBAR STOCK, FORGED
INSTRUMENTATION
VALVES PACKING DETAILS
BOX PACKING, WOODEN PALLET
INSTRUMENTATION
VALVES MATERIAL
SS 304, SS 316, SS 316 TI, BRASS, COPPER, CS, DUPLEX, SUPER DUPLEX, INCONEL, MONEL, HASTELLOY, SMO 254, ALLOY 20, TITANIUM, 904L & ALL OTHER ALLOYS

Types of Check Valve 

HYDRAULIC CHECK VALVE
INLINE CHECK VALVE
NRV
NON RETURN VALVE
POPPET CHECK VALVE
SPRING CHECK VALVE
CHECK VALVE
SWAGELOK CHECK VALVE
INSTRUMENTATION CHECK VALVE

Nrv Valve Materials of Construction

PartInstrumentation Valves Standard MaterialOptional Material
1. BodyCI / MSCS, SS
2. DiscSGI / MSSS
3. ‘O’ ringNitrileEPDM, Neoprene, Viton

Pressure Ranges Available in Spring Check Valve

3000 PSI CHECK VALVE
6000 PSI CHECK VALVE
10000 PSI CHECK VALVE
15000 PSI CHECK VALVE
20000 PSI CHECK VALVE

Threaded Check Valve Dimension

Pipe
Size
Flow Coefficient
(Cv)
Max.0 PressureMin. Opening
Pressure, psi
Temperature
Range, °F
End—End
Lg.0
NPT Female × NPT Female
1/41.013,000 psi @ 70° F135° – 300°2 5/8″
3/83.093,000 psi @ 70° F135° – 300°2 5/8″
1/24.033,000 psi @ 70° F135° – 300°2 5/8″
3/493,000 psi @ 70° F135° – 300°3 5/16″
111.093,000 psi @ 70° F135° – 300°3 11/16″
NPT Male × NPT Male
1/41.013,000 psi @ 70° F135° – 300°3 13/16″
3/83.093,000 psi @ 70° F135° – 300°3 13/16″
1/24.033,000 psi @ 70° F135° – 300°3 13/16″
3/493,000 psi @ 70° F135° – 300°3 13/16″

Different types of Hydraulic Check Valve

  • shuttle valves
  • Poppet
  • Ball type
  • pilot operated
  • Wafer
  • Swing
  • Stop
  • Lift
  • Diaphragm check valves

Socket-Connect Check Valves Dimensions

Pipe
Size
Flow Coefficient
(Cv)
Pressure
Class
Max. PressureMax. Steam
Pressure
Min. Opening
Pressure, psi
Temperature
Range, °F
End—End
Lg.0
316 Stainless Steel Body
Socket Connect × Socket Connect
1/44.02200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°2 9/16″
3/85.05200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°2 9/16″
1/27200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°2 9/16″
3/416200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°2 15/16″
130200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°3 9/16″
1 1/449200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°4 1/8″
1 1/272200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°4 11/16″
2130200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°5 7/16″
2 1/2280200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°6 1/8″
3390200200 psi @ 70° F150 psi @ 350° F0.05-20° – 400°7 5/16″

Z-Lok Gate Valves are designed for reliable on/off flow control in industrial piping systems. Built for durability and secure shut-off, these valves provide efficient performance with minimal flow restriction when fully open. They are suitable for water, oil, gas, hydraulic, and various industrial process applications.

Specfication format of Knife Gate Valve

DESIGNOS&Y OR BAR STOCK
STANDARDAPI 602 & ASME B16.34
VALVES SIZE6 MM – 50 MM/ 1/8″ – 2″
THREADBSPP, NPT, JIC, BSPT, UNF, METRIC
CONNECTIONTUBE END, THREADED, SOCKET WELD, BUTT WELD, FLANGE END
FLOW PATTERNSTRAIGHT
BODY SHAPESQUARE, ROUND, HEXAGON
PRESSURE RATING1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15,000 PSI
CLASS#150, #300 , # 600, #900, #1500, # 2500
BODY TYPEBAR STOCK, FORGED
HANDLE WHEEL HANDLE
MATERIALSS 316, SS 304, SS 316 TI, COPPER, BRASS, DUPLEX, CS, INCONEL, SUPER DUPLEX, HASTELLOY, MONEL, ALLOY 20, SMO 254, 904L, TITANIUM & ALL OTHER ALLOYS

Gate Valve 

FORGED GATE VALVES
GATE VALVE WITH WHEEL HANDEL

HIGH PRESSURE GATE VALVES
HYDRAULIC GATE VALVES
INSTRUMENTATION GATE VALVES
OS & Y DESIGN GATE VALVES
SCREWED GATE VALVES
SOCKET WELD GATE VALVES
KNIFE GATE VALVES

os&y valve

SS 304 GATE VALVES
SS 316 GATE VALVE

A105 GATE VALVE
DUPLEX GATE VALVE
SUPER DUPLEX GATE VALVE
INCONEL 625 GATE VALVE
MONEL 400 GATE VALVE
HASTELLOY C276 GATE VALVE
ALLOY 20 GATE VALVE

 Sluice Gate Valve
 Sluice Gate Valve

Knife Gate Valve Size chart

SizeBADC
E
5020348335310468
8020351425375560
10020351495420622
12525457565470726
15025457625510789
20030570775610958
250406709156651109
3004067610557551280
3505087612408851436
4005088913009001495
45050889148510251676
500508114164011401891
600508114196013402195

Water Gate Valve Pressure Range

GATE VALVE 150 CLASS
GATE VALVE 600 CLASS

GATE VALVE 900 CLASS
GATE VALVE 1500 CLASS
GATE VALVE 2500 CLASS
3000 PSI GATE VALVE
6000 PSI GATE VALVE
10000 PSI GATE VALVE

Material Of Construction of Flanged Gate Valve

NameMaterial
DiscASTM A351 CF8M
BodyASTM A351 CF8M
BonnetASTM A351 CF8M
StemASTM A276 316
Snap RingASTM A276 316
Body GasketPTFE
PackingPTFE
WasherASTM A276 316
Packing GlandASTM A351 CF8M
Packing SleeveASTM A276 304
NutASTM A194-B8M
Hand WheelAluminium Alloy
Plain WasherASTM A276 304
Pneumatic Gate Valve Function

Gate Valve With Wheel Handel Technical Specification

Forged SteelAPI 602
Bolted BonnetAPI 600
End to End DimensionsASME B16.10
Pressure SealASME B16.34 / API 600
Butt Weld End DimensionsASME B16.25
Flanged End DimensionsASME B16.5, ASME B16.47-A & B
Valve Inspection & TestingAPI 598/ BS 6755 Part-I
Socket Weld End DimensionsASME B16.11
Non Destructive Test ( UT, RT, PT, MT)ASME B16.34
Visual InspectionMSS SP 55
Pressure – Temperature RatingASME B16.34
PRODUCT RANGEPRESSURE CLASSSIZE
Forged Steel800#-2500#6 NB – 50 NB
Bolted Bonnet150# – 600#15 NB – 900 NB
Pressure Seal900# -2500#50 NB – 600 NB

Dimensions of Hydraulic Gate Valve

Nominal PressureModel DNHand wheel 
diameter 
D-mm
Face to Face
L-mm
 Hole center distance 
c-mm
 Flange diameter 
d-mm
Crown diameter 
g-mm 
The flange thickness 
(containing water) T-mm
Hole number and aperture 
x-n
Boss height f-mm 
 PN16 50 138150 125165 99 19 4-Φ183
 65 173170 145185 118 19 4-Φ183
 80 173180 160200 132 19 8-Φ18 3
 100 200 190 180220 156 19 8-Φ18 3
 125 230 200 210250 184 19 8-Φ18 3
 150 230 210 240285 211 19 8-Φ23 3
 200 270 230 295340 26620 12-Φ23 3
 250 350 250350395 31922 12-Φ26 3
 300 350 270400445 37024.5 12-Φ26 4
Pressure Temperature rating of Screwed Gate Valve
BSPDN (mm)Media TempPressure RangeWeight (kg)
½”150 to 180°C0 to 13 BAR0.045
¾”200.055
1”250.07
1 ¼”321
1 ½”401.03
2”501.08