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Quarter-Turn Shut-Off

Instrumentation Ball Valves

Fast quarter-turn isolation and switching for instrument, sampling and hydraulic lines — bar stock, high pressure, tube end and 3 way ball valves in SS 304, SS 316 and SS 316L.

Stainless steel instrumentation ball valves
Up to 6000 PSIAt 100 °C*
Product Overview

Stainless Steel Instrumentation Ball Valves

An instrumentation ball valve uses a bored ball that rotates 90° against two seats to open or close the line. The quarter-turn action gives instant, visible on / off control with a full, straight flow path when open — ideal where operators need quick isolation rather than fine throttling.

Kalpataru ball valves are machined from SS 304, SS 316 or SS 316L bar stock with a precision-finished floating ball, PTFE, reinforced PTFE or PEEK seats and an adjustable PTFE stem packing. The handle lines up with the flow path, so valve position can be read at a glance.

  • Quarter-turn on / off
  • Low pressure drop flow path
  • Handle shows valve position
  • Blow-out proof stem
  • PTFE, RPTFE or PEEK seats
  • Screwed, tube end & 3 way
Request a Quote View Dimensions
Connections1/4" to 1"
EndsNPT, BSP, Tube OD & others
Max Working Pressure2000 / 6000 PSI at 100 °C
MaterialsSS 304 / 316 / 316L
01
Types

Ball Valve Types

BS
Bar stock ball valve

Bar Stock Ball Valve

Compact two-way valve machined from solid bar with NPT / BSP female or male ends. Rated up to 2000 PSI, it is the general-purpose isolation valve for instrument air, water, oil and process impulse lines.

  • End Conn.TOD / MPT / FPT
  • Tube OD1/4" to 1" OD (Fractional)
    6 mm to 25 mm OD (Metric)
  • Thread1/8" to 2" NPT (Taper); BSPP / BSPT / ISO / Metric on request
  • Test PressureUp to 2000 psi
  • PackingPTFE
  • MOCSS 316, 304 / Brass / Alloy 400, 600, C276 / CS / PTFE
  • Model No.MOC*-BV-IN*-OUT*
HP
High pressure ball valve

High Pressure Ball Valve

Heavier wall body, reinforced end connectors and optional PEEK packing for high pressure service. Used on hydraulic power units, chemical injection and high pressure gas lines where a bar stock valve is not enough.

  • End Conn.TOD / MPT / FPT
  • Tube OD1/8" to 1" OD (Fractional)
    3 mm to 25 mm OD (Metric)
  • Thread1/8" to 1" NPT (Taper); BSPP / BSPT / ISO / Metric on request
  • Test PressureUp to 10000 psi
  • PackingPTFE (optional PEEK)
  • MOCSS 316, 304 / Brass / Alloy 400, 600, C276 / CS / PTFE
  • Model No.MOC*-BVHP-IN*-OUT*
OD
Ball valve OD x OD with tube ends

Ball Valve OD × OD

Double ferrule compression tube ends on both sides, so the valve fits directly into a tubing run without extra adapters. Panel mounting version available.

  • End Conn.TOD / MPT / FPT
  • Tube OD1/8" to 1" OD (Fractional)
    3 mm to 25 mm OD (Metric)
  • Thread1/8" to 1" NPT (Taper); BSPP / BSPT / ISO / Metric on request
  • Test PressureUp to 6000 psi
  • PackingPTFE (optional PEEK)
  • MOCSS 316, 304 / Brass / Alloy 400, 600, C276 / CS / PTFE
  • Model No.MOC*-BVPM-IN*-OUT*
3W
Three way ball valve

3 Way Ball Valve

Three ports with an L-bored ball to divert flow from one inlet to either of two outlets, or select between two sources. Used for switching sample streams, changing over filters and selecting instrument signals.

  • End Conn.TOD / MPT / FPT
  • Tube OD1/8" to 1" OD (Fractional)
    3 mm to 25 mm OD (Metric)
  • Thread1/8" to 1" NPT (Taper); BSPP / BSPT / ISO / Metric on request
  • Test PressureUp to 6000 psi
  • PackingPTFE (optional PEEK)
  • MOCSS 316, 304 / Brass / Alloy 400, 600, C276 / CS / PTFE
  • Model No.MOC*-3BVPM-IN*-OUT1*-OUT2*
MBV
Multi way ball valve

Multi Way Ball Valve

Multi-port ball valve for selecting or switching between several lines from one compact body.

  • End Conn.TOD / FPT / MPT
  • Tube OD1/8" to 1" OD (Fractional)
    3 mm to 25 mm OD (Metric)
  • Thread1/8" to 1" NPT (Taper); BSPP / BSPT / ISO / Metric on request
  • Test PressureUp to 3000 psi
  • PackingPTFE
  • MOCSS 316, 304 / Brass / Alloy 400, 600, C276 / CS
  • Model No.MOC*-MBV-IN*-OUT*
02
Specifications

Technical Specifications

ProductInstrumentation Ball Valves — Bar Stock, High Pressure, OD × OD, 3 Way
Connection Size1/4", 3/8", 1/2", 3/4", 1"
End ConnectionsNPT (ASME B1.20.1), BSP / BSPP (ISO 228), BSPT (ISO 7), double ferrule tube end & others on request
Max Working Pressure2000 PSI (138 bar) bar stock; 6000 PSI (414 bar) high pressure — at 100 °C
Flow Pattern2 way straight-through; 3 way L-port diverting
OperationQuarter-turn lever handle with positive stops; lockable handle on request
SeatsPTFE, RPTFE (glass-filled PTFE), PEEK
Stem SealPTFE packing / gland, adjustable
Body MaterialsSS 304, SS 316, SS 316L & others on request
OptionsOxygen service cleaning, panel mounting nut, extended or oval handle, PMI, TPI
TestingHydrostatic shell test, seat leak test with nitrogen / air on request
CertificatesEN 10204 3.1 material certificate, test certificate, third party inspection on request
03
Materials

Material Grades

Body & Ball — Stainless Steel

SS 304 SS 316 SS 316L

Seat & Seal Materials

Seat PTFE Seat RPTFE Seat PEEK Packing PTFE
MaterialUNS No.Bar StockForgings
SS 304S30400ASTM A479 / A276ASTM A182 F304
SS 316S31600ASTM A479 / A276ASTM A182 F316
SS 316LS31603ASTM A479 / A276ASTM A182 F316L
04
Material Charts

Chemical & Mechanical Properties

GradeCMnSiPSCrNiMoOthers
SS 3040.082.001.000.0450.03018.0–20.08.0–10.5—N 0.10
SS 3160.082.001.000.0450.03016.0–18.010.0–14.02.0–3.0N 0.10
SS 316L0.0302.001.000.0450.03016.0–18.010.0–14.02.0–3.0N 0.10
Values in weight %. Single values are maximum unless stated. Limits as per the applicable ASTM bar stock specification.
GradeTensile Strength (MPa, min)Yield Strength 0.2% (MPa, min)Elongation (%, min)Hardness (max)
SS 30451520540201 HB
SS 31651520540217 HB
SS 316L48517040217 HB
Annealed condition, minimum values as per the applicable ASTM specification.
GradeDensity (g/cm³)Melting Range (°C)Key Characteristic
SS 3048.001400–1450General corrosion resistance, economical
SS 316 / 316L8.001375–1400Molybdenum for chloride & pitting resistance
05
Dimensions

Parts, Size & Seat Rating Tables

Parts & Materials of Construction

No.PartStandard MaterialNotes
1BodySS 316 (ASTM A479)SS 304 / 316L on request
2End ConnectorSS 316Threaded or tube end
3BallSS 316Precision ground & polished
4SeatsPTFERPTFE or PEEK optional
5StemSS 316Inserted from inside — blow-out proof
6Stem PackingPTFEAdjustable gland
7Gland / Packing NutSS 316Takes up packing wear
8HandleSS 304With vinyl grip, in line with flow when open
9Handle NutSS 304Secures handle to stem

Size vs Orifice vs Pressure

Size (NPT / BSP)Equivalent Tube ODOrifice — Bar Stock (mm)Orifice — High Pressure (mm)Pressure at 100 °C (PSI)
1/4"1/4" / 6 mm4.84.02000 / 6000
3/8"3/8" / 10 mm7.14.82000 / 6000
1/2"1/2" / 12 mm9.57.12000 / 6000
3/4"3/4" / 20 mm12.79.52000 / 6000
1"1" / 25 mm15.912.72000 / 6000

Seat Material Temperature Limits

Seat MaterialTemperature Range (°C)Pressure SuitabilityTypical Service
PTFE (virgin)-29 to 204Up to 2000 PSIAir, water, oils, most chemicals; lowest operating torque
RPTFE (glass-filled)-29 to 232Up to 2000 PSI, better at elevated temperatureHot water, steam condensate, frequent cycling
PEEK-29 to 260Up to 6000 PSIHigh pressure hydraulics, gas, chemical injection
Typical industry values for reference only. Pressure ratings apply at 100 °C and reduce at higher temperatures; seat temperature is the limiting factor. Orifice and dimensions are confirmed on the approved drawing for your order.
06
Applications

Where Our Ball Valves Are Used

Instrument Air Isolation

Sampling & Analyser Systems

Hydraulic Power Units

Chemical Injection Skids

Stream Switching & Diverting

Instrument Panels

Oil & Gas Utilities

Drain & Vent Lines

07
Why Kalpataru

Features & Advantages

Fast Quarter-Turn

A 90° turn fully opens or closes the valve, and the handle position shows the status from a distance.

Blow-out Proof Stem

The stem is loaded from inside the body with a shoulder, so line pressure cannot eject it even if the packing nut is loosened.

Seat Choice for the Duty

PTFE for low torque, RPTFE for heat and cycling, PEEK for high pressure — selected to suit your media and rating.

Full Traceability

Heat numbers are marked on bodies and recorded against mill certificates for every batch.

08
FAQ

Frequently Asked Questions

Can a ball valve be used to regulate flow?
Ball valves are designed for full open / full close service. Holding the ball part open wears the seats unevenly and can cause leakage. For throttling or fine flow control, use a needle valve instead.
What is the difference between the bar stock and high pressure ball valve?
The bar stock valve is a compact general-purpose valve rated up to 2000 PSI. The high pressure valve has a heavier wall body and PEEK seats, and is rated up to 6000 PSI at 100 °C for hydraulic and high pressure gas service.
How does the 3 way ball valve route flow?
The standard 3 way valve has an L-bored ball. Depending on handle position, the common port connects to one side outlet or the other, so it can divert one supply to two destinations or select between two sources.
Which seat material should I choose?
Virgin PTFE suits most liquids and gases up to about 204 °C. Glass-filled RPTFE handles higher temperature and frequent cycling better. PEEK is required for the 6000 PSI high pressure range and for temperatures up to around 260 °C.
09
Related

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Need Ball Valves for Your Project?

Tell us the type, end connections, pressure, seat material and quantity — we will quote with material certificates and delivery schedule.

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