Stainless Steel Internal Thread Tee Ball Valves

Q: What does 1000 WOG mean on a ball valve?

1000 WOG means the valve is rated for 1000 psi (approximately 6.9 MPa) working pressure in Water, Oil and Gas service. It is a common industry rating for threaded stainless steel ball valves and indicates suitability for medium-high pressure pipelines handling water, oil, natural gas, LPG and compressed air.

Bolaisi delivers consistent quality and professional manufacturing for industrial flow control solutions.We supply Stainless Steel Internal Thread Tee Ball Valves built to API 608 and ASME standards, with forged stainless steel, 1000 WOG pressure rating, and reliable T/L port control.As an experienced manufacturer, we provide advanced threaded design, stable sealing, and customized options to support wholesale and project procurement worldwide.

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Product Description

Stainless Steel Internal Thread Tee Ball Valves provide reliable multi-port control for medium-high pressure pipelines. With high pressure rating, flexible flow path, threaded installation and corrosion-resistant stainless steel body, they effectively simplify piping layout and reduce installation & maintenance cost. As a multi-port ball valve, they are widely used in multiple industries and serve as a reliable solution for flow mixing, diverting and shut-off service.

1000 WOG High Pressure Rating

Rated to 1000 psi (≈6.9 MPa) for stable performance in water, oil and gas service.

T-Type & L-Type Multi-Port Control

T-port for mixing and diverting, L-port for switching and shut-off — one valve, multiple flow paths.

Female Threaded Installation

Standard NPT / BSPT / G threads — no welding required, tool-light and fast to install.

Forged Stainless Steel Body

304 / 316 / 316L one-piece or two-piece forged construction for strength and corrosion resistance.

ANSI Class VI Zero Leakage

PTFE / PPL seats with high-strength seals deliver reliable tight shut-off.

Flexible Actuation

Manual handle or gearbox; electric and pneumatic actuators with ISO 5211 mounting available.

Product Definition

Stainless Steel Internal Thread Tee Ball Valves is a multi-port flow control valve with 1000 WOG rating, suitable for Water-Oil-Gas service. It uses a T-type or L-type ball to realize flow mixing, diverting or switching by 90° rotation.

With one-piece or two-piece forged body and female threaded connection (NPT / BSPT / G), it allows tool-light installation without welding. Made of 304 / 316 / 316L stainless steel, it features high strength, corrosion resistance and long service life, widely used in petrochemical, HVAC, industrial, food and pharmaceutical systems. For flanged pipeline connections, see our stainless steel flanged ball valve.

Technical Parameters

Parameter Item	Parameter Value
Pressure Class	1000 WOG (1000 psi ≈ 6.9 MPa); Shell Test: 1500 psi (≈10.3 MPa); Seal Test: 1100 psi (≈7.6 MPa)
Nominal Diameter	1/4" ~ 2" (DN8 ~ DN50); Main sizes: 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1-1/2" (DN40)
Ball Type	T-Type (3-way mixing / diverting), L-Type (2-way diverting / shut-off)
Body Structure & Connection	One-piece / 2-piece forged stainless steel; Female threaded (NPT / BSPT / G), no welding required
Core Material	Body / Ball / Stem: 304 / 316 / 316L stainless steel; Seat: PTFE / PPL; Seals: high-strength rubber / flexible graphite
Applicable Temperature	PTFE seat: -20℃ ~ 120℃; PPL seat: -20℃ ~ 200℃
Applicable Media	Water, oil, natural gas, LPG, compressed air, chemical solvents, mild / strong corrosive media
Operation Method	Manual (butterfly / square handle / gearbox); Optional: Electric (On-Off / Modulating), Pneumatic (Single / Double Acting), ISO 5211 mounting

Meaning of 1000 WOG

1000 WOG is a universal pressure and media rating in the valve industry:

Water

Clean water, circulating water, tap water, slightly corrosive wastewater.

Oil

Mineral oil, hydraulic oil, lubricating oil, diesel, gasoline.

Gas

Natural gas, LPG, compressed air, inert gas.

1000

Rated Pressure

1000 psi working pressure (≈6.9 MPa) for medium-high pressure pipelines.

T-Type vs L-Type Ball: Core Differences

Comparison Item	T-Type Ball	L-Type Ball
Path Structure	T-shape 3-way, three ports interchangeable	L-shape 2-way, two ports connected
Core Function	Mixing, diverting, converging	Diverting, shut-off
Applicable Scenarios	Medium mixing, hydraulic distribution, multi-channel systems	Flow switching, circuit shut-off
Sealing Performance	ANSI Class VI	ANSI Class VI (more stable)
Usage Taboo	Avoid 3-way full opening under high pressure difference	Strictly no 3-way connection

Material Selection Guide

304 Stainless Steel

For general water, oil and gas; -20℃~120℃; most common applications.

316 Stainless Steel

For mildly corrosive media and chloride-containing fluids; better pitting resistance.

316L Stainless Steel

For strong corrosive, acid, alkali and chloride gas; excellent weldability and corrosion resistance.

Seat Matching

PTFE: good sealing, general temperature. PPL: high temperature up to 200℃.

Core Features

High Pressure Rated

1000 WOG (6.9 MPa), stable for high-pressure service.

Multi-Port Control

T/L type balls for mixing, diverting and switching.

Easy Installation

Standard NPT / BSPT / G threads, no welding required.

Premium Material

Forged stainless steel body with excellent corrosion resistance.

Reliable Sealing

ANSI Class VI zero leakage performance.

Flexible Operation

Manual / electric / pneumatic, ISO 5211 mounted.

Wide Temperature Range

-20℃ ~ 200℃ depending on seat material.

Installation & Maintenance

Installation Points

Confirm ball type (T/L), size, pressure, thread and material.
Clean threads and valve cavity before installation.
Use PTFE tape or thread sealant; tighten properly.
Reserve enough operation space for the handle.
Perform pressure test per 1000 WOG standard before use.

Maintenance Points

Regular inspection for leakage, corrosion and operation.
Clean and apply anti-corrosive protection for exterior parts.
Replace seats and seals if leakage occurs.
For electric / pneumatic actuators: check motor, air supply and limit switches.
Do not repair under pressure.

Typical Application Scenarios

Petrochemical: medium mixing, diverting and switching.
Industrial Manufacturing: hydraulic systems and cooling circuits.
Municipal HVAC: water mixing and distribution.
Food & Pharmaceutical: sanitary fluid control (316L).
Gas & Energy: natural gas / LPG line switching.

Why Choose Bolaisi Valves

Verified Quality System

Certified to GB/T 19001-2016 / ISO 9001:2015 international quality management system.

In-House Forging & Machining

Full process control from raw material to finished valve in our own Wenzhou factory.

100% Pressure Tested

Every tee ball valve is shell-tested and seal-tested to 1000 WOG requirements before delivery.

Engineering Support

Our technical team helps you choose T-type or L-type, seat material, thread standard and actuation.

Full Product Range

We also supply stainless steel internal thread ball valves, stainless steel electric ball valves and three-way flange ball valves.

OEM & ODM Available

Custom sizes, materials, thread types, actuation and nameplate branding supported.

Product Image

Stainless Steel Internal Thread Tee Ball Valves – 1000 WOG T-Type and L-Type Three-Way Ball Valve — Stainless Steel Internal Thread Tee Ball Valves — 1000 WOG, T-Type / L-Type, DN8–DN50, NPT / BSPT / G threaded.

Frequently Asked Questions

What is the difference between a T-type and an L-type three-way ball valve?

A T-type ball has a T-shaped passage that connects three ports interchangeably, making it ideal for mixing, diverting and converging flows. An L-type ball has an L-shaped passage that connects only two ports at a time, making it suitable for flow switching and shut-off. Choose T-type for mixing duty and L-type for diverting or isolating circuits.

What does 1000 WOG mean on a ball valve?

1000 WOG means the valve is rated for 1000 psi (≈6.9 MPa) working pressure in Water, Oil and Gas service. It is a common industry rating for threaded stainless steel ball valves and indicates suitability for medium-high pressure pipelines handling water, oil, natural gas, LPG and compressed air.

What sizes and thread standards are available?

We manufacture stainless steel internal thread tee ball valves from 1/4" to 2" (DN8 to DN50), with main sizes 1/2", 3/4", 1" and 1-1/2". Standard thread options include NPT, BSPT and G (BSPP). Custom thread standards are available on request.

Can these valves be automated with electric or pneumatic actuators?

Yes. All models feature an ISO 5211 mounting pad for direct actuator mounting. Electric (on-off or modulating) and pneumatic (single or double acting) actuators are available as options, making them suitable for automated process control systems. See our stainless steel electric ball valves for reference.

What is the maximum working temperature?

With PTFE seats the valve handles -20℃ to 120℃. With PPL seats the range extends to -20℃ to 200℃. For higher temperature requirements, please contact us for a suitable alternative design.

Do you offer OEM / ODM manufacturing?

Yes. As a direct factory, we support custom body materials, T/L ball configuration, thread standards, actuation, handle type and customer branding. Send your drawing or specification and we will quote accordingly.

Need a Fast Quote for Stainless Steel Tee Ball Valves?

Send us your size, thread standard, T or L port type, medium and working pressure — our engineers will reply with a technical solution within 24 hours.

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