Working Principle And Characteristics Of Full-bore Internal Thread Stainless Steel Ball Valve

To cut pump energy demand, select a piece ball valve with full-port bore, one-piece body, and threaded ends. Three checks confirm the choice: match bore to pipe ID, verify seat grade for working temperature, and confirm thread form before installation. Sizes run 1/4" to 2", pressure 1000 WOG, stainless steel body.

Why Full-Port Bore Cuts Flow Resistance

A reduced-port valve narrows the flow path at the ball. A 1 pc ball valve built to full port keeps bore equal to pipe ID. Flow profile stays uniform, and the valve adds little resistance.

• 📉 Lower pressure drop at the valve

• ⚡ Reduced pump head demand

• 🔄 Uniform flow profile

• 💰 Energy savings across multiple valves

Every pressure drop point adds to pump head. A full-port valve removes one point, so the pump works against less resistance.

One-Piece Body Construction

A one piece ball valve forms the body as a single casting or forging. No bolted body joint exists, so sealing points stay limited to the stem seal and two seat rings. Fewer seals mean fewer leak paths in service.

•  Threaded ends: NPT or BSP

•  Working pressure: 1000 WOG

•  Body material: 304 or 316 stainless steel

•  Seat material: PTFE standard, R-PTFE for higher temperature

•  Stem seal: PTFE with O-ring backup

Threaded ends suit small-bore lines that break down for maintenance. The valve removes without cutting pipe, which lowers downtime compared with a welded body.

Specifications and Pressure Ratings

The 1000 WOG rating covers water, oil, and gas service at ambient temperature. Pressure capacity drops as temperature rises, so the seat grade must match working temperature, not just the pressure figure.

Selection Checks Before Installation

1. Confirm bore matches pipe ID for full-port flow.

2. Verify seat grade suits working temperature.

3. Check thread form matches the port standard.

4. Confirm stem seal suits media and pressure.

5. Log body material against media corrosivity.

Common Faults and Corrective Actions

1. Stem leak in gas service: inspect stem seal and O-ring backup.

2. Seat leakage after thermal cycling: check seat grade against temperature.

3. Valve hard to turn: inspect seat compression and stem torque.

4. Thread leak at the joint: check thread form and sealant type.

5. Reduced flow at the valve: confirm full-port bore, not reduced.

A full-port piece ball valve removes one pressure drop point from the line. The 1 piece ball valve body removes the body joint and its leak path, so sealing points stay limited to the stem and seats. A one piece ball valve in 304 or 316 stainless steel suits process lines that need low flow resistance and fewer seals.

FEATURES:

• Blow-out Proof Stem
• Investment Casting Body
• Pressure Balance Hole in Ball Slot
• Reduce Port
• Various Thread Standard Available
• Locking Device Available

STANDARD:

• Design: ASME B16.34
• Wall Thickness : ASME B16.34,GB12224
• Pipe Thread : ANSI B 1.20.1,BS 21/2779
• DIN 259/2999,ISO 228-1
• Inspection&Testing : API 598