Low Pressure Ball Valves

1 PC Ball Valve

1 PC Ball Valve. Full or reduced bore; tight bubble-tight shut-off with PTFE seats; ideal for on/off isolation, not throttling. Body in stainless steel SS316, rated to 1000 PSI. Material selected to suit the medium and pressure.

  • Bubble-tight shut-off (soft-seated types)
  • Corrosion-resistant materials
  • Ex-stock in common sizes
  • Actuation options on request

Specifications

Size Range1/4" – 4" (DN8 - DN100)
Body Design1 PC Body Design
Body MaterialStainless Steel SS316
OperationsReduced Bore, Quarter Turn
Working Pressure1000 PSI
ConnectionsBSPP / NPT
Seat / SealPTFE
Applicable MediumGeneral Oil, Gas & Water Applications
DesignBlow-out Proof Stem Design
Temperature Range-29°C to +150°C

Specifications are indicative and vary by size and manufacturer. Request the full datasheet for exact dimensions, materials and certification.

Typical applications

  • Water, seawater and utility distribution
  • Compressed air and low-pressure gas
  • Steam and condensate (rated types)
  • Marine, building services and process lines

Ordering & procurement

Ex-stock in Singapore, dispatched within 3 working days. Material / mill certificates (EN 10204 3.1) and export documentation available. Special sizes and materials sourced on request.

Request a quote

About 1 PC Ball Valve

1 PC ball valve is a reduced bore type ball valve that is used to start or stop the flow of a pipeline system. It is designed with a quarter turn handle to turn the ball in 90 degrees, either in open position or close position. The locking mechanism on the handle is to lock the handle when the valve is in open position or close position.

Reduced bore type ball valve is a valve where the bore size is smaller than the internal diameter of the pipework which it is installed on. It is available in stainless steel SS316 material and comes with PTFE seat. It is made in one body part, which leads to cost effectiveness and reduced leakage paths.

Material List

NOPART NAMEMATERIAL
1BodySS316, CF8M
2CapSS316
3SeatPTFE
4BallSS316
5Seal GasketPTFE
6Stem SealPTFE
7StemSS316
8Anti-Static DeviceSS304
9Stem PackingPTFE
10Packing GlandSS304
11Spring WasherSS301
12HandleSS304
13Stem NutSS304

Pressure-Temperature Rating

Pressure-Temperature Rating010203040506070-30-101030507090110130150Temperature (°C)Pressure (Bar)63 Bar150°C

Dimensional Drawing

1 PC Ball Valve dimensional drawing

Frequently Asked Questions

What is a one-piece (1 PC) ball valve?

A 1 PC ball valve has its body and end connections machined from a single piece of material. With fewer joints it is compact and highly leak-resistant, and it uses a quarter-turn (90°) ball to open or shut off flow.

What size range is available?

From 1/4" to 4" (DN8 – DN100), covering most small-bore isolation applications.

What is it made of?

The body is stainless steel SS316 for corrosion resistance, with PTFE seats and seals that give a bubble-tight shut-off.

What are the pressure and temperature ratings?

Rated to 1000 psi, with a working temperature of roughly -29°C to +150°C. Actual limits vary with size and seat material.

Is it full bore or reduced bore?

1 PC ball valves are reduced bore — the ball’s opening is smaller than the pipe’s inside diameter. This keeps them compact and economical but slightly restricts flow; choose a full-bore valve where minimal pressure drop is essential.

What end connections are available?

Threaded ends, typically BSPP or NPT. The valve and the pipe must use the same thread standard.

What is it best used for?

On/off isolation rather than throttling — suitable for oil, gas, water, compressed air, steam and general utility lines.

What documentation can be supplied?

Material / mill certificates (EN 10204 3.1) and export documentation are available on request.

Having a hard time finding the right parts?

We stock 15,000+ line items and can source specials nobody else can. Get a quotation within 2 hours.

Contact Us Now
Chat with us