Editorial Technical Reference

Plug Valve

This page explains how Plug Valve is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A plug valve is a quarter-turn valve with a cylindrical or tapered plug that rotates to start, regulate, or stop flow in a pipeline.

Product Specifications

Technical details and manufacturing context for Plug Valve

Definition
Plug valves are quarter-turn devices used primarily for on-off and throttling service in industrial pipelines. They are common in oil and gas, chemical, water treatment, and pulp and paper applications where tight shutoff and low pressure drop are required. The valve consists of a body with a cylindrical or tapered bore and a plug with a passage (port) that aligns with the flow path when open. Rotating the plug 90 degrees aligns or misaligns the port with the inlet and outlet, allowing or blocking flow. The plug is held in place by a bonnet and can be lubricated or sleeved to reduce friction and ensure a tight seal. In a tapered plug, the taper provides a wedging action that enhances sealing under pressure.

Plug valves are specified by nominal size, pressure rating, end connections, body and plug materials, and port configuration (e.g., full bore, reduced bore, or multi-port). Grades are distinguished by body material (cast iron, carbon steel, stainless steel), sealing mechanism (metal-to-metal, soft-seated, or sleeved), and compliance with standards like API 599 or ASME B16.34. Higher grades offer better corrosion resistance, higher pressure/temperature ratings, and fire-safe designs.

Typical parameters include nominal sizes from DN15 to DN600 (ASME B16.10), pressure ratings from PN16 to PN40 (ASME B16.34), and temperature ranges from -29°C to 200°C depending on materials. Leakage rates can meet ISO 5208 Class VI for soft-seated designs. End connections may be flanged (ASME B16.5), threaded, or welded. Body materials include WCB, CF8M, and cast iron. Seat materials include PTFE, RPTFE, and PEEK. Port types include full bore, reduced bore, and multi-port. Fire-safe designs per API 607 are optional. Operation torque ranges from 10 to 500 N·m. Cavity pressure relief is self-relieving per API 599. Coatings may include epoxy or zinc-rich primer. Testing is performed per API 598.

Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The plug valve consists of a body with a cylindrical or tapered bore and a plug with a passage (port) that aligns with the flow path when open. Rotating the plug 90 degrees aligns or misaligns the port with the inlet and outlet, allowing or blocking flow. The plug is held in place by a bonnet and can be lubricated or sleeved to reduce friction and ensure a tight seal. In a tapered plug, the taper provides a wedging action that enhances sealing under pressure.
Common Materials
WCB (cast carbon steel), CF8M (cast stainless steel 316), Cast iron (ASTM A126), Ductile iron (ASTM A395), Alloy 20, Hastelloy C, PTFE (for soft seats/sleeves), Graphite (for packing)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal Diameter15–300 mmStandard sizes for pipeline compatibilityISO 6708
Operating Temperature-40–150 °CSeat material limits range
Leakage Rate0–0.1 mL/minClass A for metal seats, Class D for soft seatsISO 5208
Flow Coefficient (Cv)10–1200 US gal/minDepends on port size and design
Seat MaterialPTFE, PEEK, MetalPTFE for chemical resistance, PEEK for high temp
Body MaterialWCB, CF8, CF8MWCB for carbon steel, CF8/CF8M for stainlessASTM A216, A351
End ConnectionsFlanged, Threaded, Socket WeldFlanged for high pressure, threaded for small sizesASME B16.5, B16.11
Operation TypeManual, Gear, Pneumatic, ElectricManual for small valves, actuated for remote control
Pressure RatingPN16–PN40Higher rating for higher pressure applicationsISO 7268
Face-to-Face Dimension130–500 mmMust match piping layoutISO 5752
Weight5–150 kgVaries with size and material

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Valve Body
    Houses the tapered or cylindrical bore the plug turns in.
  • Plug
    Ported plug that aligns or misaligns with the flow path.
  • Bonnet
    Holds the plug in the body.
  • Sleeve Optional
    Lining that reduces friction and helps the seal.
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Plug Valve

13 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Hikelok
China (manufacturing per official site; brand and supplying legal entity to be verified), CN

The official part PV1-M6-V04-316 lists two 6 mm tube connections, 316 body, FKM seals and two-way straight pattern; the company introduction on the same domain states that Sailuoke manufactures instrument fittings and valves in China and lists plug valves. Only instrument plug valves were reviewed and an old 2M manifold link is not used instead; orifice, temperature-pressure derating and certification are verified with order documents.

Listed on the company's own website · profile compiled by CNFX from public sources
View source page ↗ hikelok.com · recorded 2026-10-03
CHINA VIHUNG VALVE CO. LTD.
Shanghai, CN
Also makes: Butterfly Valve, Knife Gate Valve, Check Valve and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “ORBIT Plug Valve”
View source page ↗ vihung.com · recorded 2026-08-22
CJan Fluid Technology Co., Ltd.
Shanghai, CN
ISO 9001:2015 IATF 16949
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “PFA Plug Valve - PPV”
View source page ↗ cjanfluid.com · recorded 2026-08-22
Dongying Lake Petroleum Technology CO., Ltd
Shandong, CN
ISO GOST
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Plug Valve”
View source page ↗ lakepetro.com · recorded 2026-08-22
Landee Industries
Xiamen, Fujian, CN
Founded 1994230+ staff
ASME U-Stamp
Also makes: Butterfly Valve, Heat Exchanger, Valve Actuator and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Plug Valves”
View source page ↗ landee.cn · recorded 2026-08-22
Sunthai Extractor
Zhejiang, CN
200-500 staff20,000 m²
ISO 9001:2015
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “3 Way Sanitary Plug Valve”
View source page ↗ sunthaiextractor.com · recorded 2026-08-22
Wenzhou Deyi Machinery
Wenzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “pfa lined plug valve”
View source page ↗ technologyvalve.com · recorded 2026-08-22
Neway Valve (Suzhou) Co., Ltd.
Suzhou, Jiangsu, CN
Also makes: Power Plant, Transmission Lines, Control Valve and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Sleeved Plug Valve”
View source page ↗ newayvalve.com · recorded 2026-08-26
AFC Valve
Hefei, Anhui, CN
Also makes: Butterfly Valve, Gate Valve, Pinch Valve and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Lubricated Plug Valve”
View source page ↗ afc-valve.com · recorded 2026-08-28
Anhui Tianyu Petroleum Equipment Manufacturing Co., Ltd.
Xuancheng, Anhui, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Plug Valves”
View source page ↗ fluidendpumpparts.com · recorded 2026-09-03
ANWVF
Wenzhou, Zhejiang, CN
Also makes: Gate Valve, Check Valve, Diaphragm Valve and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Plug Valve”
View source page ↗ wvf-valve.com · recorded 2026-09-16
AUTORUN Control
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pneumatic Plug -Valve”
View source page ↗ autorun-control.com · recorded 2026-08-26
Baltic Valve Co., Ltd.
Xiamen, Fujian, CN
Also makes: Check Valve, Ball Valve, Gate Valve and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Pressure Balance Lubricated Plug Valve (14)”
View source page ↗ baltic-valve.com · recorded 2026-09-10
View All Factories

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

Buyer enquiry

Request manufacturing insight for Plug Valve

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes
Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here
We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman
CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What to include
Share your product specifications, quantity, destination and target delivery date.

Your business information is used only to process this request.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at [email protected].

Frequently Asked Questions

What are the typical applications of plug valves?

Plug valves are used in oil and gas, chemical, water treatment, and pulp and paper industries for on-off and throttling service, especially where tight shutoff and low pressure drop are required.

What standards apply to plug valves?

Common standards include API 599, ASME B16.34, ASME B16.10, ASME B16.5, ISO 5211, and GB/T 12237. These are procurement references; actual compliance must be verified with the manufacturer.

What materials are available for plug valve bodies and seats?

Body materials include WCB, CF8M, cast iron, ductile iron, Alloy 20, and Hastelloy C. Seat materials include PTFE, RPTFE, and PEEK. Selection depends on service conditions.

How do I select the right plug valve for my application?

Consider nominal size, pressure rating, temperature range, end connections, body and seat materials, port type, and any required certifications. Always verify with the manufacturer for specific model suitability.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Plug Valve.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Need to Manufacture Plug Valve?

Compare manufacturer profiles with relevant product and process capability.

Previous Product
Z-axis Ram/Spindle
Last Product
Get QuotesChat