PTFE PFA Lining Flange Connection Ball Valves (two-piece, Three-piece)

Flange connection ball valves (two-piece and three-piece types) are critical control components widely applied in various industrial pipeline systems, designed for on-off control and throttling adjustment of media. The two-piece and three-piece structural designs not only ensure the overall tightness and structural stability of the valve but also provide significant convenience for installation, maintenance, and disassembly. Specifically, the two-piece flange ball valve features a compact structure, integrating the valve body and one end of the connection part, which is suitable for occasions with relatively simple working conditions and high requirements for space saving. The three-piece flange ball valve is composed of a middle valve body and two end covers; its detachable structure allows for easy removal of the middle valve body for maintenance or parts replacement without disassembling the entire pipeline, making it ideal for complex working conditions and frequent maintenance needs.

I. Product Introduction

This series of ball valves is mainly made of carbon steel for key components, complemented by high-performance lining and sealing materials. It exhibits excellent corrosion resistance, pressure-bearing capacity, and wear resistance, and can be widely used in petroleum, chemical, metallurgy, water treatment, power generation, and other industries. It is suitable for various media such as water, oil, gas, and some corrosive fluids, effectively ensuring the safe and stable operation of the pipeline system.

II. Product Features

Superior Structural Design: The two-piece and three-piece structures are reasonably designed. The two-piece type has a compact size, small occupied space, and low flow resistance, ensuring efficient media circulation. The three-piece type enables separate disassembly and maintenance of the valve body, greatly reducing maintenance costs and downtime, and improving the operability of the equipment.
Excellent Sealing Performance: Adopting high-quality lining/seat materials such as PTFE (F4), PCTFE (F3), FEP (F46), and PO, combined with advanced sealing technology, the valve achieves reliable sealing under both positive and negative pressure conditions, effectively preventing media leakage and ensuring the safety of the production environment.
Strong Adaptability: With a nominal pressure range of PN0.6~1.6MPa and a nominal diameter range of DN15~350mm, it can meet the needs of different pipeline specifications and working pressure requirements. The carbon steel material used for the main components has good mechanical properties and toughness, adapting to various harsh working environments.
Easy Operation and Maintenance: The valve is available in multiple operation modes such as manual, pneumatic, worm gear, and electric, to meet the needs of different automation levels. The key components have standardized dimensions and interchangeability, facilitating quick replacement of wearing parts. Meanwhile, the smooth surface of the sphere reduces friction loss and extends the service life of the valve.
Compliance with Strict Standards: The design, manufacturing, structure length, flange size, pressure test, marking, and filling all comply with national and industry standards such as GB/T 12237, HG/T 3704, HG/T 20592, and GB/T 13927, ensuring the product’s quality and compatibility.

III. Technical Data (Carbon Steel)

1. Basic Parameters

Nominal Pressure: PN0.6~1.6 (MPa)

Nominal Diameter: DN15~350 (mm)

Valve Type: Two-piece/Three-piece flange connection ball valve (floating ball type)

2. Floating Ball Valve Torque (Carbon Steel, Pressure: 1.6MPa)

Caliber (DN)	Stresses (MPa)	Torques (N·m)
15	1.6	14
20	1.6	14
25	1.6	14
32	1.6	22
40	1.6	23
50	1.6	34
65	1.6	69
80	1.6	89
100	1.6	171
125	1.6	318
150	1.6	432
200	1.6	665
250	1.6	1245
300	1.6	2495

3. Implementation Standards

Item	Standard Number
Design and Manufacturing	GB/T 12237
Structure Length	HG/T 3704
Flange Size	HG/T 20592
Pressure Test	GB/T 13927
Symbolize	GB/T 12220
Fill	JB/T 7928

4. Basic Model (Fully Lined, Carbon Steel Base Material)

Operation Mode	Model	Lining Feature
Manually	Q41F4, Q41PFA, Q41F46	Full Lining
Pneumatic	Q641F4, Q641PFA, Q641F46	Full Lining
Worm-gear Rotation	Q341F4, Q341PFA, Q341F46	Full Lining
Electricity	Q941F4, Q941PFA, Q941F46	Full Lining

5. Main Parts and Components Material Table (Carbon Steel)

Serial Number	Part Name	Carbon Steel Material	Note
1	Valve Body, Valve Cover	WCB	–
2	Sphere	WCB	–
3	Lining/Seat	PT, FE(F₄), PCTFE(F3), FEP(F46), PO	Lining materials for corrosion resistance
4	Packing Gland	WCB	–
5	Packing Material	PTFE(F4) Polytetrafluoroethylene	High-temperature and corrosion-resistant
6	Stem (Note: Corrected from “Video Game Controller”)	WCC	Transmits operation torque

Ⅳ．The main shape and connection size

ominal diameter	Standard value (unit: mm)							reference point
	L	D	D₁	D₂	f	b	Z-Φd	W(kg)
	PN1.0MPa
15	140	95	65	45	3	16	4-Φ14	2.5
20	140	105	75	58	3	18	4-Φ14	3
25	150	115	85	68	3.5	18	4-Φ14	4.5
32	165	140	100	78	3.5	18	4-Φ18	5.7
40	180	150	110	88	3.5	18	4-Φ18	7
50	200	165	125	102	4	18	4-Φ18	9.5
65	220	185	145	122	4	18	8-Φ18	15
80	250	200	160	138	4	20	8-Φ18	19
100	280	220	180	158	4.5	20	8-Φ18	33
125	320	250	210	188	4.5	22	8-Φ18	58
150	360	285	240	212	4.5	22	8-Φ22	93
200	400	340	295	268	5	24	8-Φ22	155
250	450	395	350	320	5	26	12-Φ22	210
300	610	445	400	370	5	26	12-Φ22	330
350	686	505	460	430	5	26	16-Φ22	440
400	762	565	515	482	5	26	16-Φ26	550
PN1.6MPa
15	140	95	65	45	3	16	4-Φ14	2.5
20	140	105	75	58	3	18	4-Φ14	3
25	150	115	85	68	3.5	18	4-Φ14	4.5
32	165	140	100	78	3.5	18	4-Φ18	5.7
40	180	150	110	88	3.5	18	4-Φ18	7
50	200	165	125	102	4	18	4-Φ18	9.5
65	220	185	145	122	4	18	8-Φ18	15
80	250	200	160	138	4	20	8-Φ18	19
100	280	220	180	158	4.5	20	8-Φ18	33
125	320	250	210	188	4.5	22	8-Φ18	58
150	360	285	240	212	4.5	22	8-Φ22	93
200	400	340	295	268	5	24	12-Φ22	155
250	450	405	355	320	5	26	12-Φ26	210
300	610	460	410	378	5	28	12-Φ26	350
350	686	520	470	428	5	30	16-Φ26	460
400	762	580	525	490	5	32	16-Φ30	550
			PN2.5MPa
15	140	95	65	45	3	16	4-Φ14	2.5
20	140	105	75	58	3	18	4-Φ14	3
25	150	115	85	68	3.5	18	4-Φ14	4.5
32	165	140	100	78	3.5	18	4-Φ18	5.7
40	180	150	110	88	3.5	18	4-Φ18	7
50	200	165	125	102	4	20	4-Φ18	9.5
65	220	185	145	122	4	22	8-Φ18	15
80	250	200	160	138	4	24	8-Φ18	19
100	280	235	190	160	4.5	24	8-Φ22	33
125	320	270	220	188	4.5	26	8-Φ26	58
150	360	300	250	218	4.5	28	8-Φ26	93
200	400	360	310	278	5	30	12-Φ26	155
250	450	425	370	335	5	32	12-Φ30	210
300	610	485	430	395	5	34	16-Φ30	230
350	686	555	490	450	5	38	16-Φ33	250

About Us

Founded in 2016, Shanghai Wangye Valve Manufacturing Co., Ltd. is a professional industrial fluid control manufacturer with nearly a decade of experience, integrating R&D, intelligent production, sales, and customized solutions. Leveraging Shanghai’s advanced manufacturing advantages, we’ve built a reliable brand across petrochemicals, power, metallurgy, water treatment, and new energy industries, offering gate/ball/butterfly valves and tailored solutions for harsh conditions. Backed by advanced equipment, full-process quality control, and ISO certifications, we adhere to “Integrity, Quality, Customer Focus, Innovation” and provide comprehensive services, striving for long-term cooperation and continuous technological upgrading.

Why Choose Us

Talent and Efficient Team

WYE always insists that employees are the most valuable asset of the enterprise and the future of WYE; Adhere to prioritizing talent selection, education, and utilization in the development of enterprises; introducing talent as the highest return investment behavior. We regard talent as the primary resource for effective management, and pursue a high degree of harmony and unity between employee personal development and enterprise development.We encourage you to have a special perspective, think independently, and be good at organizing resources from all parties. Always maintain a responsible attitude towards results and a positive team spirit that is willing to share in every task..

High End Processing Equipment Creating Excellent Product Quality

Advanced automated production equipment and sophisticated assembly line production demonstrate first-class quality.Technical experts directly participate in production to ensure the concealment and reliability of the product.The increasing awareness of high-quality products and the continuous supply of industrial products have made WYE constantly changing.No matter how the world changes, the persistent spirit of excellence among WTE people remains unchanged.

Warehouse Strength

In our facility, raw materials (including core components and packaging supplies) are strictly controlled via a real-time digital inventory system—tracking batches, shelf life, and storage conditions to boost traceability and cut waste. Semi-finished products, post-preliminary quality checks, are stored per strict industry standards: labeled with progress/inspection records to avoid cross-contamination and damage. Finished products are sorted into specialized warehouses by type, market, and delivery schedule, streamlining picking and reducing dispatch delays. This standardized process effectively boosts efficiency: cutting redundant steps by 30%, shortening fulfillment cycles by 20%, and minimizing inventory/shipment errors.

Customized Solutions & After-Sales Support

Tailored to the distinct demands of industries like petrochemicals, new energy, and metallurgy, WYE provides personalized industrial fluid control solutions—covering pre-project demand assessment, customized valve design (matching specific working conditions like pressure or medium type), and on-site technical consultation to align with clients’ operational scenarios. Additionally, we offer comprehensive after-sales support: including on-site installation guidance, regular equipment maintenance inspections, and 24/7 responsive fault troubleshooting, which ensures the stable operation of clients’ systems and strengthens long-term cooperative partnerships.

Our Services

Our company is a one-stop solution for all valve-related needs, offering customization to tailor valves to unique specifications, professional installation & commissioning for seamless integration and optimal performance, maintenance & repair to keep valves in top condition and extend their lifespan, and technical support & consultation for expert advice on selection, optimization, and troubleshooting throughout every project stage.

Our Products

EXHIBITION & PROJECTS

COOPERATIVE PARTNER

Valve Solutions That Transform Your Operations

Our valves offer superior durability, precise control, and tailored solutions for your industrial, commercial, or residential needs. Don’t miss the opportunity to get reliable valve products and expert support.