Standard Brass Ball Valves: ISO 228 Female Threaded Ends, PTFE Seated, Lever Operated

Introduction & Main Applications

A brass ball valve is a high-performance mechanical device utilized to open, close, and precisely regulate the flow of fluids within a piping infrastructure. Featuring a quarter-turn design, it utilizes a hollow, perforated, and pivoting ball to control flow, offering quick shut-off and excellent reliability. Manufactured from premium brass copper alloys, these valves exhibit outstanding structural durability, superior corrosion resistance, and anti-fouling characteristics, making them highly cost-effective and dependable for long-term operations.

Brass ball valves: standard FF length, double female threaded ends as per ISO 228, PTFE seated, lever operated. Available in nickel-plated coating or no coating.

In modern fluid management, this standard series is widely deployed in municipality water supply networks, commercial plumbing, industrial water treatment facilities, HVAC systems, and irrigation systems. Its exceptional sealing performance and robust material composition prevent bio-fouling and chemical degradation, rendering it an ideal isolation component for critical water utility and plumbing networks worldwide.

Key Product Features & Engineering Advantages

• Standard Face-to-Face Dimensions: Designed in strict compliance with standard universal structural lengths, this ball valve features a highly compact profile. It perfectly fits space-restricted piping systems and high-density installations without compromising flow efficiency. This generalized design ensures superior interchangeability, fully conforming to engineering standards and utility regulations across Europe, the Middle East, Africa (EMEA), and South America.
• ISO 228 Female Threaded Ends: Both ports of the valve are precisely machined with parallel female threads according to ISO 228 (equivalent to DIN 259 and BS 2779). Female threaded ends allow direct, seamless, and leak-free coupling with male pipe fittings or equipment adapters. This design eliminates the need for complicated flanged joints or welding, significantly accelerating on-site assembly and simplifying future maintenance routines.
• Premium PTFE Soft Sealing: Equipped with high-integrity Polytetrafluoroethylene (PTFE) seats, the valve provides an optimized low-friction contact surface against the chrome-plated ball. This virgin PTFE material guarantees a bubble-tight, zero-leakage shutoff under demanding pressure conditions while ensuring smooth, low-torque operation throughout its lifecycle.
• Ergonomic Lever Operation: The valve features a heavy-duty, flat lever handle that enables quick, manual quarter-turn actuation. The flat handle serves as a clear visual indicator of the flow status—when parallel to the pipe, the valve is fully open; when perpendicular, it is completely closed, ensuring straightforward on-site monitoring and error-free operation.

Technical Specifications

Engineered for reliable performance in medium-to-high pressure industrial environments, our standard series parameters are specified below:

• Nominal Pressure: PN25 / 25 bar (362.5 psi)
• Working Temperature Range: -10 ℃ to +120 ℃ (14 ℉ to 248 ℉)
• Size Range Availability: 1/4″ to 4″ (DN8 to DN100)
• Applicable Media: Water, non-corrosive liquids, saturated steam, and compressed air

Component Material Grade Specifications

Dimensional Data

drawing of PN25 standard brass ball valve

Dimension(mm)	A	B	C	D	E
1/4"	40	23	39.2	87	9
3/8"	41	23	39.8	87	10
1/2"	48.4	29.5	54.2	95	14.8
3/4"	56	35.5	57.6	95	19
1"	65	42.7	60.6	126	24
1-1/4"	76	53	75.8	140	30.2
1-1/2"	85	63	81.3	140	37
2"	99	79	88.5	165	47
2-1/2"	132	102.5	121.5	224	62
3"	152	120.5	129.5	224	74
4"	178	144.5	141	283.5	90

Commercial Profiles & Supply Chain Logistics

• Model Number: HM1021 Series
• Brand Identity: HM Brand or custom OEM branding solutions.
• Inventory Status & Lead Time: Mass stock available for standard specifications; immediate dispatch within 3 business days.
• Flexible Payment Terms: T/T, L/C, etc.
• Global Shipping Details: Supported via sea freight (FCL/LCL), air freight, or international express couriers (FedEx, DHL, UPS).
• Industrial Packaging: Securely packed into eco-friendly inner cardboard boxes, enclosed in heavy-duty outer master cartons, and reinforced onto seaworthy, film-wrapped export pallets.
• FOB Price Range: USD 0.80 – USD 2.50 / Piece