Reduced Bore Brass Ball Valve: Versatile FF lengths, Dual Handle Options

Overview & Typical Applications

A Reduced Bore Brass Ball Valve (also known as a reduced port ball valve) features a flow aperture inside the ball that is one size smaller than the connecting pipeline’s nominal diameter. This optimized internal geometry delivers exceptional pressure control, reduces operating torque, and minimizes thermal stress on piping systems without compromising flow efficiency. Manufactured from forged corrosion-resistant brass, these valves serve as reliable isolation units in modern fluid handling networks.

In municipal waterworks, HVAC, and industrial plumbing systems, reduced bore brass ball valves play a crucial role in flow regulation, district metering, and backflow prevention. They are widely used in potable water distribution lines, commercial heating circuits, water treatment plant manifolds, and compact pump skids where stable pressure drops, compact dimensions, and leak-tight shutoff are required.

Key Features & Design Standards

• Dual Handle Options (T-Handle & Flat Lever) To accommodate diverse installation spaces and operating conditions, our reduced bore brass ball valves offer flexible control mechanisms: a compact T-Handle ideal for tight installations, manifold enclosures, and restricted cabinet layouts where clearance for a full rotational stroke is limited, alongside an ergonomic Flat Lever Handle designed for standard pipeline installations that require higher leverage, quick quarter-turn action, and clear visual indication of open/closed status..
• Versatile Face-to-Face (FF) Dimensions Recognizing that replacement and retrofit projects require seamless inline compatibility, these valves feature versatile face-to-face (FF) structural lengths—available in both standard and extended options. Whether installing into compact manifold setups or replacing legacy valves with longer lay lengths, our flexible structural dimensions minimize piping modifications and field installation labor. (Refer to the technical table below for precise structural length options.)
• Flexible Threaded End Configurations: To ensure seamless integration with standard piping materials, we provide both Female x Female (F x F / Double Female) and Male x Female (M x F) threaded end options. Conforming to international pipe thread standards (ISO 228-1, BSP, or NPT), these threaded connections allow direct attachment to male nipples, flexible hoses, or female fittings.

Technical Specifications

Both the standard length and extended face-to-face product lines maintain identical working pressure, temperature thresholds, material grades, and size ranges.

• • Nominal Pressure (PN): 16 bar / 232 psi
  • Working Temperature Range: -10°C to +120°C (14°F to 248°F)
  • Port Type: Reduced Bore / Reduced Flow
  • End Connections: ISO 228-1 Double Female Parallel Pipe Threads

Material Construction

Component Part	Material
Body	Brass
Bonnet	Brass
Ball	Brass
Seal	PTFE
Stem	Brass
O-ring	NBR
O-ring	Fluorubber
Handle	Iron or steel
Nut	Stainless steel

Engineering Drawing & Dimensional Parameters

Dimension	A		B		C		D		E
(mm)	Standard F to F	Extended F to F	Standard F to F	Extended F to F	Standard F to F	Extended F to F	Standard F to F	Extended F to F	Standard F to F	Extended F to F
1/2"	46	46.8	23	27	38	41	87	87	10	13.5
3/4"	50	51.6	29.5	33	52.5	58	95	95	14.8	18
1"	61	61	35	40	57	60	95	126	19	22
1-1/4"	67	74	42.7	51	62.5	67	126	126	24	29
1-1/2"	79	83	53	62	72.5	83	140	140	30.2	37
2"	87	99	63	76.2	76.5	94	140	140	37	45
2-1/2"	125	125.5	96	96	111	110	224	224	57	57
3"	141.5	142	123	113	123	118	224	224	68	68
4"	163.5	162	195	140	135	133	224	224	84	85

Commercial Profiles & Supply Chain Logistics

• Model Number: HM1061 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 0.70 – USD 2.50 / Piece

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