Isolation Valve (Per Line) for Manifold Systems

Product Specifications

Technical details and manufacturing context for Isolation Valve (per line)

Definition

An isolation valve (per line) is a critical component within a delivery manifold and valves assembly, designed to completely shut off or isolate fluid flow in individual pipeline branches. It enables selective operation, maintenance, or emergency shutdown of specific lines without affecting the entire manifold system, ensuring operational safety, flexibility, and minimal downtime during servicing. The valve operates by mechanically blocking the flow path through a movable element such as a gate, ball, or plug that seals against a seat when actuated. When closed, it creates a positive shut-off; when open, it allows full flow with minimal pressure drop. Actuation can be manual (handwheel, lever) or automated (pneumatic, electric, hydraulic). Common materials include stainless steel, carbon steel, brass, and ductile iron. Typical parameters for manifold isolation include nominal diameters from 15 to 100 mm (ISO 6708), operating pressures from 1.0 to 1.6 MPa, and a pressure rating of PN16 (ISO 7268). Operating temperature ranges from -10 to 80 °C for EPDM seals, with PTFE extending the range. Leakage rate is ≤0.03% (Rate A) for metal-seated valves per ISO 5208. Flow coefficient (Kv) ranges from 2.5 to 120. Body materials are typically WCB or CF8M (ASTM A216/A351), with seat materials of PTFE or EPDM. End connections are flanged or threaded, DN15–DN100 (ISO 7005). Weight varies from 2 to 25 kg. Actuation can be manual lever or pneumatic actuator, with ingress protection IP65 for pneumatic actuators (IEC 60529). Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The isolation valve blocks flow by moving a gate, ball, or plug against a seat. When closed, the element creates a tight seal, preventing fluid passage. When open, the element retracts fully, allowing flow with minimal resistance. Manual actuation uses a handwheel or lever; automated actuation uses pneumatic, electric, or hydraulic systems. The valve is designed for positive shut-off, ensuring safe isolation of individual lines.

Common Materials

Stainless Steel, Carbon Steel, Brass, Ductile Iron

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	15–100 mm	Common sizes for manifold isolationISO 6708
Operating Pressure	1.0–1.6 MPa	Below 1.0 MPa seat load is insufficient
Pressure Rating	PN16	Flange rating for standard serviceISO 7268
Operating Temperature	-10–80 °C	For EPDM seals; PTFE extends range
Leakage Rate	≤0.03 %	Rate A for metal-seated valvesISO 5208
Flow Coefficient	2.5–120 Kv	Depends on size and design
Body Material	WCB/CF8M	Carbon steel or stainless steelASTM A216/A351
Seat Material	PTFE/EPDM	PTFE for chemical resistance
End Connection	DN15–DN100	Flanged or threadedISO 7005
Weight	2–25 kg	Varies with size and material
Actuation Type	Manual/Pneumatic	Manual lever or pneumatic actuator
Ingress Protection	IP65	For pneumatic actuatorIEC 60529

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
Main pressure-containing structure that houses internal components and provides pipeline connections.

Material: Stainless Steel
Closure Element Part
Movable part (ball, gate, plug) that blocks or allows flow through the valve.

Material: Stainless Steel
Stem Part
Connects actuator to closure element, transmitting motion to open or close the valve.

Material: Stainless Steel
Seat Part
Sealing surface that contacts closure element to provide leak-tight shut-off.

Material: PTFE/Elastomer
Actuator
Mechanism (manual or automated) to operate the valve open/close position.

Material: Aluminum/Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Delivery Manifold & Valves

View system integration details

Manufacturers of Isolation Valve (per line)

Manufacturer profiles associated with Isolation Valve (per line).

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the purpose of an isolation valve per line?

It isolates individual pipeline branches within a manifold system, allowing maintenance, repair, or flow control without shutting down the entire system.

What materials are commonly used?

Common materials include stainless steel, carbon steel, brass, and ductile iron. Body material may be WCB or CF8M, and seats may be PTFE or EPDM.

What are typical operating parameters?

Nominal diameter ranges from 15 to 100 mm, operating pressure from 1.0 to 1.6 MPa, and temperature from -10 to 80 °C for EPDM seals. Leakage rate is ≤0.03% for metal-seated valves.

How is the valve actuated?

Actuation can be manual via handwheel or lever, or automated via pneumatic, electric, or hydraulic systems. For pneumatic actuators, ingress protection is typically IP65.

Data Basis

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Preliminary Technical Classification

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pressure:	Up to 600 psi (41 bar)
flow rate:	0-500 GPM (0-1136 L/min)
temperature:	-20°C to 150°C
slurry concentration:	Up to 30% solids by weight

Isolation Valve (per line)

Product Specifications

Applied To / Applications

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