Stopper Pusher Assembly for Hydraulic Systems

Product Specifications

Technical details and manufacturing context for Stopper Pusher Assembly

Definition

The Stopper Pusher Assembly is a component used in hydraulic systems to position and insert stoppers or blocking elements at designated locations. It is part of a Hydraulic Stoppering System and ensures proper sealing and flow control by accurately deploying stoppers. The assembly converts hydraulic pressure into linear mechanical force through a piston-cylinder mechanism. When hydraulic fluid is directed into the cylinder, it drives the piston forward, pushing the attached stopper into position. Return springs or reverse hydraulic circuits retract the pusher when not engaged. The assembly is available with chrome-plated steel or stainless steel bodies, and high-grade seals. Key parameters include operating pressure of 1.0–1.6 MPa, stroke length of 25–50 mm, push force of 500–1500 N, operating temperature of -20 to 80 °C, sealing material NBR (FKM optional for high temperature), body material 304 (316L available for corrosive media), surface treatment zinc-plated (ISO 2081), mounting thread M20×1.5 (ISO 965-1), weight 0.8–1.2 kg, and IP65 rating (IEC 60529). These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The assembly is designed for use in hydraulic circuits where precise stopper placement is critical. It is not a standalone product but a component that integrates into a larger system. The working principle relies on hydraulic pressure, and the assembly includes seals and materials rated for the specified conditions. For selection, consider the required operating pressure, stroke, force, temperature, and media compatibility. Verify that the mounting thread and surface treatment meet your system requirements. Maintenance signals include seal wear, leakage, or reduced push force. Failure boundaries include operation outside the specified pressure, temperature, or media compatibility ranges. Always consult the manufacturer for model-specific data and compliance with applicable standards.

Working Principle

The assembly converts hydraulic pressure into linear mechanical force through a piston-cylinder mechanism. When hydraulic fluid is directed into the cylinder, it drives the piston forward, which in turn pushes the attached stopper into the desired position. The assembly typically includes return springs or reverse hydraulic circuits to retract the pusher when not engaged. The force generated is proportional to the hydraulic pressure and the piston area. The stroke length determines the travel distance of the stopper. Seals prevent fluid leakage and maintain pressure integrity. The assembly operates within specified pressure, temperature, and media compatibility limits.

Common Materials

Chrome-plated steel, Stainless steel, High-grade seals

Technical Parameters

Parameter	Typical range	Notes & selection driver
Stroke Length	25–50 mm	Custom strokes available on request
Push Force	500–1500 N	Force at rated pressure
Operating Temperature	-20–80 °C	Seals rated for this range
Sealing Material	NBR	FKM optional for high tempDIN 53504
Body Material	304	316L available for corrosive mediaASTM A276
Surface Treatment	Zinc-plated	Corrosion resistanceISO 2081
Mounting Thread	M20×1.5	Other threads on requestISO 965-1
Weight	0.8–1.2 kg	Depends on stroke
IP Rating	IP65	Dust-tight and water-jet protectedIEC 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

Pusher Rod Part
Directly contacts and pushes the stopper into position

Material: Chrome-plated steel
Hydraulic Cylinder
Converts hydraulic pressure into linear motion

Material: Stainless steel
Piston Part
Transfers hydraulic force to the pusher rod

Material: Hardened steel
Seal Kit Part
Prevents hydraulic fluid leakage

Material: Nitrile rubber
Mounting Bracket Part
Secures the assembly to the hydraulic system frame

Material: Carbon steel
Return Spring Optional
Retracts the pusher after insertion, on versions that return mechanically instead of by a reverse hydraulic circuit.

Applied To / Applications

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

Hydraulic Stoppering System

View system integration details

Manufacturers of Stopper Pusher Assembly

Manufacturer profiles associated with Stopper Pusher Assembly.

Sourcing Stopper Pusher Assembly from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the operating pressure range of the Stopper Pusher Assembly?

The reference operating pressure range is 1.0–1.6 MPa. However, this is a directory reference and must be verified for the specific model and application with the legal manufacturer or supplier.

What materials are used in the Stopper Pusher Assembly?

The assembly is available with chrome-plated steel or stainless steel bodies, and high-grade seals. The body material is typically 304 stainless steel, with 316L available for corrosive media. Surface treatment is zinc-plated per ISO 2081. Sealing material is NBR, with FKM optional for high temperatures.

How does the Stopper Pusher Assembly work?

It converts hydraulic pressure into linear mechanical force via a piston-cylinder mechanism. Hydraulic fluid drives the piston forward, pushing the stopper into position. Return springs or reverse hydraulic circuits retract the pusher when not engaged.

What are the maintenance signals for the Stopper Pusher Assembly?

Signs of wear include seal leakage, reduced push force, or erratic operation. Regular inspection of seals and hydraulic connections is recommended. Operation outside the specified pressure, temperature, or media compatibility ranges can lead to failure.

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.

Buyer enquiry

Request manufacturing insight for Stopper Pusher Assembly

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 we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Up to 300 bar
flow rate:	Up to 100 L/min
temperature:	-20°C to +80°C
slurry concentration:	Up to 15% solids by weight

Stopper Pusher Assembly

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards