HySecurity MX001258, FLOW CONTROL VALVE, 1/8" NPT
HySecurity MX001258 is a 1/8 inch NPT hydraulic flow control valve used in select HySecurity hydraulic gate operator applications. Current listings commonly identify this part as a flow control valve for SwingRiser / HRG and StrongArm M30/M50 NP applications where the parts diagram confirms fitment.
This valve is used to control hydraulic flow in the approved circuit location. Because hydraulic valves are function-specific, thread-specific, and operator-specific, MX001258 should not be selected by appearance alone. Confirm the operator model, serial number, valve location, 1/8 inch NPT requirement, manifold or hydraulic circuit layout, and HySecurity parts diagram before ordering.
What This Flow Control Valve Does
A hydraulic flow control valve helps regulate oil flow through a specific part of the hydraulic system. In a gate operator, controlled hydraulic flow can affect movement speed, smoothness, timing, and how the operator responds under load.
A worn, restricted, contaminated, misadjusted, or incorrect flow control valve can contribute to slow travel, uneven movement, inconsistent speed, jerky operation, or hydraulic performance issues. Similar symptoms can also be caused by low hydraulic fluid, contaminated oil, hose restrictions, leaking fittings, pressure relief problems, worn cylinders, pump wear, incorrect valve adjustment, or gate binding.
Compatible With
Use HySecurity MX001258 only where the operator parts diagram, original valve marking, or HySecurity documentation confirms this part number.
- Select HySecurity SwingRiser hydraulic gate operator applications where MX001258 is listed as the flow control valve.
- Select HySecurity SwingRiser / HRG applications where the parts diagram confirms a 1/8 inch NPT flow control valve.
- Select HySecurity StrongArm M30 NP and StrongArm M50 NP applications where MX001258 is listed.
- Repairs where the original valve is marked, listed, or cross-referenced as HySecurity MX001258.
- Hydraulic service work where the valve location, thread size, and circuit function match the MX001258 flow control valve.
Possible Operator Family Use
Current listings associate MX001258 with the following HySecurity operator families where the parts diagram confirms fitment:
- HySecurity SwingRiser applications where MX001258 is listed.
- HySecurity SwingRiser HRG applications where MX001258 is listed.
- HySecurity StrongArm M30 NP no-power applications where MX001258 is listed.
- HySecurity StrongArm M50 NP no-power applications where MX001258 is listed.
Important Compatibility Warning
MX001258 should not be confused with other hydraulic valve cartridges or manifold parts used in HySecurity operators. A flow control valve, check valve, relief valve, manual bypass valve, directional valve, and complete manifold assembly can all be part of the hydraulic system, but they do not perform the same job.
Do not install this valve in a location where the parts diagram calls for a check valve, relief valve, bypass valve, directional valve, or different thread size. An incorrect hydraulic valve can affect speed, pressure, gate movement, pressure holding, heat generation, and safe operation.
Similar Parts That Are Not Automatically Interchangeable
- mx000352-manifold-check-valve-cartridge.html">HySecurity MX000352 - manifold check valve cartridge; not the same as MX001258.
- mx001255-manual-bypass-valve.html">HySecurity MX001255 - manual bypass valve used in some StrongArm M30/M50 NP references; not the same as this flow control valve.
- HySecurity MX000174 - 3000 PSI relief valve used in some StrongArm M30/M50 NP references; not the same as this flow control valve.
- mx001257-2-position-manual-directional-valve-cartridge.html">HySecurity MX001257 - 2-position manual valve cartridge; not the same as this 1/8 inch NPT flow control valve.
- mx001127-flow-control-manifold-kit-swingriser-single-hrg-220.html">HySecurity MX001127 - SwingRiser Single flow control manifold kit; not the same as an individual 1/8 inch NPT flow control valve.
- mx001128-braking-manifold-assembly-swingriser-twin-hrg-222.html">HySecurity MX001128 - SwingRiser Twin flow control manifold kit; not the same as an individual 1/8 inch NPT flow control valve.
- Hydraulic hoses, fittings, pump packs, motors, cylinders, and manifold blocks - related hydraulic components, but not interchangeable with MX001258.
Not Intended For
- Hydraulic check valve replacement unless the parts diagram specifically lists MX001258.
- Manual bypass valve replacement.
- Hydraulic relief valve replacement.
- Directional valve or solenoid valve replacement.
- Complete flow control manifold kit replacement.
- Hydraulic hose, fitting, pump pack, cylinder, or motor replacement.
- Electrical repairs involving limit switches, reset switches, disconnect switches, controllers, contactors, or sensors.
- Any hydraulic location requiring a different thread size or valve function.
Features & Specifications
| Feature / Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX001258 |
| Product Type | Hydraulic flow control valve |
| Thread Size | 1/8 inch NPT |
| Common Description | Flow control valve, 1/8 inch NPT |
| Hydraulic Function | Helps regulate hydraulic oil flow where specified by the operator circuit |
| Common Application | Select SwingRiser / HRG and StrongArm M30/M50 NP hydraulic applications |
| Electrical Rating | Not applicable - hydraulic valve, not an electrical coil or solenoid |
| Adjustment Note | Hydraulic flow adjustments should be made only according to HySecurity service information by a qualified technician |
| Package Contents | Verify current package contents before ordering; seals, fittings, or related hardware may be separate unless stated |
Also Known As / Related Part Numbers
- MX001258
- HySecurity MX001258
- Nice HySecurity MX001258
- HYS-MX001258
- HYS-mx001258
- HySecurity flow control valve
- HySecurity 1/8 inch flow control valve
- HySecurity 1/8 inch NPT flow control valve
- Flow Control Valve, 1/8 inch NPT
- Flow Control Valve for SwingRiser / HRG
- Flow Control Valve for StrongArm M30/M50 NP
- MX000352 - related manifold check valve; not the same part
- MX001255 - related manual bypass valve; not the same part
- MX000174 - related 3000 PSI relief valve; not the same part
- MX001257 - related 2-position manual valve cartridge; not the same part
Related Parts and Accessories
The correct related parts depend on the operator model, hydraulic circuit, valve location, and cause of the original problem. Inspect the hydraulic system before replacing only the flow control valve.
- MX000352 manifold check valve cartridge - related hydraulic valve, not the same function.
- MX001255 manual bypass valve - separate hydraulic function and not interchangeable with this flow control valve.
- MX000174 relief valve - pressure relief component, not a flow control valve.
- Hydraulic seals and thread-related sealing materials - verify what is specified for the fitting type and manufacturer service procedure.
- Hydraulic hoses and fittings - inspect for leaks, restrictions, or damage during service.
- Hydraulic pump pack components - separate assemblies that may affect pressure and flow.
- Hydraulic cylinders - inspect if the gate is moving unevenly, drifting, or not holding position as expected.
Technician Note
Before replacing MX001258, confirm that the symptom points to the flow control valve and not another hydraulic or mechanical issue. Slow or uneven movement can come from a restricted flow valve, but it can also come from low fluid level, contaminated fluid, hose restrictions, leaking fittings, pump wear, relief valve adjustment, cylinder bypass, gate binding, or incorrect prior adjustments.
Do not use this valve as a general-purpose speed fix without checking the operator service information. Flow control changes can affect gate speed, hydraulic heat, force behavior, and stopping performance. If the valve is adjustable, adjustment should be made carefully and only within the manufacturer's procedure.
Before Ordering, Confirm
- The required part number is MX001258.
- The operator parts diagram lists MX001258 for the flow control valve location.
- The operator is a compatible SwingRiser / HRG or StrongArm M30/M50 NP application where the parts diagram confirms fitment.
- The required thread size is 1/8 inch NPT.
- The valve location requires a flow control valve, not a check valve, manual bypass valve, relief valve, directional valve, or solenoid valve.
- The hydraulic issue is not being caused by low fluid, contaminated oil, leaking hoses, damaged fittings, worn cylinders, pump problems, or gate binding.
- Any seals, fittings, or related hardware needed for replacement are included or ordered separately.
- The operator has not been modified with a different manifold, valve body, or hydraulic circuit.
Installation and Service Notes
- Secure the gate and operator before servicing hydraulic components.
- Follow the manufacturer's service procedure before opening hydraulic circuits or removing hydraulic valves.
- Keep the valve, fittings, and hydraulic openings clean during service.
- Do not install this valve in a location that requires a different valve type or thread size.
- Do not overtighten NPT fittings or use incorrect sealing materials.
- Inspect hoses, fittings, seals, and surrounding hydraulic components for leaks or damage.
- After service, check for leaks, smooth travel, correct speed, proper stopping, and safe gate operation.
Professional Advisory
Hydraulic flow control valve replacement should be performed by a qualified gate technician when the repair involves hydraulic pressure, speed adjustment, manifold diagnosis, heavy gate movement, or safety-critical operation. Do not bypass limit controls, inherent entrapment protection, photo eyes, safety edges, hydraulic protections, controller protections, or any required safety devices during testing.
Product Questions & Answers
What is HySecurity MX001258?
HySecurity MX001258 is a 1/8 inch NPT hydraulic flow control valve used in select HySecurity hydraulic gate operator applications.
What operators use MX001258?
MX001258 is commonly associated with select SwingRiser / HRG and StrongArm M30/M50 NP hydraulic systems. It should only be used where the parts diagram lists this exact flow control valve.
Is MX001258 the same as a check valve?
No. MX001258 is a flow control valve. It should not be confused with MX000352, which is a related manifold check valve cartridge used in some hydraulic applications.
Is MX001258 the same as a relief valve?
No. A flow control valve and a relief valve perform different hydraulic functions. MX001258 should not be substituted for relief valve part numbers such as MX000174.
Can this valve affect gate speed or movement?
Yes. A flow control valve can affect hydraulic flow and movement behavior where it is used in the circuit. Slow, uneven, or jerky movement may also be caused by low fluid, contaminated oil, hose restrictions, pump problems, cylinder bypass, relief valve issues, or gate binding.
Does MX001258 include seals or fittings?
Package contents should be verified before ordering. Seals, fittings, or related hardware may be separate unless the current product listing specifically includes them.
Should a technician replace or adjust this flow control valve?
Yes. A qualified gate technician is recommended because hydraulic flow control service can affect gate speed, hydraulic pressure behavior, heat, and safety-critical operator performance.
