Washer-Type Flow Restrictors
The MC family provides washer-type flow restriction in several outside diameters, including a model with a lug. Start with the installation format, then compare dimensions, flow requirements, and service access.
| <a href="#mc1900">MC1900</a> | Water-path projects evaluating a washer-type restrictor at a connection · Washer-type flow restriction · Verify outside diameter and installation dimensions |
|---|---|
| <a href="#mc1901">MC1901</a> | Water-path projects evaluating a washer-type restrictor at a connection · Washer-type with lug · Verify outside diameter and installation dimensions |
| <a href="#mc2100">MC2100</a> | Water-path projects evaluating a washer-type restrictor at a connection · Washer-type flow restriction · Verify outside diameter and installation dimensions |
| <a href="#mc2500">MC2500</a> | Water-path projects evaluating a washer-type restrictor at a connection · Washer-type flow restriction · Verify outside diameter and installation dimensions |
Models, Specifications and Technical Documents
The family specification sheets list POM / silicone materials, an operating temperature of 0–55°C, and OEM packaging. Review the actual assembly conditions before final selection.
MC1900
For connections between hand showers and shower hoses or risers, and for small spray-gun inlets. Also used with braided hoses and overhead showers; the soft washer simplifies installation at the connection.
| Model | MC1900 |
|---|---|
| Product format | Flat washer type flow restrictor |
| Outside diameter | 19mm |
| Listed flow range | 2-12L/min |
| Function | Flow restrictor / Water saving |
| Materials | POM / Silicone |
| Operating temperature | 0–55°C |
| Packaging | OEM |
MC1900 Dimensional Drawing (PDF)
Review the flow charts supplied for this model. Confirm the tested flow configuration, pressure units, and test conditions before making a comparison.
MC1901
For hand-shower-to-riser connections, small spray-gun inlets and other positions requiring frequent servicing. The lug makes the restrictor easier to remove for cleaning or replacement.
| Model | MC1901 |
|---|---|
| Product format | Flat washer type flow restrictor (with lug) |
| Outside diameter | 19mm (with lug) |
| Listed flow range | 2-12L/min |
| Function | Flow restrictor / Water saving |
| Materials | POM / Silicone |
| Operating temperature | 0–55°C |
| Packaging | OEM |
MC1901 Dimensional Drawing (PDF)
MC2100
Primarily for the inlet of pull-out kitchen faucet spray heads. Check the 22mm threaded connection specification; the integrated soft washer also serves as the connection washer.
| Model | MC2100 |
|---|---|
| Product format | Flat washer type flow restrictor |
| Outside diameter | 21mm |
| Listed flow range | 2-12L/min |
| Function | Flow restrictor / Water saving |
| Materials | POM / Silicone |
| Operating temperature | 0–55°C |
| Packaging | OEM |
MC2100 Dimensional Drawing (PDF)
MC2500
For faucet bodies and G3/4 inlet connections, including rear faucet inlets requiring flow restriction. The integrated soft washer also serves as the connection washer.
| Model | MC2500 |
|---|---|
| Product format | Flat washer type flow restrictor |
| Outside diameter | 25mm |
| Listed flow range | 2-12L/min |
| Function | Flow restrictor / Water saving |
| Materials | POM / Silicone |
| Operating temperature | 0–55°C |
| Packaging | OEM |
MC2500 Dimensional Drawing (PDF)
Installation and Fit
Check the seat, compression arrangement, and sealing requirements. Outside diameter alone does not establish a thread size or confirm that the component can replace an existing seal.
Include an assembly drawing or installation-area photo with available space, required functions, and operating pressure. After the structural review, validate the finished assembly with samples.
Selection FAQ
How do MC1900 and MC1901 differ?
Both specification sheets list a 19 mm outside diameter. MC1901 is additionally identified as having a lug. Check the seat and removal clearance before choosing or substituting a model.
Does every model in the family have a different application?
Model numbers alone do not establish different applications. Select by function and format first, then check dimensions, flow configuration, and assembly conditions.
Is the listed flow range the delivered flow setting?
Use the range as a specification reference. Define the model, target flow, test pressure, and tolerance for the delivered configuration.
Which sourcing documents can be reviewed?
Available dimensional documents are listed by model, with flow charts where supplied. Include any additional test, material, or destination-market document requirements in the inquiry.
Find a Model for Your Project
Share the finished product, installation position and drawing, required functions, target flow and pressure, expected quantity, and destination market. We will help review models, samples, and documentation requirements.
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