CHF Series Check Valves / Non-Return Valves
The CHF Series is designed for one-way flow control and interface matching in research fluidic systems, analytical instruments, and laboratory tubing assemblies. The current range includes two-port check valves, inlet and outlet check valves, diaphragm check valves, and spring-loaded check valves, with clearly identified 10-32, 1/4-28, and 5/16-24 interfaces. Use interface, flow direction, and valve structure to progressively narrow the available models.
Research Check-Valve Series with Multiple Interfaces, Flow Directions, and Valve Structures
The supplied data explicitly provides model names, interface descriptors, inlet/outlet direction, valve structure, pricing, and quantity fields. Material, cracking pressure, operating temperature, and pressure rating are not provided and therefore remain subject to technical confirmation.
For standard inlet/outlet check-valve configurations, the current range includesCHF-418BC / CHF-418BRtwo 1/4-28 specifications andCHF-516BC / CHF-516BRtwo 5/16-24 specifications. Model names explicitly identify inlet or outlet direction, so the first selection step is to confirm the required flow direction at the installation point.
For applications requiring adiaphragm structure, current models include CHF-1032MC, CHF-1032MR, CHF-1428MC, and CHF-1428MR. The 1032 group corresponds to 10-32 and the 1428 group to 1/4-28; each group includes both inlet and outlet versions.
For models explicitly identified with aSpring-Loaded structure, current options include CHF-1032TBC, CHF-1032TBR, CHF-1428TBC, and CHF-1428TBR. These likewise form 10-32 and 1/4-28 interface groups with paired inlet and outlet versions.
CHF-214BECHF-214BE is identified in the current data as a two-port check valve and differs from the inlet/outlet-specific models above. The source also includes two kit purchase items: a “Two-Port Check Valve / Kit” and a “Shutoff Valve (1/4-28UNF) / Kit.” These are listed separately to avoid confusion with individual CHF valve models.
Selection Highlights
The current range clearly covers 10-32, 1/4-28, and 5/16-24, allowing selection to begin with the instrument or tubing port.
Multiple interface groups include separate inlet and outlet valves; verify both the connection and required flow direction.
Current model descriptions explicitly distinguish diaphragm and spring-loaded structures, supporting direct matching to the original valve design.
Individual valve models and kit purchase items are listed separately for maintenance, replacement, and system-level purchasing.
Quick Selection Filter
Combine interface, flow direction, and valve structure to narrow the available CHF options.
| No. | Model / Specification | Interface | Flow Direction | Structure | Purchase Type | Selection Note |
|---|---|---|---|---|---|---|
| 01 | CHF-214BE | Interface not specified in the current name | Two-Port | Standard Check Valve | Individual Models | Two-Port Check Valve |
| 02 | CHF-418BC | 1/4-28 | Outlet | Standard Check Valve | Individual Models | 1/4-28 Outlet Check Valve |
| 03 | CHF-418BR | 1/4-28 | Inlet | Standard Check Valve | Individual Models | 1/4-28 Inlet Check Valve |
| 04 | CHF-516BC | 5/16-24 | Outlet | Standard Check Valve | Individual Models | 5/16-24 Outlet Check Valve |
| 05 | CHF-516BR | 5/16-24 | Inlet | Standard Check Valve | Individual Models | 5/16-24 Inlet Check Valve |
| 06 | CHF-1032MC | 10-32 | Outlet | Diaphragm | Individual Models | 10-32 Diaphragm Outlet Check Valve |
| 07 | CHF-1032MR | 10-32 | Inlet | Diaphragm | Individual Models | 10-32 Diaphragm Inlet Check Valve |
| 08 | CHF-1032TBC | 10-32 | Outlet | Spring-Loaded | Individual Models | 10-32 Spring-Loaded Outlet Check Valve |
| 09 | CHF-1032TBR | 10-32 | Inlet | Spring-Loaded | Individual Models | 10-32 Spring-Loaded Inlet Check Valve |
| 10 | CHF-1428MC | 1/4-28 | Outlet | Diaphragm | Individual Models | 1/4-28 Diaphragm Outlet Check Valve |
| 11 | CHF-1428MR | 1/4-28 | Inlet | Diaphragm | Individual Models | 1/4-28 Diaphragm Inlet Check Valve |
| 12 | CHF-1428TBC | 1/4-28 | Outlet | Spring-Loaded | Individual Models | 1/4-28 Spring-Loaded Outlet Check Valve |
| 13 | CHF-1428TBR | 1/4-28 | Inlet | Spring-Loaded | Individual Models | 1/4-28 Spring-Loaded Inlet Check Valve |
| 14 | Two-Port Check Valve / Kit | Confirm as Kit | Kits | Kit Configuration | Kit Purchase Items | Two-Port Check Valve Kit |
| 15 | Shutoff Valve (1/4-28UNF) / Kit | 1/4-28UNF | Kits | Shutoff Valve Kit | Kit Purchase Item in the Same Source Table | Identify separately from individual CHF check-valve models |
Model Specification Comparison
All model, interface, flow-direction, and structure descriptors from the source are retained. Technical performance parameters not provided in the source are not inferred.
| No. | Model | Current Specification Name | Interface | Flow Direction | Structure | Type |
|---|---|---|---|---|---|---|
| 01 | CHF-214BE | Two-Port Check Valve | Not specified | Two-Port | Standard Check Valve | Individual Models |
| 02 | CHF-418BC | 1/4-28 Outlet Check Valve | 1/4-28 | Outlet | Standard | Individual Models |
| 03 | CHF-418BR | 1/4-28 Inlet Check Valve | 1/4-28 | Inlet | Standard | Individual Models |
| 04 | CHF-516BC | 5/16-24 Outlet Check Valve | 5/16-24 | Outlet | Standard | Individual Models |
| 05 | CHF-516BR | 5/16-24 Inlet Check Valve | 5/16-24 | Inlet | Standard | Individual Models |
| 06 | CHF-1032MC | 10-32 Diaphragm Outlet Check Valve | 10-32 | Outlet | Diaphragm | Individual Models |
| 07 | CHF-1032MR | 10-32 Diaphragm Inlet Check Valve | 10-32 | Inlet | Diaphragm | Individual Models |
| 08 | CHF-1032TBC | 10-32 Spring-Loaded Outlet Check Valve | 10-32 | Outlet | Spring-Loaded | Individual Models |
| 09 | CHF-1032TBR | 10-32 Spring-Loaded Inlet Check Valve | 10-32 | Inlet | Spring-Loaded | Individual Models |
| 10 | CHF-1428MC | 1/4-28 Diaphragm Outlet Check Valve | 1/4-28 | Outlet | Diaphragm | Individual Models |
| 11 | CHF-1428MR | 1/4-28 Diaphragm Inlet Check Valve | 1/4-28 | Inlet | Diaphragm | Individual Models |
| 12 | CHF-1428TBC | 1/4-28 Spring-Loaded Outlet Check Valve | 1/4-28 | Outlet | Spring-Loaded | Individual Models |
| 13 | CHF-1428TBR | 1/4-28 Spring-Loaded Inlet Check Valve | 1/4-28 | Inlet | Spring-Loaded | Individual Models |
| 14 | Two-Port Check Valve / Kit | Two-Port Check Valve / Kit | Confirm as Kit | Kits | Kit Configuration | Kit Purchase Items |
| 15 | Shutoff Valve (1/4-28UNF) / Kit | Shutoff Valve (1/4-28UNF) / Kit | 1/4-28UNF | Kits | Shutoff Valve | Kit Purchase Item in the Same Source Table |
Interface, Flow Direction & Structure Guide
The current 10-32 group includes diaphragm inlet/outlet and spring-loaded inlet/outlet versions, for four clearly identified models.
The 1/4-28 group currently includes standard, diaphragm, and spring-loaded structures, with separate inlet and outlet versions.
The current 5/16-24 group includes CHF-516BC outlet and CHF-516BR inlet as two separate models.
CHF-214BE is separately identified as a two-port check valve, and the source also includes a two-port check-valve kit purchase item.
Recommended Selection Sequence
First determine whether the equipment interface is 10-32, 1/4-28, or 5/16-24.
Most CHF model names explicitly identify whether the valve is an inlet or outlet version.
Determine whether the original component uses a standard, diaphragm, or spring-loaded structure.
After interface, flow direction, and structure are confirmed, use the complete CHF model code for final verification.
Typical Applications
Select the matching CHF model according to the existing interface, flow direction, and original valve structure.
10-32, 1/4-28, and 5/16-24 options can be matched progressively to instrument ports.
When the original model is known, verify the replacement directly by the complete CHF code.
The current source also includes a two-port check-valve kit and a 1/4-28UNF shutoff-valve kit.
FAQ
How many individual CHF models are currently listed?
The current source includes 13 individual CHF models plus 2 kit purchase items.
Which models use the 10-32 interface?
The current 10-32 models are CHF-1032MC, CHF-1032MR, CHF-1032TBC, and CHF-1032TBR.
Which valve types are available with 1/4-28?
The current 1/4-28 range includes CHF-418BC/BR standard inlet/outlet check valves, CHF-1428MC/MR diaphragm models, and CHF-1428TBC/TBR spring-loaded models.
How are diaphragm and spring-loaded models distinguished?
The current specification names explicitly identify “Diaphragm” or “Spring-Loaded.” Match the replacement to the valve structure used in the existing equipment.
What do BC and BR mean?
The source data does not define the meaning of the model letters. This page only follows the supplied names, which identify BC products as outlet versions and BR products as inlet versions.
Why are cracking pressure and pressure rating not shown?
The supplied specification data does not provide cracking pressure, pressure rating, material, or operating temperature, so these values are not added without confirmation.
Does an empty filter result mean the selector is not working?
No. If the selected interface + flow direction + structure combination is not present in the current specification data, the table will correctly show no matching model.
Purchase & Technical Support
Standard CHF models can be selected by interface thread, inlet/outlet direction, and diaphragm or spring-loaded structure. If the exact model is uncertain, provide a photo of the original valve, its model number, interface thread, flow direction, installation position, and required quantity for further verification.
