HASKEL / Product familyProduct catalogues and documents ↓
Valves and control components
Haskel Valves
Supplementary valves and controls for pressure systems: backflow prevention, pressure sensing with a pneumatic signal, and directional control or pressure release. Each component has its own function and service conditions.
01Stainless-steel check valves with integral seat, depending on model
02Pressure switches with pneumatic output
03External, internal or remote pneumatic adjustment options
04Air-operated directional and relief valves
The model will be added to your request. The B.N. team will check its suitability for your operating conditions.
HASKEL / TECHNICAL PRODUCT VIEW
APPLICATION & DESIGN
Understand the application.
Applications
- Start/stop control of pumps and boosters
- Flow-direction isolation in a pressure system
- Pneumatic actuation and pressure release
- Integration of pressure alarms into a control circuit
Product features
- Stainless-steel check valves with integral seat, depending on model
- Pressure switches with pneumatic output
- External, internal or remote pneumatic adjustment options
- Air-operated directional and relief valves
TECHNICAL DATA
Data with a source.
| Parameter | Value and reference conditions |
|---|---|
| Air Pilot switches — output signal | Up to 150 psi; sensing pressure is a separate parameter Source ↗ |
| 28201 check valve | 1/4 inch NPT; Cv 0.44; up to 15,000 psi for liquid or 10,000 psi for gas, according to the manufacturer table Source ↗ |
| 28303 check valve | 1/2 inch NPT; Cv 2.10; up to 15,000 psi for liquid or 10,000 psi for gas, according to the manufacturer table Source ↗ |
| Oxygen-service check valve version | Suffix -10; up to 5,000 psi according to the manufacturer's note Source ↗ |
Model data are identified examples from the manufacturer table. Gas ratings are not necessarily liquid ratings; oxygen service requires a dedicated version. Check service temperature and full code.
DOCUMENTS & SOURCES
Professional information. Within reach.
HASKEL — product family overviewEnglish · PDF · 4 Pages · 1.8 MB · Opens in a new tabValves and control components — manufacturer informationEnglish · Manufacturer page · Opens in a new tabValves and system components — PDF catalogueOpens in a new tabCheck valves — dimensions and model tableOpens in a new tabAir Pilot — selection tablesOpens in a new tab
More documents in the information centre ←Sources checked: 2026-10-26. Check the revision and configuration when ordering.
MODELS & CONFIGURATIONS
Select a model. Explore the details.
| Model / series | Features |
|---|---|
| Stainless Steel Check Valves | Check valves; liquid and gas ratings differ on some models |
| Air Pilot Switch — Style A | External adjustment |
| Air Pilot Switch — Style B | Remote pneumatic adjustment |
| Air Pilot Switch — Style C | Internal adjustment |
| Directional Control & Release Valves | Air-operated directional and release valves |
YOUR APPLICATION
Your data. Our selection.
- Required function and circuit diagram
- Operating, sensing or cracking pressure — according to component function
- Gas or liquid, temperature and construction materials
- Connections, flow and Cv
- Normally open or closed state, command signal and required adjustment
You may attach a specification, drawing or nameplate photo. The site assistant can help organize the data.