HYDAC ERVE-08021-01-C-VS-3.4 Hydraulic Screw-in Relief Valve
The HYDAC ERVE-08021-01-C-VS-3.4 is a high-performance, direct-acting, poppet-type screw-in cartridge relief valve engineered for precise and reliable hydraulic pressure control. Designed for seamless manifold block installation, it features a robust black metal body with external threading and a perforated lower sleeve/cage structure for optimized fluid flow. To ensure exceptional, leak-free operation under demanding conditions, the valve is equipped with an advanced multi-stage sealing system, utilizing premium green O-rings and durable blue/grey backup rings. System pressure limits can be easily and accurately configured using the internal hexagonal socket located within the top hex head. This valve serves as a critical safety component, protecting industrial and mobile hydraulic systems from potentially damaging overpressure events.
Technical Specifications:
- Brand / Model: HYDAC / ERVE-08021-01-C-VS-3.4
- Valve Type: Direct-acting poppet-type relief valve
- Installation / Mounting: Screw-in cartridge valve (for manifold installation)
- Adjustment Mechanism: Top hexagonal head with internal hex socket
- Sealing Elements: Multi-stage (Green O-rings with blue/grey backup rings)

| Brand | HYDAC |
|---|---|
| Model | ERVE-08021-01-C-VS-3.4 |
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Shipping policy
If you are buying multiple items, please contact us before checking out so we can get you the best combined rate for shipping.
Our default shipping rate is $100, which is enough to cover the cost of most shipments, but it is not our expected shipping rate. Due to the varying weights and sizes of products and customer locations, please contact us with your location and the products you are interested in to get the best current shipping rates.
ENERAL DELIVERY INFORMATION
Orders will be processed and shipping during standard working hours (0830 – 1700 GMT+8) Monday to Friday (excluding Bank Holidays)
On rare occasions, your order may be handled and/or processed on a Saturday. However, we are unable to ship items on weekends, therefore any orders dealt with on the weekend will be send out the next following working day.
The cut-off point for orders to be shipped the same day is 14:00 – please contact us to confirm stock levels before placing your order
Any orders placed after the cut-off will ship the next working day assuming all parts are in stock and ready for dispatch.
All orders:
- must be paid for in full before any goods are dispatched
- require a signature upon delivery. Please ensure delivery can be made to an address where someone will be available to sign for the delivery
- are packaged with great care, ensuring your order and the contents it contains, makes it safely through the delivery network
HYDAC ERVE-08021-01-C-VS-3.4 Hydraulic Screw-in Relief Valve
Secure your hydraulic systems with the HYDAC ERVE-08021-01-C-VS-3.4 Screw-in Relief Valve. This direct-acting poppet cartridge valve delivers precise pressure control, featuring robust metal construction, advanced multi-stage sealing, and an easy-to-use hex socket adjustment for reliable manifold integration.

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