APV / SPX Hygienic Valves
APV DELTA RG4 – Hygienic Regulating Valve
APV DELTA RG4 – Hygienic Regulating Valve
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Product Type: Regulating Valve
Description:
The APV DELTA RG4 is a high-performance hygienic regulating valve developed for accurate and continuous control of flow and pressure in sanitary processes. Designed for demanding environments such as the dairy, food, brewery, and pharmaceutical industries, this valve offers precise modulation of liquids and gases across various process conditions.
With its compact, ball-shaped housing and advanced diaphragm actuator design, the DELTA RG4 ensures smooth product flow, exceptional hygiene, and compatibility with modern automation standards.
Key Features and Benefits
Gentle Product Handling: Ball-shaped valve housing prevents sump or dome formation, ensuring smooth, crevice-free internal flow and protecting product integrity.
Hygienic Design: Fully CIP/SIP cleanable; crevice-free sealing with approved APV profile seals eliminates contamination risk.
Excellent Control Precision: Offers a correction ratio of 50:1, supporting both linear and equal percentage characteristics.
Flexible Positioning Options: Can be equipped with integrated positioner or external positioner (e.g., NAMUR standard).
Smart Control: Optional communication via HART and Profibus protocols.
Robust Sealing: PTFE diaphragm, stainless steel bellows, or steam barrier available for aseptic applications.
Leakage Protection: Soft-seat stem seal achieves leakage class 6 (DIN IEC 534) without additional shut-off devices.
Process Integration: Compatible with T- and LL-housings for mixing/divert applications, mating flanges or weld-in installation.
Technical Characteristics
Actuation: Diaphragm actuator with positioner
Reversible function: spring-raising or spring-lowering
Optional electric or pneumatic actuation
Standard pneumatic control signal: 3–15 psi (0.2–1.0 bar)
Electro-pneumatic version: 4–20 mA
Control Independence: Valve stroke is controlled regardless of pressure, flow, or external disturbances.
Modular Design: Fully modular building block system – stem and seat can be replaced to match desired Cv/Kv values.
Sizes and Construction
| Sizes | DIN 25–150 and ISO 1″–4″ |
|---|---|
| Temperature | Up to 284°F / 140°C (continuous) |
| Nominal Pressure | PN 25 (363 psi) for DN 25–65 PN 16 (232 psi) for DN 80–100 PN 10 (145 psi) for DN 125–150 |
| Product-Wetted Parts | 1.4404 (AISI 316L) |
| Seal Materials | EPDM, FPM, HNBR, or Silicone (all FDA compliant) |
| Surface Finish | Internal polished Ra < 32μin (0.8 μm) |
Flow Value Options
CV and KV Combinations for different nominal widths (NW):
| NW (mm/inch) | CV Values (US) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.29* | 2.9 | 7.4 | 18.9 | 47.2 | 74.3 | 118 | 189 | 295 | |
| 25/1″ | ✓ | ✓ | ✓ | ||||||
| 40/1.5″ | ✓ | ✓ | 18.9 | ||||||
| 65/2.5″ | ✓ | ✓ | |||||||
| 80/3″ | ✓ | ✓ | |||||||
| 100/4″ | ✓ | ✓ | |||||||
| 125 | ✓ | ✓ | |||||||
| 150 | ✓ | ✓ |
KV equivalents (EU): Similar values available for metric specifications (0.25 to 400); see original table for full combinations.
*Metallic seal versions available