16″ 600LB Pilot Operated Self-acting Pressure Reducing Valve for NG service
Description
TECHNICAL DATA SHEET
16″ 600LB Pilot Operated Self-acting Pressure Reducing Valve
GENERAL DESCRIPTION
The 16-inch Class 600 pilot-operated, self-acting pressure reducing valve is designed to reduce a higher, fluctuating inlet pressure to a constant, adjustable downstream pressure without any external power source. The pilot control system ensures high accuracy and stable regulation across a wide range of flow rates. The main valve is operated by the medium itself, responding to the pilot signal through an external sensing line.
TECHNICAL SPECIFICATIONS
| Parameter | Value / Description |
|---|---|
| Product Type | Pilot Operated Self-acting Pressure Reducing Valve |
| Nominal Size | 16 inch (DN 400) |
| Pressure Rating | ASME Class 600 (PN 100) |
| End Connection | Raised Face (RF) or Ring Type Joint (RTJ) flanges per ASME B16.5 |
| Operation | Self-actuated, spring-loaded pilot control |
| Applicable Standards | Body Design: ASME B16.34 / EN 12516 Face-to-Face: Manufacturer’s Standard Testing: API 598 / EN 12266-1 |
OPERATING PARAMETERS
| Parameter | Specification |
|---|---|
| Maximum Inlet Pressure | 99 bar g (1435 psig) at 38°C (100°F) – for WCB body |
| Minimum Inlet Pressure | ≥ 1.5 × desired outlet set pressure (to ensure stable pilot operation) |
| Outlet Pressure Adjustment Ranges | (Selectable by pilot spring) • Range 1: 0.5 – 3 bar (7 – 43 psi) • Range 2: 2 – 8 bar (29 – 116 psi) • Range 3: 7 – 16 bar (101 – 232 psi) • Range 4: 15 – 40 bar (217 – 580 psi) • Range 5: 30 – 55 bar (435 – 798 psi) (consult factory) |
| Maximum Allowable Differential Pressure (ΔP) | 80 bar (1160 psi) |
| Regulation Accuracy | ±2.5% of set point (pilot controlled) |
| Shut-off Leakage Class | ANSI/FCI 70-2 Class VI (bubble-tight) standard; Class IV (metal-seated) optional |
| Temperature Range | Standard (stainless steel diaphragm): -29°C to 425°C (-20°F to 800°F) Soft goods (EPDM/FKM): 0°C to 150°C (32°F to 300°F) |
| Suitable Media | Steam, compressed air, inert gases, water, and light oils (compatibility to be verified with wetted materials) |
MATERIALS OF CONSTRUCTION
| Component | Standard Material | Optional Material |
|---|---|---|
| Main Valve Body | ASTM A216 WCB (Carbon Steel) | ASTM A217 WC6 / A351 CF8M |
| Main Valve Bonnet | ASTM A216 WCB | ASTM A217 WC6 |
| Main Valve Seat | ASTM A276 420 Stainless Steel, hardened | 316 SS with Stellite overlay |
| Main Valve Plug | ASTM A276 316 Stainless Steel | 17-4 PH Stainless Steel |
| Stem | 17-4 PH Stainless Steel | – |
| Pilot Body / Internals | ASTM A479 316 Stainless Steel | – |
| Pilot Diaphragm | Stainless Steel 316L (multilayer) | Reinforced EPDM / FKM |
| Main Valve Spring | Alloy Steel | Stainless Steel |
| Sensing Line & Filter | Stainless Steel 304 | – |
| Gaskets / Packing | Graphite / PTFE (application dependent) | – |
FLOW CAPACITY
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Rated Cv (Fully Open): Approx. 10,200
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Note: Actual controlled flow depends on the specific inlet pressure, outlet set point, and media. A complete set of flow curves (Kv / Cv) versus valve opening is available on request.
DIMENSIONS & WEIGHT
| Dimension | Approximate Value |
|---|---|
| Face-to-Face Length (L) | 1,250 mm (49.2 inches) |
| Overall Height (H) | ~ 1,850 mm from centerline to pilot top |
| Flange Outer Diameter (16” CL600) | 648 mm (25.5 inches) |
| Net Weight | 1,650 kg (3,638 lbs) |
| Consult certified outline drawing for exact dimensions prior to installation. |
STANDARD FEATURES
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High Accuracy & Stability: Pilot operation maintains a flat downstream pressure curve even with wide inlet pressure fluctuations.
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External Sensing Line: Senses pressure downstream of the valve, enabling more accurate regulation. Includes an integral strainer to protect the pilot.
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Tight Shut-off: Soft-seated main valve construction achieves bubble-tight shut-off under no-flow conditions.
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Easy Maintenance: Top-entry body design allows access to all internal trim parts without removing the valve body from the pipeline.
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Available Options (on request): Manual override handwheel, remote set-point adjustment, travel indicator, NACE MR0175 compliance, oxygen cleaning.
HOW TO ORDER / INQUIRY DATA
To specify or request a quotation, please provide the following information:
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Nominal Size & Pressure Class: 16″ 600LB
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Fluid & Operating Temperature
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Inlet Pressure: Minimum, Normal, Maximum
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Required Outlet Pressure: Set point
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Flow Rate: Minimum, Normal, Maximum
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End Connection Type: Flange face (RF/RTJ) and standard (ASME)
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Material Certifications / Special Requirements
Disclaimer: All specifications are subject to change without prior notice. For critical applications, always refer to the certified manufacturing drawings and final test certificates.
