Woodward 8915-425

Digital guide

Product Name: 1907 Small Gas Valve (valve only) — Woodward part number 8915-425, belonging to the Woodward 1907 series of small gas metering valves.

Product Introduction: Supplied in “valve only” configuration, this valve is designed for fuel metering in small- and medium-sized gas turbines and industrial gas engines. It delivers reliable gas flow control in industrial power generation, mechanical drive, and CHP applications and is compatible with the full range of Woodward digital controls and actuators. The model corresponds to the SQ-2000-6000 series position sensor for high-accuracy valve position feedback.

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Detailed content

Technical Specifications:

Part Number: 8915-425
Manufacturer: Woodward
Series: 1907 Series
Equipment Type: Small Gas Valve / Gas Metering Valve
Configuration: Valve Only
Matching Sensor: SQ-2000-6000 series linear position sensor

Functional Features:

Precise gas flow metering supporting stable turbine operation across all operating conditions
Precision-machined metering port with stable flow characteristic curve
Compact structural design adapting to various installation space constraints
Standardized mechanical and electrical interfaces for easy system integration
Reliable and durable sealing system adapted for long-term continuous operation

Application Scenarios:

Small- and medium-sized gas turbine power generation units
Industrial combined heat and power systems
Gas engine set fuel control
Distributed energy and microgrid projects
Precise gas metering in industrial processes

Performance Parameters:

Working Medium: Natural gas, clean industrial gas
Gas Filtration Accuracy Requirement: 25 microns absolute
Working Pressure Range: Meets industrial gas system standard ratings
Flow Regulation Capability: Covers the full operating range of small turbines
Environmental Adaptability: Standard industrial ambient temperature range

Material Composition:

Valve Body: High-strength aluminum alloy or precision-cast stainless steel
Spool and Metering Components: Hardened wear-resistant alloy steel
Seals: Fluororubber (FKM) composite, gas-corrosion resistant
Fasteners: High-strength alloy steel with anti-corrosion treatment

Structural Features:

Precision metering port achieving accurate flow-to-opening relationship
Standard pipe connection interfaces for easy construction and installation
Precision-machined actuator mounting face ensuring assembly accuracy
Optimized internal flow passage design with low flow resistance
Whole structure vibration-validated to adapt to dynamic environments

Working Principle: Gas enters the valve body through the inlet, flows through the metering port, and then enters downstream combustion equipment.

Installation Requirements:

Before installation, confirm the compatibility of the actuator and controller paired with this valve
Use standard pipe connections per specification, ensuring clean sealing surfaces
Align the actuator mounting face precisely to maintain coaxiality
Correctly install the matching SQ-2000-6000 series position sensor to ensure closed-loop feedback accuracy
Provide upstream gas filtration no coarser than 25 microns absolute

Usage Precautions:

Maintain gas filtration at 25 micron absolute precision to prevent metering port blockage or wear
Do not exceed the rated pressure and standard industrial ambient temperature range
Regularly inspect seal integrity and sensor signal stability
During maintenance, protect the precision-machined metering port and actuator mounting surface from damage