Description
Watson McDaniel HSP & HSP-SS Series — Pilot-Operated Pressure Regulators (Includes Pressure Pilot)
The HSP Series Pilot-Operated Regulating Valve is designed for reducing pressure in steam systems with high accuracy and reliability. These regulators include a Pressure Pilot for precise control and faster response compared to direct-operated regulators. The HSP-SS Series offers the same performance with all-wetted parts in 316 stainless steel for superior corrosion resistance.
Product Overview
- Used for steam pressure reduction in process and distribution systems
- Includes integral Pressure Pilot for improved regulation accuracy
- Available in both Cast Steel (HSP) and Stainless Steel (HSP-SS) body materials
- Wide range of pressure adjustments and body sizes
- HSP-SS recommended for clean steam and corrosive applications
Technical Specifications
- Maximum Operating Pressure: 450 PSIG
- Body Material: HSP — Cast Steel A216 WCB; HSP-SS — CF8M 316SS
- Valve Disc & Seat: 420 Stainless Steel
- External Tubing: Stainless Steel
Available Models
| Size / Connection | Model Code | Reduced Pressure Range (PSIG) | Weight (lb) |
|---|---|---|---|
| 1″ 150# FLG | HSP-14-F150-Y / B / R | 10–40 / 25–100 / 75–300 | 36 |
| 1″ 300# FLG | HSP-14-F300-Y / B / R | 10–40 / 25–100 / 75–300 | 38 |
| 1½″ 150# FLG | HSP-16-F150-Y / B / R | 10–40 / 25–100 / 75–300 | 60 |
| 1½″ 300# FLG | HSP-16-F300-Y / B / R | 10–40 / 25–100 / 75–300 | 64 |
| 2″ 150# FLG | HSP-17-F150-Y / B / R | 10–40 / 25–100 / 75–300 | 87 |
| 2″ 300# FLG | HSP-17-F300-Y / B / R | 10–40 / 25–100 / 75–300 | 90 |
| 3″ 150# FLG | HSP-19-F150-Y / B / R | 10–40 / 25–100 / 75–300 | 170 |
| 3″ 300# FLG | HSP-19-F300-Y / B / R | 10–40 / 25–100 / 75–300 | 175 |
| 4″ 150# FLG | HSP-20-F150-Y / B / R | 10–40 / 25–100 / 75–300 | 255 |
| 4″ 300# FLG | HSP-20-F300-Y / B / R | 10–40 / 25–100 / 75–300 | 265 |
Options & Adders
- Reduced Port Valve: Add 5%
- Stellite Trim: Add 10%
- Low-Pressure Main Valve (5–20 PSIG): Add $180 (1″–2″ sizes)
- Stainless Steel Diaphragm: Add 5%
- Pilot Only: HSP — $1,412; HSP-SS — $1,920
- Special Adapter (HSP-ADAPTER): $510
Note: The HSP-SS Series is identical to HSP except for 316SS body material. Pilot options other than Pressure Reducing are available upon request.