Steam Equipment – HSP-SS Series Pilot-Operated P
Price range: $1,480.84 through $23,920.53
Steam pressure control, reducing stations, and clean steam systems Available Models Size / Connection Model Code (DLDI) Model Code (DLCS) Model Code (DLSS) Weight (lb) 1/2″ NPT DLDL-12-N – – 24 3/4″ NPT DLDL-13-N – – 24 1″ NPT DLDL-14-N – – 30 1″ 150# FLG DLDL-14-F150 DLCS-14-F150 DLSS-14-F150 31 1″ 300# FLG DLDL-14-F300 DLCS-14-F300 DLSS-14-F300 32 1¼″ NPT DLDL-15-N – – 50 1½″ NPT DLDL-16-N – – 51 1½″ 150# FLG DLDL-16-F150 DLCS-16-F150 DLSS-16-F150 60 1½″ 300# FLG DLDL-16-F300 DLCS-16-F300 DLSS-16-F300 64 2″ NPT DLDL-17-N – – 90 2″ 150# FLG DLDL-17-F150 DLCS-17-F150 DLSS-17-F150 87 2″ 300# FLG DLDL-17-F300 DLCS-17-F300 DLSS-17-F300 90 2½″ 150# FLG DLDL-18-F150 – – 105 2½″ 300# FLG DLDL-18-F300 – – 107 3″ 150# FLG DLDL-19-F150 DLCS-19-F150 DLSS-19-F150 170 3″ 300# FLG DLDL-19-F300 DLCS-19-F300 DLSS-19-F300 175 4″ 150# FLG DLDL-20-F150 DLCS-20-F150 DLSS-20-F150 230 4″ 300# FLG DLDL-20-F300 DLCS-20-F300 DLSS-20-F300 250 Features & Benefits Allows remote pressure adjustment using air supply regulators or PL control panels High-accuracy dome-loaded operation ensures stable downstream pressure Available in ductile iron (DLDI), carbon steel (DLCS), or stainless steel (DLSS) Compact and reliable design minimizes maintenance requirements Note: The DL Series Dome-Loaded Regulators are used with external air control panels (PL1, PL2, or PL3) for pressure adjustment.
DL Series — Dome-Loaded Pressure Regulators
The DL Series Dome-Loaded Regulators are designed for precise steam pressure control in industrial and process steam systems. Unlike spring-loaded regulators, these valves use a pressure dome adjusted by air or gas pressure, allowing smooth and accurate control of downstream steam pressure. Ideal for installations requiring remote adjustment or reduced maintenance.
Product Overview
- Maintains constant downstream pressure using a dome-loaded control mechanism
- Allows remote pressure adjustment via air supply (using control panels PL1, PL2, or PL3)
- Available in ductile iron, carbon steel, or stainless steel construction
- Compact design with high capacity and quick response
Technical Specifications
| Body Material (DLDI) | Ductile Iron |
| Body Material (DLCS) | Carbon Steel |
| Body Material (DLSS) | Stainless Steel |
| Maximum Operating Pressure | 450 PSIG |
| Connection Types | NPT or ANSI Flanged (150# and 300#) |
| Adjustment | Dome-loaded via external air regulator or control panel |
| Applications | Steam pressure control, reducing stations, clean steam systems |
Available Models
| Size / Connection | DLDI | DLCS | DLSS | Weight (lb) |
|---|---|---|---|---|
| 1/2" NPT | DLDL-12-N | – | – | 24 |
| 3/4" NPT | DLDL-13-N | – | – | 24 |
| 1" NPT | DLDL-14-N | – | – | 30 |
| 1" 150# FLG | DLDL-14-F150 | DLCS-14-F150 | DLSS-14-F150 | 31 |
| 1" 300# FLG | DLDL-14-F300 | DLCS-14-F300 | DLSS-14-F300 | 32 |
| 1-1/4" NPT | DLDL-15-N | – | – | 50 |
| 1-1/2" NPT | DLDL-16-N | – | – | 51 |
| 1-1/2" 150# FLG | DLDL-16-F150 | DLCS-16-F150 | DLSS-16-F150 | 60 |
| 1-1/2" 300# FLG | DLDL-16-F300 | DLCS-16-F300 | DLSS-16-F300 | 64 |
| 2" NPT | DLDL-17-N | – | – | 90 |
| 2" 150# FLG | DLDL-17-F150 | DLCS-17-F150 | DLSS-17-F150 | 87 |
| 2" 300# FLG | DLDL-17-F300 | DLCS-17-F300 | DLSS-17-F300 | 90 |
| 2-1/2" 150# FLG | DLDL-18-F150 | – | – | 105 |
| 2-1/2" 300# FLG | DLDL-18-F300 | – | – | 107 |
| 3" 150# FLG | DLDL-19-F150 | DLCS-19-F150 | DLSS-19-F150 | 170 |
| 3" 300# FLG | DLDL-19-F300 | DLCS-19-F300 | DLSS-19-F300 | 175 |
| 4" 150# FLG | DLDL-20-F150 | DLCS-20-F150 | DLSS-20-F150 | 230 |
| 4" 300# FLG | DLDL-20-F300 | DLCS-20-F300 | DLSS-20-F300 | 250 |
Features & Benefits
- Allows remote pressure adjustment using air supply regulators or PL control panels
- High-accuracy dome-loaded operation ensures stable downstream pressure
- Available in ductile iron (DLDI), carbon steel (DLCS), or stainless steel (DLSS)
- Compact and reliable design minimizes maintenance requirements
Note: The DL Series Dome-Loaded Regulators are used with external air control panels (PL1, PL2, or PL3) for pressure adjustment. Not standalone control valves.
| Weight | N/A |
|---|---|
| Brand | Watson McDaniel |
| Size & Connection | DLCS Series Dome-Loaded Regulator by, DLDI Series Dome-Loaded Regulator by, DLSS Series Dome-Loaded Regulator by, HSP Series Pilot-Operated Pressure Regulator 1in Inch 150#FLG, HSP Series Pilot-Operated Pressure Regulator 1in Inch 300#FLG, HSP Series Pilot-Operated Pressure Regulator 2in Inch 150#FLG, HSP Series Pilot-Operated Pressure Regulator 2in Inch 300#FLG, HSP Series Pilot-Operated Pressure Regulator 3in Inch 150#FLG, HSP Series Pilot-Operated Pressure Regulator 3in Inch 300#FLG, HSP Series Pilot-Operated Pressure Regulator 4in Inch 150#FLG, HSP Series Pilot-Operated Pressure Regulator 4in Inch 300#FLG, HSP-SS Series Pilot-Operated Pressure Regulator- 1¹ᐟ²Inch 150#FlG, HSP-SS Series Pilot-Operated Pressure Regulator-1 Inch 300#FLG, HSP-SS Series Pilot-Operated Pressure Regulator-2 Inch 150#FLG, HSP-SS Series Pilot-Operated Pressure Regulator-2 Inch 300#FLG, HSP-SS Series Pilot-Operated Pressure Regulator-3 Inch 150#FLG, HSP-SS Series Pilot-Operated Pressure Regulator-3 Inch 300#FLG |
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