The HP 703 regulator is a chrome‑plated brass single‑stage pipeline regulator with a stainless steel diaphragm for laboratory gas applications.
The HP 703 is a chrome‑plated brass single‑stage pipeline regulator featuring a 302 stainless steel diaphragm, one‑piece encapsulated seat, PTFE Teflon seals and filter, and dual‑scale psi/bar gauges. It includes an external relief valve and a helium leak rate of 1 × 10⁻⁸ cc/sec, making it suitable for non‑corrosive gases, purging, pressure testing, and blanketing.
The regulator is offered in multiple delivery‑pressure configurations (0‑15 psi, 0‑50 psi, 0‑125 psi, 0‑250 psi) with various inlet and outlet fitting options. Technical data include a Cv of 0.17, pressure regulation range of 1.8 PSIG to 100 PSIG, weight of 2.92 lb, and dimensions listed in the specifications sheet.
| Diaphragm material | 302 stainless steel |
|---|---|
| Seat design | One‑piece encapsulated seat |
| Body material | Chrome plated brass |
| Gauge type | Dual scale psi/bar gauges |
| External relief valve | Standard |
| Helium leak rate | 1 × 10⁻⁸ cc/sec |
| Recommended gas purity | Grade 5.0 (99.999) |
| Weight | 2.92 lb |
| Pressure regulation range | 1.8 PSIG to 100 PSIG |
It is suitable for non‑corrosive gases, purging, pressure testing, and blanketing.
The regulator has an in‑board helium leak rate of 1 × 10⁻⁸ cc/sec.
The regulator is recommended for gas purity up to Grade 5.0 (99.999).