Description
A WaterMark-certified 70 PSI pressure limiting valve that protects whole house filters, RO systems, and plumbing fixtures from high water pressure — ships with two 3/4″-to-1″ adapters so it installs on both 3/4″ and 1″ lines.
What it does
Municipal water pressure commonly arrives between 40 and 80+ PSI, and pressure spikes (water hammer, thermal expansion, supply surges) can push well beyond that. Most whole house filter housings are rated for 80–100 PSI max — prolonged over-pressure causes cracks, leaks, and O-ring failure. This pressure limiting valve installs upstream of your filtration system and mechanically caps pressure at 70 PSI (500 kPa), protecting everything downstream.
Manufactured by Clean Pure (Taiwan), WaterMark certified. It’s a passive, inline device — no electricity, no adjustment, no maintenance. Install it once between the shut-off and your first housing, and it works quietly from there.
What’s in the box
- ✓70 PSI pressure limiting valve with 3/4″ MNPT connections
- ✓2 × adapter bushings (3/4″ to 1″) — thread onto both ends to install on a 1″ line
Fits 3/4″ lines directly. For 1″ lines, thread the included adapters onto both ends of the valve — no additional parts needed.
Key benefits
- ✓Caps pressure at 70 PSI — protects housings, fittings, membranes & O-rings from over-pressure
- ✓Fits both 3/4″ and 1″ lines — adapters included, no extra parts
- ✓WaterMark certified (Lic. 23133) — tested to plumbing standards
- ✓Handles surges up to 230 PSI (1600 kPa max incoming)
- ✓Passive / install-and-forget — no electricity, no adjustment, no maintenance
- ✓Made in Taiwan by Clean Pure
Specifications
| Part type |
Pressure limiting valve (inline) |
| Pressure limit |
70 PSI (500 kPa) |
| Native connection |
3/4″ MNPT (both ends) |
| Included adapters |
2 × 3/4″ to 1″ bushing adapters |
| Fits |
3/4″ lines (direct) & 1″ lines (with adapters) |
| Flow rate |
38 L/min (10 GPM) @ 7 PSI | 52 L/min (13.7 GPM) @ 14.2 PSI |
| Max incoming pressure |
1600 kPa (230 PSI) |
| Max temperature |
40°C (104°F) — cold water only |
| Certification |
WaterMark (Lic. 23133) |
| Manufacturer |
Clean Pure (Taiwan) |
| Model |
LV-FPV-0304-70 |
| Brand |
MyWaterClub |
When to use a pressure limiter
- Your water pressure is above 70 PSI — most filter housings are rated 80–100 PSI max; prolonged over-pressure causes cracks, leaks, and O-ring failure.
- You experience water hammer or pressure surges — transient spikes can exceed static pressure by 2–3×.
- You’re protecting an RO membrane or inline fittings — quick-connect fittings and RO housings are particularly vulnerable to over-pressure.
- Your housing O-rings or gaskets fail prematurely — often a sign of excessive line pressure.
Installation
- Install upstream (before) your filter system — between the shut-off valve and the first housing.
- 3/4″ line: thread the valve directly into your plumbing (both ends are 3/4″ MNPT).
- 1″ line: thread the included 3/4″-to-1″ adapters onto both ends of the valve first, then install.
- Use PTFE tape on all threaded connections.
- Cold water only (max 104°F / 40°C).
- No maintenance required — passive mechanical device.
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Please note: This is a fixed 70 PSI limiting valve, not an adjustable regulator — it cannot be adjusted to a different pressure. It limits pressure that exceeds 70 PSI; it does not boost low pressure. Cold water only (max 104°F). Use PTFE tape on all threaded connections. WaterMark certification (Australia/NZ standard) confirms quality manufacturing and testing.
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