SINOTRUK HOWO Hand Brake Valve WG9000360595 (Parking Brake Control, T5G / A7 / T7H / Sitrak C7H)

This is the driver’s parking brake control valve — the pull knob on the dash that applies and releases the spring brakes. Pull it up and the valve exhausts the air holding the spring brake chambers off, so the brakes clamp on; push it down and supply air returns, releasing them. The number on the Sinotruk label is **WG9000360595/1**, and it is the valve used across the HOWO T5G, A7, T7H and the Sitrak C5H / C7H / C9H (TX) cab.

The photo of the label on this page is the actual unit you will receive: Sinotruk green-strip label, barcode and serial, plus the small aluminium plate on the body with the same number.

**Specifications**

– OEM No.: WG9000360595/1 (catalogues quote it as WG9000360595)
– Product: hand brake valve / parking brake control valve
– Type: pull-to-apply, push-to-release dash valve with exhaust
– Mounting: dash / cabin, single fixing flange, knob on a threaded stem
– Body: die-cast aluminium, black dome cap, black knob
– Ports: supply, delivery to the park brake circuit, exhaust (see the bottom face in the photos)
– Condition: new, supplied as pictured

**Check before you order**

1. **The number on your old valve.** WG9000360595/1 must appear on the label or the body plate. Several Sinotruk hand valves look identical from the knob end and are not interchangeable.
2. **The port pattern.** Compare the bottom face in the photos — supply, delivery and exhaust are in fixed positions on this casting.
3. **The switch, if your truck has one.** Some cabs use this valve with a park brake switch for the warning lamp and the door/buzzer logic; if yours has a connector on the body, tell us and we will match it.

Send a photo of your old valve plus the cab model and we confirm before you order.

**How they fail**

The internal seals take the full supply pressure every time the knob moves, so wear shows up as: air hissing at the knob when it is pulled, a knob that will not stay down (the truck will not roll when you release it), a park brake that will not hold on an incline, or the red parking indicator staying on with the knob released. In cold weather a worn valve can also stick, which reads as a “frozen brake” complaint. If the valve leaks only when the knob is up, the valve is the problem; if it leaks with the knob down as well, check the park brake relay valve and the chambers too.

**Fitting notes**

1. Park on level ground, chock the wheels, and drain the air system before opening any line.
2. Mark the lines before removal — supply and delivery are easy to swap on a first fitting.
3. Fit the knob so the stem has full travel without rubbing the dash panel; the valve must reach both end stops.
4. Pressurise, then leak-test the body joints, the knob stem and both line fittings with leak detector.
5. Check the function both ways: knob up holds the truck, knob down releases it fully, and the warning lamp behaves as it should.

**Related parts**

– Park brake relay valve, spring brake chambers and the dual-circuit park valve: tell us your cab model and VIN and we quote the set together.
– Brake valves and air system parts: we supply the full circuit, not just the one valve.

**Ordering**

Minimum order 1 piece. Stock items leave within 2–3 working days; we send photos of the actual valve and the packing before shipment, then the tracking number. Air express for urgent orders, sea or rail for bulk.

Who Is This Part For?