Stainless Steel Gate Valve – Threaded PT, Rising Stem, 316 CF8M, 200 WOG, 1/2″–2″

وصف المنتج

The J41W-200R is a threaded stainless steel gate valve in cast 316 (ASTM A351 CF8M), rated 200 WOG (200 psi), sizes 1/2″ to 2″ with female PT (taper pipe) threads. Turning the handwheel raises or lowers a solid wedge gate — when fully open the gate clears the bore completely, so flow is unrestricted and pressure drop is near zero.

A gate valve is the right choice where a valve stays fully open or fully closed for long periods and a clear, full bore matters — unlike a ball valve, the multi-turn handwheel closes slowly, which avoids the water hammer a fast quarter-turn can cause. Body, cap, disc and stem are 316 stainless with a PTFE gasket and V-ring packing, tested to API 598 and designed to ANSI B16.34.

المواصفات الفنية الرئيسية

المزايا والفوائد

• Full clear bore: the gate lifts completely out of the flow path, so an open valve adds almost no pressure drop.
• No water hammer: the multi-turn handwheel closes slowly, avoiding the pressure surge a fast-closing valve can cause on long liquid lines.
• 316 stainless throughout: CF8M body and 316 stem resist corrosion in water, marine and chemical service.
• API 598 tested: every valve is shell- and seat-tested before shipment.

التطبيقات

• Domestic water risers and floor branches, 2″ and under — isolation points that stay open for years.
• Pump suction and discharge block valves — the full bore keeps suction losses low.
• General utility branch shutoff — hot and cold water, gas and other plant services.
• Irrigation and agricultural water — pump station outlets and zone isolation.
• Plant and facility utility piping — process and utility branch lines, not main transmission.
• Marine and shipboard utility piping — freshwater, fuel and air lines with screwed ends.
• Water and wastewater plants — small-bore utility, backwash and drain branches.
• On/off service only — a gate valve is not for throttling; it is either fully open or fully closed.

For quarter-turn shutoff on the same lines, see the one-piece ball valve; for the difference between the two, read Ball Valve vs Gate Valve.

الأسئلة الشائعة

Gate valve or ball valve — which should I use? A gate valve gives a fully clear bore and closes slowly with a multi-turn handwheel, so it avoids water hammer — best where the valve stays open or closed for long periods. A ball valve is a fast quarter-turn on/off. For threaded ball valves, see our stainless steel valve range.

What size and pressure is it? Sizes 1/2″ to 2″ (DN15–DN50), rated 200 WOG (200 psi). Body and disc are cast 316 stainless (CF8M).

Which thread does it use? Female PT (taper pipe) threads are in stock, sizes 1/2″–2″; NPT and PF can be made to order — tell us which standard your piping uses when you request a quote.

ما هي درجة حرارة التشغيل؟ -20 °C to +80 °C, with the PTFE packing and gasket setting the practical limit.

Is it tested? Yes — designed to ANSI B16.34 and tested to API 598 (shell 2.0 MPa, seat 1.6 MPa) before shipment.

ما هو الحد الأدنى للطلب؟ لا يوجد حد أدنى لكمية الطلب — نحن نقبل الطلبات من أي حجم، بما في ذلك الطلبات التجريبية الصغيرة. بالنسبة للطلبات الصغيرة، يتولى المشتري ترتيب الشحن ودفع تكاليفه. يتم الدفع عن طريق التحويل المصرفي (T/T) — 30% عند تأكيد الطلب، و70% قبل الشحن.