Product Name
Manual Threaded Gate Valve – 316 Stainless Steel (CF8M), 200 WOG, GT Series
Product Summary
A threaded stainless steel gate valve in cast 316 (CF8M), rated 200 WOG (200 psi), sizes 1/2″–2″ with female PT (taper) threads. The multi-turn handwheel raises a solid gate clear of the bore — full flow when open, and slow closing that avoids water hammer. PTFE packing, -20 °C to +190 °C, designed to ANSI B16.34 and tested to API 598.
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ISO 9001 · CE · Manufacturer since 1999
Product Description
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.
Key Technical Specifications
| Type | Gate valve — threaded, rising-stem, multi-turn handwheel |
| Model | J41W-200R (GT Series) |
| Size range | 1/2″ – 2″ (DN15 – DN50) |
| Working pressure | 200 WOG (200 psi) |
| Body, cap, disc | ASTM A351 CF8M — the cast form of 316 stainless steel |
| Stem | ASTM A276 Gr. 316 |
| Gasket & packing | PTFE gasket, PTFE V-ring packing |
| End connection | Female PT (taper pipe) thread |
| Working temperature | -20 °C to +190 °C |
| Design / test | Design ANSI B16.34 · Test API 598 (shell 2.0 MPa / seat 1.6 MPa) |
| Media | Water, gas, oil |
Materials
Thirteen parts, matching the numbered labels 1–13 in the drawing below.
| No. | Part | Material |
|---|---|---|
| 1 | Disc | A351 CF8M |
| 2 | Body | A351 CF8M |
| 3 | Stem | A276 316 |
| 4 | Cap | A351 CF8M |
| 5 | Gasket | PTFE |
| 6 | Stop gasket | A276 304 |
| 7 | Washer | A276 304 |
| 8 | V-ring packing | PTFE |
| 9 | Gland | A276 304 |
| 10 | Cap nut | A351 CF8 |
| 11 | Handwheel | QT400-18 (ductile iron) |
| 12 | Spring washer | A276 304 |
| 13 | Handle nut | A276 304 |
Dimensions (mm)
| Size | Bore Ød | L | H | ØC |
|---|---|---|---|---|
| 1/2″ (DN15) | 15 | 55 | 95 | 70 |
| 3/4″ (DN20) | 20 | 60 | 97 | 70 |
| 1″ (DN25) | 25 | 68 | 114 | 80 |
| 1-1/4″ (DN32) | 32 | 76 | 134 | 80 |
| 1-1/2″ (DN40) | 40 | 80 | 154 | 100 |
| 2″ (DN50) | 48 | 93 | 168 | 100 |
Advantages & Benefits
- 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.
Application Fields & Locations
- Plumbing & utility mains: isolation points that stay fully open or closed for long runs.
- Water treatment & distribution: full-bore isolation with low pressure drop.
- Oil, gas & process lines: on/off isolation where a clear bore is required.
- Building services: riser and equipment isolation valves.
FAQ
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) thread. Tell us the size when you request a quote.
What is the operating temperature? -20 °C to +190 °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.
What is the minimum order? No minimum order quantity — we accept orders of any size, including small trial orders. For small orders, freight is arranged and paid by the buyer. Payment is by T/T — 30% on order confirmation, 70% before shipment.
Sample Policy
We are happy to provide product samples for customers to evaluate quality or conduct testing. The process typically begins with a quotation based on the customer’s specifications.
If the pricing is acceptable, we can offer samples either free of charge or at a cost depending on the product type and availability.
Shipping fees are borne by the customer.
Order Process
After confirming the product requirements and other details with the customer, we will issue a Sales Confirmation for approval. Once confirmed, the customer is required to pay a 30% deposit to proceed with production.
When mass production is completed and the goods pass inspection, the customer must pay the remaining 70% balance before shipment is arranged.
Related Products
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Other Industrial ValvesPneumatic Angle Seat Valve – 316 Stainless (CF8M), PN40, Steam On/Off, 1/2″–2″
FAQ
A. How can I request a quote?
Please provide a detailed inquiry sheet including product specifications, materials, quantities, and any special requirements. We will offer a quotation based on your request.
B. What are your quotation terms?
Our quotations are typically based on FOB terms. However, we can also offer CFR, CIF, or other Incoterms upon request.
C. What is your Minimum Order Quantity (MOQ)?
We have no MOQ. We operate on a made-to-order basis and accept orders of any size — trial orders are welcome. For smaller orders, freight is arranged and borne by the buyer.
D. What are your payment terms?
By T/T – 30% down payment upon order confirmation, and 70% balance before shipment.
E. What is your lead time?
Lead time depends on order quantity and specifications. We will confirm the exact schedule when you request a quote.
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